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  • 1960-1964  (1,684)
  • 1890-1899
  • 1960  (1,684)
  • Polymer and Materials Science  (1,160)
  • General Chemistry  (524)
Material
Years
  • 1960-1964  (1,684)
  • 1890-1899
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 137-140 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 137-137 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 144-144 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 176-179 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 156-162 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Anodic and cathodic polarisation phenomena with the inhibition of the acid corrosion of ironIt is shown that the inhibitors are primarily adsorbed or chemically fixed by the local anodes, and only later by the local cathodes. These phenomena are exclusively governed by the energy conditions on the metal surface, and not by the sign of the inhibitor particles. The adsorption takes place in two phases as it were. Good inhibitors show, apart from higher ohmic resistances, stronger anodic and cathodic polarisations. If the adsorption happens to take place, predominantly, at the local anode, the inhibiting effects and film resistances are lower. A high film resistance is always associated with a stronger cathodic polarisation. Poor inhibitors do not survive the first phase of adsorption to the local anodes. With good inhibitors, however, this phase is overcome very soon, and even with very low concentrations of approx. 0.01 gram per litre and over. The phenomena at the local anode are retarded by the blocking of the active centres whilst those at the local cathode are slowed down or arrested by a coherent layer of the inhibitor of higher ohmic resistance.
    Notes: Es wird gezeigt, daß die Inhibitoren primär an den Lokalanoden und dann erst an den Lokalkathoden adsorbiert oder chemisorbiert werden. Für diese Vorgänge sind nur die energetischen Verhältnisse an der Metalloberfläche, nicht aber der Ladungssinn der Inhibitionsteilchen maßgeblich. Die Adsorption geht gleichsam in zwei Stufen vor sich. Gute Inhibitoren zeigen neben höheren Ohmschen Widerstdänden auch stärkere anodische und kathodische Polarisationen. Erfolgt die Adsorption vorwiegend an der Lokalanode, dann treten nur niedrige Hemmungswirkungen und Filmwiderstände auf. Einem hohen Filmwiderstand entspricht stets auch eine stärkere kathodische Polarisation. Schlechte Inhibitoren kommen über das erste Stadium der Adsorption an den Lokalanoden nicht hinaus, bei guten wird dieses Stadium jedoch bald und bereits bei sehr niedrigen Konzentrationen von mehr als etwa 0,01 g/l überschritten. Die Vorgänge an der Lokalanode werden durch Blockierung der aktiven Zentren gehemmt, während jene an der Lokalkathode durch eine zusammenhängende Schicht des Inhibitors höheren Ohmschen Widerstandes verlangsamt oder zum Stillstand gebracht werden.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 192-197 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 228-229 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 237-238 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 255-255 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 256-256 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 11
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 12
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 263-264 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 13
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960) 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 14
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 265-269 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Aluminum use in refineries is increasingThe acceptance of aluminum in petroleum refinery construction is growing rapidly. Main reason for this development is the excellent resistance of aluminum to corrosion in situations frequently encountered in refinery practice. Other reasons for the metal's growing popularity are found in its low unit weight, low cost per unit volume and various secondary physical properties. A survey is provided of the corrosion behavior of aluminum in refinery processes and information is given on the composition and forms of aluminum alloys which are of primary importance in petroleum processing service. Comparative economics of aluminum and carbon steel are provided for some typical refinery applications and various successful areas for the use of aluminum-built process equipment are reported, from actual commercial practice.
    Notes: Der Verbrauch von Aluminium in Erdölraffinationsanlagen ist stark ansteigend. Einer der wichtigsten Gründe für diese Entwicklung ist die Korrosionsbeständigkeit des Aluminiums gerade unter den Bedingungen, die in der Praxis der Erdöraffination häufig auftreten. Als weitere Gründe für die zunehmende Verwendung sind das niedrige spezifische Gewicht, die niedrigen Kosten je Volumeneinheit und verschiendene physikalische Eigenschaften zu nennen. In einem Überblick werden die Korrosionseigenschaften des Aluminiums in Raffinationsprozessen beschrieben und die Zusammensetzungen und Formen derjenigen Aluminiumlegierungen angegeben, die für die Raffinationsprozesse am wichtigsten sind. Für einige typische Beispiele von Raffinationsanlagen sind die Kosten für die Ausführung in Stahl und in Aluminium zum Vergleich aufgestellt. Weiterhin wird unter dem Gesichtspunkt aktueller Geschäftspraxis von verschiedenen, erfolgreichen Anwendungsgebieten des Aluminiums im Bau von Raffinationisanlagen berichtet.
    Additional Material: 3 Ill.
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  • 15
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 298-305 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 16
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 318-322 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 17
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 28-33 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Corrosion phenomena in electrolytic condensers, and their causesA breakdown and failure of an electrolytic condenser with aluminium electrodes is mainly attributable to corrosion phenomena. These are initiated by the presence of certain cations and anions which may already be present in the raw materials, or may have entered the condenser during the manufacturing process. Compared with aluminium corrosion under normal conditions, the corrosion effect is increased by the prevailing potentials. Moreover, the formation of the 'filter layer' formed by the dielectric in the electrolytic condenser is liable to be disturbed by the slightest impurities in the electrolyte. These phenomena can be avoided by using tantalum anodes and a solid electrolyte.
    Notes: Für den Ausfall und das Versagen eines Elektrolytkondensators mit Aluminiumelektroden sind vorwiegend Korrosionserscheinungen verantwortlich. Sie werden durch die Anwesenheit bestimmter Kationen und Anionen eingeleitet. Diese können bereits in den Ausgangsmaterialien vorhanden sein oder während des Fertigungsprozesses in den Kondensator gelangen. Die Wirkungen werden gegenüber des Angriffs des Aluminiums unter normalen Bedingungen durch die herrschenden Spannungsverhältnisse vergrößert. Ferner wird die Ausbildung der Ventilschicht, die das Dielektrikum im Elektrolytkondensator darstellt, durch geringste Elektrolytverunreinigungen gestört. Die beschriebene Erscheinungen lassen sich durch Anwendung von Tantalanoden und eines festen Elektrolyten umgehen.
    Additional Material: 13 Ill.
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  • 18
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 48-52 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 19
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 57-60 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 20
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 124-126 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 21
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 22
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 527-528 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 23
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960) 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 24
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 529-547 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Progress and experience in the use of corrosion-resistant steelsThis report surveys the different categories of corrosion-resistant steels, taking into account the development during recent years, and experience in application, especially in respect of corrosion properties.First, some cases of corrosion damage encountered on low-Carbon chromium steels with 13 and 17 pC Cr are described where, according to previous knowledge of the properties of these steels, such damage was hardly to be expected and is therefore deserving of special interest.This is followed by a brief survey of the technological properties and corrosion behaviour of high-temperature resistant and age-hardening steels which have played a particularly important part in recent developments. Particulars are given concerning the influence of sustained temperature stresses on the proneness of heat-resistant austentitic steels to intercrystalline corrosion and tension crack corrosion.As far as austenitic Cr-Mn-Ni steels are concerned, particular attention is paid to low-temperature properties and to sensitivity to tension crack corrosion. These steels, originally developed during the war, are again attracting interest.In conclusion, some data are given concerning the suitability of electrodes with high nickel contents for the welding of ferritic and austenitic steel.
    Notes: In diesem Bericht wird ein Überblick über die einzelnen Gruppen der korrosionsbeständigen Stähle gegeben unter Berücksichtigung der Entwicklung der letzten Jahre und der Erfahrungen in der Anwendung, besonders im Hinblick auf die Korrosionseigenschaften.Zunächst wird auf einige Korrosionsschäden an niedriggekohlten 13- und 17%igen Cr-Stählen eingegangen, die nach den bisherigen Kenntnissen der Eigenschaften dieser Stähle nicht ohne weiteres zu erwarten waren und daher Interesse verdienen.In Bezug auf hochwarmfeste und aushärtbare Stähle, die in den letzten Jahren im Brennpunkt der Entwicklung standen, werden nach einer kurzen Übersicht die technologischen Eigenschaften und das Korrosionsverhalten erörtert. Über den Einfluß der Dauertemperaturbeanspruchung auf die Anfälligkeit der warmfesten austenitischen Stähle zu interkristalliner Korrosion und Spannungsrißkorrosion werden Angaben gemacht.Über austenitische Cr-Mn-Ni-Stähle wird vor allem im Hinblick auf Tieftemperatureigenschaften und der Empfindlichkeit gegenüber Spannungsrißkorrosion berichtet; diese in den Kriegsjahren entwickelten Stähle finden neuerdings wieder Beachtung.Abschließend werden noch Angaben gemacht über die Eignung von hochnickelhaltigen Elektroden zum Verschweißen von ferritischem mit austenitischem Stahl.
    Additional Material: 28 Ill.
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  • 25
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 571-574 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 26
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 27
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 396-396 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 28
    Electronic Resource
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 399-400 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 29
    Electronic Resource
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 461-463 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 30
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 488-488 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 31
    Electronic Resource
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 551-551 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: A new nickel alloy prevents corrosion by hot sulphuric acidsThe new alloy here described is the first material which has been found to be proof against corrosion by hot sulphuric acid within wide concentration ranges. The composition of this material, expressed in mean values, is a follows:Ni = 55%, Cr = 28%, Cu = 5,5%, Mn = 1,25%, Fe = 1,0% and C = 0,05%.Any variation in these percentage shares of the different alloy constituents will also affect the corrosion resistance of the alloy.The present report discusses the new alloys Illium G, Alloy 20 and Illium 98, their composition, and their resistance values which are tabulated.
    Notes: Die beschriebene neue Legierung ist das erste Material welches in weiten Konzentrationsbereichen gegen heiße Schwefelsäure beständig ist. Die Zusammensetzung dieses neuen Werkstoffes ist (Mittelwerte):Ni = 55%, Cr = 28%, Cu = 5,5%, Mn = 1,25%, Fe = 1,0% und C = 0,05%.Änderungen in diesen Anteilen der einzelnen Legierungskomponenten verändern auch gleichzeitig die Korrosionsbeständigkeit der Legierung.In dem Bericht werden die neuen Legierungen Illium G, Legierung 20 und Illium 98 besprochen, ihre Zusammensetzungen gegeben und die Beständigkeitswerte in einer Tabelle dargestellt.
    Additional Material: 2 Ill.
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  • 32
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 1-17 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: On the causes and progress of aggression due to the attack of corrosive waters on cement mortar and concrete (Second Communication)This Second Communication contains a report about the comparative evaluation and interpretation of long-time tests with concrete made with Portland cement and blast furnace cement, and about analytical investigations after storage in corrosive media. These investigations have proved the decisive importance of the chemical and mineralogical composition of the Portland cement and of the setting and hardening processes in the mortar bed. In view of the agreement between the results obtained on the strength of different bases, the knowledge gained from these investigations can be regarded as a contribution, of general validity, to the clarification of the causes and processes of the aggression of corrosive waters on cement mortar and concrete. As a result, it is possible to draw certain fundamental conclusions which have a bearing on cement theory and concrete technology.
    Notes: In der II. Mitteilung wird über die vergleichende Auswertung und Deutung von Langzeitversuchen mit Beton aus Portlandzement und Hochofenzement und von analytischen Untersuchungen bei Einlagerung in aggressive Medien berichtet, durch die es gelungen ist, die entscheidende Bedeutung der chemischen und mineralogischen Zusammensetzung des Portlandzementes und der Hydrations- und Erhärtungsvorgänge im Mörtelbett nachzuweisen. Im Hinblick auf die Übereinstimmung der Untersuchungsergebnisse der verschiedenen Auswertungsunterlagen sind die Erkenntnisse, die dadurch gewonnen werden konnten, ein allgemeingültiger Beitrag zur Aufklärung der Ursachen und des Verlaufs der Aggression bei Einwirkung angreifender Wässer auf Zementmörtel und Beton, aus dem sich grundlegende zementtheoretische und betontechnologische Schlußfolgerungen ergeben.
    Additional Material: 17 Ill.
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  • 33
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 40-42 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 34
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 46-48 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 35
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 65-68 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 36
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: The ferr oxyl tesAll solutions containing potassium ferricyanide and sodium chloride cause pitcorrosion on nickel coatings. With constant sodium chloride content, the corrosion attack is the stronger the higher the ferricyanide content, and the higher the temperature of the solution.With thin nickel coatings, the ferroxyl test provides so many blue spots that there is no longer any point in counting them. From 12 m̈ Ni onwards, mustard yellow spots are encountered which must be interpreted as products of the ferricyanidel nickel reaction. If exposed to the solution for a longer period, these spots become blue.The ferroxyl test is thus not suited for determining the porosity of Ni coatings. Its usefulness as a corrosion test is impaired by the fact that the test is difficult to reproduce. Even if the test conditions are laid down in great detail, the results obtained by different observers vary greatly.
    Notes: Sämtliche Kaliumferricyanid und Natriumchlorid enthaltende Lösungen greifen Nickelüberzüge lochfraßartig an. Bei gleichgehaltenem Gehalt an Natriumchlorid ist der Angriff umso stärker, je höher der Ferricyanidgehalt und je höber die Temperatur der Lösung ist.Bei dünnen Nickelüberzügen findet man durch die Ferroxylprüfung so zahlreiche blaue Flecken, daß die Auszählung nicht mehr sinnvoll ist. Ab 12 m̈ Ni treten senfgelbe Flecken auf, die als Produkt der Einwirkung des Ferricyanides auf Ni zu deuten sind. Bei längerer Einwirkung der Lösung verwandeln sie sich in blaue Flecken.Die Ferroxylprobe ist also zur Bestimmung der Porigkeit von Ni-Überzügen ungeeignet. Ihrer Anwendung als Korrosionsprobe steht die sehr schlechte Reproduzierbarkeit entgegen. Auch bei weitgehender Festlegung der Versuchsbedingungen weichen die Ergebnisse verschiedener Beobachter stark voneinander ab.
    Additional Material: 7 Ill.
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  • 37
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 191-192 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 38
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 203-205 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 39
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 216-219 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Additional Material: 12 Ill.
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  • 40
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 220-223 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Additional Material: 1 Ill.
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  • 41
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 238-241 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 42
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 255-255 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 43
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 44
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 329-330 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 45
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 46
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 335-336 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 47
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 348-351 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Kinetic relations between accelerated and natural atmospheric corrosionOn the strength of the kinetically determining combination of factors of atmospheric corrosion (over-critical humidity; SO2 content up to 0,01 per cent.), an accelerated corrosion test has been designed the results of which are quantitatively related to the progress of corrosion in natural atmospheres. This has been achieved by analysing the corrosion time curves of natural corrosion and accelerated corrosion of carbon steel (representing the ferrous metals) and zinc (representing the non-ferrous metals). This analysis shows that the curves have a comparable trend so that the corrosion values of the two metals are also comparable. This result has permitted the working out of a method for the calculation of the acceleration coefficients applicable to the short-time test, and the determination of these coefficients.
    Notes: Auf Grund der kinetisch bestimmenden Faktorenkombination der atmosphärischen Korrosion (überkritische Feuchtigkeit - SO2-Gehalt bis zu 0,1%) wurde eine beschleunigte Korrosionsprüfung entworfen, deren Ergebnisse quantitativ mit dem Korrosionsverlauf in natürlichen Atmosphären in Beziehung stehen. Dies wurde durch eine Analyse der Korrosion-Zeit-Kurven, welche bei Naturbedingungen und beschleunigter Korrosion an Kohlenstoffstahl (als Vertreter von Eisenmetallen) und Zink (als Vertreter von Nichteisenmetallen) festgelegt. Diese Analyse zeigte einen vergleichbaren, Verlauf dieser Kurven und daher auch vergleichbare Werte der Korrosion der beiden Metalle. Dieses Ergebnis ermöglichte eine Methode zur Berechnung der Beschleunigungskoeffizienten der Kurzprüfung zu entwerfen und die Koeffizienten zu bestimmen.
    Additional Material: 5 Ill.
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  • 48
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 337-347 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Corrosion studies on the steel tubes of a test evaporator in the sugar industryUp to now, corrosion at the evaporator tubes in the sugar industry has been largely attributed to the oxygen of the air dissolved in the juice. It is found, however, that corrosion on the juice side is mainly encountered in sugar factories working with dehardeners, especially if the parts concerned are on the downstream side of brass-tubed preheaters or evaporators.For the corrosion investigations, an experimental evaporator was built, and erected in a sugar factory. By means of the evaporator which handled about 10 % of the juice of the factory, tests were carried out during two campaigns. It was found that the intensity of corrosion was only slightly affected by the injection of greater quantities of oxygen.When, during the second campaign, the dissolution of iron was found to increase ten to twenty times, it was ascertained that this corrosion could no longer be ascribed to oxygen alone. It could be proved that, from a copperplated diffusing apparatus, copper was able to enter the evaporator together with the juice, leading to the formation of galvanic cells of deposited copper and iron. Corrosion with hydrogen development could be proved without doubt.
    Notes: Für die Verdampferrohrkorrosion in der Zuckerindustrie wurde bisher vorwiegend der im Saft gelöste Luftsauerstoff verantwortlich gemacht; saftseitige Korrosionen treten jedoch vorwiegend in Fabriken auf, die mit Enthärtungsanlagen arbeiten, insbesondere, wenn die angegriffenen Apparate hinter messingberohrten Vorwärmern oder Verdampfapparaten geschaltet waren.Für die Korrosionsuntersuchungen wurde ein Versuchsverdampfer gebaut, der in einer Zuckerfabrik aufgestellt wurde. Mit Hilfe des Verdampfers, der etwa 10% des Fabriksaftes verarbeitete, wurden in 2 Kampagnen verschiedene Versuche durchgeführt. Das Einblasen größerer Sauerstoffmengen in den Saft hatte dabei nur einen geringen Einfluß auf die Korrosion.Als in der 2. Kampagne die Eisenauflösung sich auf das 10- bis 20fache vergrößerte, stellte sich heraus, daß der Sauerstoff allein für diese Korrosion nicht mehr verantwortlich war. Es wurde nachgewiesen, daß aus einer verkupferten Diffusionsapparatur Kupfer mit dem Saft in den Verdampfer gelangte und dort zur Bildung galvanischer Elemente von abgeschiedenem Kupfer und Eisen führte. Eindeutig konnte eine Korrosion unter Wasserstoffentwicklung nachgewiesen werden.
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  • 49
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 381-383 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 50
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 396-396 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 51
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 400-400 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 52
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 410-416 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Corrosion of zinc in sodium chloride solutionsCorrosion tests have been carried out with 99.99 pC zinc in distilled water and in NaCl solutions with 30, 90 and 200 gram of NaCl per litre at 250°C. The quantity of corroded metal was determined polarographically after tests lasting 20, 40, 80, 160 and 320 minutes. In addition, the oxygen and carbon dioxide content of the different solutions was determined, and the potential of the corroding zinc specimens was measured.The tests had the following results:The corrosion rate of zinc increases, during the initial stage of the reaction, with the increase of the NaCl concentration in the solution.If the corrosion rate decreases in individual cases, this relationship can be expressed by the following empiric equation: \documentclass{article}\pagestyle{empty}\begin{document}$$ \frac{{dk}}{{dt}} = A \cdot t^{ -{\rm B}} $$\end{document} where B ranges from 0 to 1.The potential of the corroding test specimen decreases as the NaCl concentration increases.The potential of the corroding test specimen also decreases with the time.An examination of the test results on the strength of the Nernst-Tafel formula shows that the share of the hydrogen depolarisation is very small within the corrosion range investigated. By means of hypothetical polarisation curves, it was possible to explain the influence of the NaCl concentration on the corrosion rate.The increase of the zinc-corrosion rate in solutions with decreasing oxygen concentration indicates that the micro-elements in the system investigated work at current values below the critical oxygen current.
    Notes: Es wurden Korrosionsversuche mit Zinc 99,99 in destilliertem Wasser und in NaCl-Lösungen mit 30; 90; 200 NaCl g/l bei 25° C durchgeführt. Die Menge des korrodierten Metalls wurde polarographisch nach einer Versuchsdauer von 20, 40, 80, 160, 320 min. festgestellt. Außerdem wurde jeweils der Sauerstoff- und Kohlendoxyd-Gehalt der verschiedenen Lösungen bestimmt und das Potential der korrodierenden Zinkproben gemessen.Die durchgeführten Versuche ergaben:Die Korrosionsgeschwindigkeit des Zinks nimmt während des Anfangsstadiums der Reaktion mit zunehmender NaCl-Konzentration der Lösung zu.Nimmt die Korrosionsgeschwindigkeit in einzelnen Fällen mit der Zeit ab, so läßt sich diese Abhängigkeit durch folgende empirische Gleichung beschreiben \documentclass{article}\pagestyle{empty}\begin{document}$$ \frac{{dk}}{{dt}} = A \cdot t^{ -{\rm B}} ({\rm O} 〈 B 〈 1) $$\end{document}Das Potential der korrodierenden Versuchsprobe nimmt mit zunehmender NaCl-Konzentration und Versuchsdauer ab.Die Überprüfung der Versuchsergebnisse nach der Formel von Nernst und Tafel weist aus, daß der Anteil der Wasserstoffdepolarisation im untersuchten Korrosionsbereich nur gering ist. Hypothetische Polarisationskurven ließen den Einfluß der NaCl-Konzentration auf die Korrosionsgeschwindigkeit erklären.Das Ansteigen der Zink-Korrosions-Geschwindigkeit in Lösungen mit abnehmender Sauerstoffkonzentration deutet an, daß die Mikroelemente in dem untersuchten System, bei Stromstärken, die unter der Sauerstoffgrenzstromstärke liegen, arbeiten.
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 446-448 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 54
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 458-458 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 458-458 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 464-464 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 58
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 481-487 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: The electrolytic deposition of iron-chromium-nickel alloysIron-chromium-nickel alloys of a composition corresponding to 18/8 chromium nickel steel can be deposited from the aqueous solutions of the sulphates of the three metals in the presence of urea and boric acid. By means of an appropriate choice of the concentrations of the components of the bath, of the pH value and of the temperature, it is possible to bring the deposit potentials of the three individual metals as well as of the alloy to virtually the same value of EH = -0.68 V. The composition of the alloy is influenced by changes in the concentration of the bath constitutents, this influence being greatest for iron, less great for nickel, and smallest for chromium.Current yield and composition of the alloy are governed by a diaphragm forming on the cathode surface and consisting of chromium hydroxide. The three metals impede each other considerably in the deposition of the alloy.
    Notes: Eisen-Chrom-Nickel-Legierungen, deren Zusammensetzung dem 18/8-Chrom-Nikkel-Stahl entspricht, können aus den wäßrigen Lösungen der Sulfate der drei Metalle in Gegenwart von Harnstoff und Borsäure abgeschieden werden. Durch geeignete Wahl der Konzentration der Bestandteile, des pH-Wertes und der Temperatur können die Abscheidungspotentiale sowohl der drei Einzelmetalle als auch der Legierung auf praktisch den gleichen Wert von EH = -0,68 V gebracht werden. Die Zusammensetzung der Legierung wird durch Veränderung der Konzentrationen der Bestandteile beeinflußt, wobei dieser Einfluß am größten für Eisen, geringerer für Nickel und am kleinstem für Chrom ist.Für die Stromausbeuten und die Zusammensetzung der Legierung ist ein aus Chromhydroxyd bestehendes, sich auf der Kathodenoberfläche ausbildendes Diaphragma entscheidend. Die drei Metalle behindern sich beträchtlich gegenseitig bei der Abscheidung der Legierung.
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 497-506 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 518-523 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 526-527 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. XXX 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 552-554 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Investigation of electrocapillary curvesElectrocapillary curves for a system Hg-1N aqueous solution of H2SO4 with small amounts of sulphoxides, amines, thiourea and diphenylthiourea have been investigated. The electrocapillary results which well agree with inhibition efficacy of such compounds indicate that neutral molecules are responsible in inhibition processes.
    Notes: Aufgenommen wurden Elektrokapillarkurven für das System Hg/1 n-H2SO4 mit Zusatz von verschiedenen Sulfoxyden, Aminen, Thioharnstoff und Diphenylthioharnstoff. Zwischen den hierbei erhaltenen Resultaten und denen bezüglich der Sparbeizwirkung von neutralen Molekülen bei diesem Adsorptionsprozeß wurde eine gute Übereinstimmung gefunden.
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 570-570 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 592-592 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 592-592 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 68
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 622-626 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Determining the condition diagram of the metal/electrolyte systemIn this paper, the corrosion reaction is examined on the strength of theoretical results which are experimentally accessible. The corrosion rate was represented by the differential equaiton \documentclass{article}\pagestyle{empty}\begin{document}$$ dv = \left( {\frac{{I \cdot v}}{{I \cdot c}}} \right)_{t,T} + \left( {\frac{{I \cdot v}}{{I \cdot t}}} \right)_{c,T} dt $$\end{document} where t is the duration of the test, c the concentration of the corrosive substance, and T the temperature. This equation has two characteristic terms: \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{c} \left( {\frac{{Iv}}{{Ic}}} \right)and\left( {\frac{{Iv}}{{It}}} \right).\,\,{\rm The\,\,equation} \\ v = Kc^n t^n\,e^{ - kct} \end{array} $$\end{document} can be used for the linear, hyperbolic and exponential corrosion rate v = f(c) or v = f1(t).
    Notes: In diesen Beitrag wird die Korrosionsreaktion auf Grund theoretischer und experimentell zugänglicher Ergebnisse verfolgt. Die Korrosionsgeschwindigkeit v wurde durch die Differentialgleichung \documentclass{article}\pagestyle{empty}\begin{document}$$ dv = \left( {\frac{{I \cdot v}}{{I \cdot c}}} \right)_{t,T} + \left( {\frac{{I \cdot v}}{{I \cdot t}}} \right)_{c,T} dt $$\end{document} dargestellt, wobei t die Versuchsdauer, c die Konzentration des aggressiven Stoffes und T die Temperatur bedeuten. Diese Gleichung besitzt zwei charakteristische \documentclass{article}\pagestyle{empty}\begin{document}$$\begin{array}{c} Glieder{\rm }\left( {\frac{{Iv}}{{Ic}}} \right)und\left( {\frac{{Iv}}{{It}}} \right).\,{\rm Die\,\,Gleichung} \\ v = Kc^n t^n\,e^{ - kct} \\ \end{array}$$\end{document} Kann man für die lineare, hyperbolische und exponentielle Korrosionsreaktion v = f (c) bzw. v = f1(t) verwenden.
    Additional Material: 7 Ill.
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  • 69
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 658-660 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 70
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 664-664 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 71
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 672-672 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 72
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Distribution of potential and current with cathodic corrosion protectionThe distribution of the potential and of the current in local cells and with cathodic corrosion protection can be calculated from the differential equation for the electric field in an electrolyte solution. The relevant limit conditions are formulated in a general way. In the case of sacrificial anodes and external current, solutions for simple limit conditions are put forward, and the general conclusions are discussed. Where it is necessary to protect major objects, it appears desirable to use external current which is automatically regulated in such a way that the local electrode potential, measured by a probe at the most exposed point, is equal to the potential of a just about negligible metal dissolution, but not much more negative, so that cathodic hydrogen development is minimized, especially at points situated next to the anode.
    Notes: Potentialverteilung und Stromverteilung in Lokalelementen und bei kathodischem Korrosionsschutz lassen sich aus der Differentialgleichung für das elektrische Feld in einer Elektrolytlösung berechnen. Die zugehörigen Grenzbedingungen werden in allgemeiner Form aufgestellt. Für Schutz mit Opferanoden und mit Fremdstrom werden Lösungen für einfache Grenzfälle mitgeteilt und die praktischen Schlußfolgerungen besprochen. Falls größere Objekte zu schützen sind, erscheint es empfehlenswert, Fremdstrom zu verwenden, dessen Stärke automatisch derart geregelt wird, daß das mit einer Sonde an der am meisten gefährdeten Stelle gemessene örtliche Elektrodenpotential gleich dem Potential gerade noch vernachlässigbarer Metallauflösung ist, jedoch nicht wesentlich negativer, um kathodische Wasserstoffentwicklung auf einem Minimum zu halten, insbesondere an Stellen, die nächst der Anode gelegen sind.
    Additional Material: 10 Ill.
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  • 73
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 710-712 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 74
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 701-707 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Investigations on structure and other properties of hard oxide layers produced upon aluminium by anodic oxidationAfter a short survey of the formation mechanism of oxide layers growing upon aluminium during anodic oxidation the report presents experimental results obtained in investigating the growth of hard oxide layers in dilute sulfuric acid. Particular reference is made to the initial period of anodization and to changes in surface roughness measured during surface refining. Additional data cover results of thickness measurements on barrier layers and total layers, as well as oxide structure and chemical composition of the oxide layers. According to these findings the formation mechanisms, the structure and the chemical composition of layers produced by hard-anodizing exhibit the same regularities and basic structure as normal eloxal-layers.
    Notes: In diesem Bericht werden nach einem kurzen Überblick über die Entstehung der durch anodische Oxydation auf der Aluminiumoberfläche sich bildenden Oxydschichten die Untersuchungsergebnisse geschildert, die bei dem Wachstum der in verdünnter Schwefelsäure hergestellten Hartoxydschichten erzielt wurden. Näher beschrieben und gekennzeichnet werden die Anfangsperiode der Anodisierung und die bei der Oberflächenveredelung gemessene Veränderung der Oberflächenunebenheiten. Weiter werden die Ergebnisse von Sperr- und Gesamtschichtdickemessungen sowie die Resultate der Untersuchungen der Oxydstruktur und der chemischen Zusammensetzung der Oxydschichten mitgeteilt. Hiernach zeigen der Bildungsmechanismus, die Struktur und chemische Zusammensetzung der durch Hartoxydation erzeugten Schichten dieselben Regelmäßigkeiten und denselben prinzipiellen Aufbau wie die normalen Eloxalschichten.
    Additional Material: 9 Ill.
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  • 75
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 730-732 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Additional Material: 2 Ill.
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  • 76
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 736-736 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 77
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 744-749 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Influence of surface layers on the sensitivity to stress corrosion of austenitic and high-tensile steelsWith steel alloys, tension crack corrosion is one of the most unpleasant corrosion phenomena. In the case of austenitic chrome nickel steels, this type of corrosion is generally caused by solutions containing halides. The sensitivity of austenitic steels depends on their alloy composition. In general, steels, containing ferrite are less sensitive, as the ferrite is attacked first so that the austenite is cathodically protected. The phenomena encountered in the microrange can also be transferred to the macrorange, in as much as the austenitic materials is connected with a more electronegative metal. For instance, the chromium-plating of austenitic structural members gives rise to a ferritic surface zone rich in chromium which, in certain electrolytes, acts as an anode in respect of the parent material and provides a cathodic protection for the austenite. Tension crack corrosion of high-tensile ferritic steels in acid solutions containing hydrogen sulphide can be ascribed to the penetration, into the steel, of the atomic hydrogen thus formed. The crack sensitivity can be reduced by an anodic current load, as the development of hydrogen will then take place at the cathode. It was found that lead coating is a suitable cathode.
    Notes: Die Spannungsrißkorrosion bei Stahllegierungen ist eine der unangenehmsten Korrosionserscheinungen. Bei den austenitischen Chrom-Nickel-Stählen führen meist halogenhaltige Lösungen zur Auslösung dieser Korrosionsart. Die Empfindlichkeit der austenitischen Stähle ist abhängig von ihrer Legierungszusammensetzung. Im Allgemeinen sind ferrithaltige Stähle unempfindlicher, da der Ferrit bevorzugt angegriffen und damit der Austenit kathodisch geschützt wird. Die Vorgänge im Mikrobereich können auch auf den Makrobereich übertragen werden, indem der austenitische Werkstoff mit einem unedleren Metall leitend verbunden wird. Durch eine Inkromierung austenitischer Bauteile entsteht z. B. auf der Oberfläche eine chromreiche ferritische Zone, die in bestimmten Elektrolyten gegenüber dem Grundwerkstoff anodisch ist und den Austenit kathodisch Schützt.Die Spannungsrißkorrosion hochfester ferritischer Stähle in schwefelwasserstoffhaltigen sauren Lösungen ist auf das Eindringen des sich bildenden atomaren Wasserstoffs in den Stahl zurückzuführen. Durch eine anodische Strombelastung kann die Bruchempfindlichkeit vermindert werden, da die Wasserstoffentwicklung an der Kathode erzwungen wird. Als eine geeignete Methode hat sich die Verbleiung erwiesen.
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 773-775 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 785-789 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 80
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 799-799 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 82
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 804-804 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 83
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960) 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 84
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 22-27 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: The systematology of the corrosion of metals in soil (II).-LeadThe second part of the investigation on the systematology of the corrosion of metals in soil is devoted to the behaviour of lead and lead cables. Again, the corrosion phenomena taking place on the surface of the metal are of an electrochemical nature. The distribution of the anodic and cathodic zones on the lead surface depends on the size of the soil particles, on the water saturation condition of the soil, on the pH value of the soil, and on the duration of the test.With the field tests, the dissolution rate of lead with 1 pC Sb and commercial lead has been clearly found dependent on the average annual rainfalls and on the pH value of the soil.The corrosion-chemical behaviour of the lead cable sheathing in soil is governed by stress corrosion. An initial localisation of the corrosion phenomena is accompanied by plastic deformations which then cause electro-chemical reactions.
    Notes: Der zweite Teil der Untersuchung der Systematik der Korrosion der Metalle im Erdreich ist dem Verhalten des Bleis und des Bleikabels gewidmet. Die Korrosionserscheinungen, die an der Bleioberfläche ablaufen, sind wiederum elektrochemischer Natur. Die Verteilung der anodischen und kathodischen Bezirke auf der Bleioberfläche ist abhängig von der Größe der Bodenteilchen, vom Sättigungszustand des Bodens an Wasser, vom pH-Wert des Bodens und von der Versuchsdauer.Bei Naturversuchen zeigt die Auflösungsgeschwindigkeit vom Blei mit 1% Sb und von Handelsblei eine deutliche Abhängigkeit von der durchschnittlichen jährlichen Regenmenge und vom pH-Wert des Bodens.Für das korrosionschemische Verhalten des Bleikabelmantels im Erdreich ist die Spannungskorrosion ausschlaggebend. Es resultiert zuerst die Lokalisierung des Korrosionsvorgangs mit plastischen Verformungsvorgängen, die dann von elektrochemischen Reaktionen begleitet sind.
    Additional Material: 12 Ill.
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 33-39 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Zinc corrosion caused by modern detergentsAn investigation has been carried out on the influence of soap and synthetic detergents on the corrosion of zinc, with special regard to the hardening constituent of the water. A description is given of a laboratory testing method which permits the determination of the corrosive effect of numerous detergent components and built-up detergents. Various substances are tested for their inhibiting effect in a standard syndet in hard and soft water, and the influence of repeated effects of fresh liquids on zinc is evaluated and discussed. With detergents of normal composition, polymer phosphates show the greatest intensity of corrosion which is merely (and clearly) exceeded by the effect of the combination of these phosphates with bleaching agents (sodium perborate). A working theory for the action of such combined corrosion is discussed.
    Notes: Der Einfluß von Seifenwaschmitteln und Syndets auf die Korrosion von Zink wird unter besonderer Berücksichtigung der Härtebildner des Wassers untersucht. Eine Laboratoriumstestmethode wird mitgeteilt, mit welcher die korrodierende Wirkung zahlreicher Waschmittelkomponenten und damit aufgebauter Waschmittel ermittelt wurde. Verschiedene Substanzen werden auf ihre inhibierende Wirkung in einem standardisierten Syndet in harten und weichem Wasser geprüft und der Einfluß von mehrfachen Einwirkungen frischer Flotten auf Zink eruiert und diskutiert. In den Waschmitteln üblicher Zusammensetzung zeigen die polymeren Phosphate die stärkste Korrosion, die nur durch die Kombination dieser mit Bleichmitteln (Natriumperborat) deutlich übertroffen wird. Eine Möglichkeit des Wirkungsmechanismus dieser kombinierten Korrosion wird diskutiert.
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 53-56 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 69-75 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 76-76 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 80-80 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 93-101 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: On the causes and progress of aggression due to the attack of corrosive waters on cement mortar and concrete (Second Communication)This Second Communication contains a report about the comparative evaluation and interpretation of long-time tests with concrete made with Portland cement and blast furnace cement, and about analytical investigations after storage in corrosive media. These investigations have proved the decisive importance of the chemical and mineralogical composition of the Portland cement and of the setting and hardening processes in the mortar bed. In view of the agreement between the results obtained on the strength of different bases, the knowledge gained from these investigations can be regarded as a contribution, of general validity, to the clarification of the causes and processes of the aggression of corrosive waters on cement mortar and concrete. As a result, it is possible to draw certain fundamental conclusions which have a bearing on cement theory and concrete technology.
    Notes: In der II. Mitteilung wird über die vergleichende Auswertung und Deutung von Langzeitversuchen mit Beton aus Portlandzement und Hochofenzement und von analytischen Untersuchungen bei Einlagerung in aggressive Medien berichtet, durch die es gelungen ist, die entscheidende Bedeutung der chemischen und mineralogischen Zusammensetzung des Portlandzementes und der Hydratations- und Erhärtungsvorgänge im Mörtelbett nachzuweisen. Im Hinblick auf die Übereinstimmung der Untersuchungsergebnisse der verschiedenen Auswertungsunterlagen sind die Erkenntnisse, die dadurch gewonnen werden konnten, ein allgemeingültiger Beitrag zur Aufklärung der Ursachen und des Verlaufs der Aggression bei Einwirkung angreifender Wässer auf Zementmörtel und Beton, aus dem sich grundlegende zementtheoretische und betontechnologische Schlußfolgerungen ergeben.
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 119-123 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 140-143 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960) 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 152-155 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Anodic passivation of titaniumThe excellent corrosion resistance of titanium results from the presence of a protective film of oxide at the metal surface. The oxide fim is stable in oxidising solutions but not in acids that do not contain readily available oxygen.The general corrosion behaviour of titanium is also interpreted by reference to a Pourbaix diagram in which potential is plotted against hydrogen ion concentration. This indicates regions of stability for titanium dioxide.Experimental evidence is then produced to show that by raising the electrical potential of the metal, titanium can be made to resist corrosion in non-oxidising acids. The experimental method used, employing a potentiostat, is described and the polarisation graph for titanium immersed in 40% sulphuric acid at 60°C is shown.The extent to which titanium can be protected by anodic passivation in sulphuric acid over a range of acid strengths and temperatures is shown.Finally, the practical application of anodic passivation is illustrated by employment of a welded titanium tank, pipe-line and pump, which has been employed to circulate hot strong sulphuric acid, without any evidence of corrosion. Complete protection was achieved by impressing a D. C. current at 2.3 volts between the tank as anode and an insulated tantalum cathode. Current consumption was only three watts per M2.
    Notes: Die ausgezeichnete Korrosionsbeständigkeit des Titans beruht auf der Ausbildung eines schützenden Oxydfulmes, der zwar in oxydierenden Medien, nicht aber in Säuren beständig ist, die nur schwach oder nichtoxydierend wirken.Die allgemeinen Korrosionseigenschatten des Titans werden an einem Pourbaix-Diagramm erläutert, in welchem das Potential gegen die Wasserstoffionenkonzentration aufgetragen ist. Es zeigt die Stabilitätsbereiche des Titandioxyds.Durch Anheben des elektrochemischen Potentials wird der Beweis geführt, daß Titan auch in nichtoxydierenden Säuren korrosionsfest gemacht werden kann. Hierzu werden sowohl die Untersuchungsmethode und der für die Versuche benutzte Potentiostat beschrieben als auch die Polarisationskurve des Titans in 40%-Schwefelsäure bei 60°C angegeben.Weiterhin wird die Wirksamkeit des anodischen Schutzes auf Titan in Schwefelsäure in Abhängigkeit von Konzentration und Temperatur mitgeteilt.Schließlich wird an einem geschweißten Titanbehälter, einer Rohrleitung und an einer Pumpe, welche heiße konzentrierte Schwefelsäure ohne irgendwelche Anzeichen einer beginnenden Korrosion umwälzt, die praktische Anwendung der anodischen Passivierung des Titans vorgeführt. Ein vollständiger Schutz wurde durch Anlegen einer Gleichspannung von 2,3 V zwischen dem Tank als Anode und einer Tantalkathode erreicht. Der Stromverbrauch betrug nur 3 Watt/m2.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 96
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 189-191 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 97
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 197-202 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 98
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 205-208 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 99
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 208-208 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 100
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 11 (1960), S. 212-216 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Stress corrosion and type of grain boundaryThe close study of the structure of grain boundaries is nowadays also extended to the mechanism of intracrystallinic corrosion, the subject of a recent article by the author in this journal, and to “stress corrosion and type of grain boundary (fine angle, small angle and large angle grain boundaries)”, which is the subject of the contribution concerning the alloy Al Mg.An Al Mg alloy made corrosion-chemically sensitive through previous heat treatment has been examined in respect of its stress corrosion behaviour in order to ascertain which of the types of grain as well as with intermittent charge, the observations showed, under certain test conditions, an intermediate level where the corresponding resting references cell tension was determined by means of intermittent charge, and which was identified, from a comparison with known formation affinities, with the formation of a basic lead sulphate in accordance with the electrode reaction \documentclass{article}\pagestyle{empty}\begin{document}$$ _I Pb^{ + 2} + _{II} PbSO_4 + _{IV} H_2 O \to _{III} PbO \cdot PbSO_4 + 2_{IV} H^ + $$\end{document}
    Notes: Das nähere Studium des Aufbaues von Korngrenzen erstreckt sich heute auch auf den Mechanismus der interkristallinen Korrosion, über die vom Autor kürzlich in dieser Zeitschrift berichtet wurde, sowie der „Spannungskorrosion und Korngrenzenart (Fein-, Klein- Groß- winkelkorngrenzen)“, über die im Beitrag für die Legierung AlMg berichtet wird.Eine korrosionschemisch durch die thermische Vorbehandlung empfindlich gemachte AlMg-Legierung wird auf ihr Spannungskorrosionsverhalten dahingehend untersucht, welche der Korngrenzenarten korrosionsempfindlich ist. Sowohl bei durchgehender als auch bei intermittierter Belastung zeigte sich unter bestimmten Versuchsbedingungen ein Zwischenninveau, dessen zugehörige Ruhe-Bezugesspannung durch intermittierte Belastung bestimmt und durch Vergleich mit bekannten Bildungsaffinitäten der Bildung eines basischen Bleisulfats nach der Elektrodenreaktion \documentclass{article}\pagestyle{empty}\begin{document}$$ _I Pb^{ + 2} + _{II} PbSO_4 + _{IV} H_2 O \to _{III} PbO \cdot PbSO_4 + 2_{IV} H^ + $$\end{document} zugeordnet wurde.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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