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  • Electronic Resource  (18,948)
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  • 201
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 278-278 
    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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  • 202
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954) 
    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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  • 203
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 395-398 
    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 Corrosion of Metals and Metallic Coatings in Tropical and Sub-tropicalExtremely high temperatures and humidities can be encountered in a tropical climate, which naturally can be the cause of extensive corrosion. The great difference between maximum day temperature and minimum night temperatures are particularly dangerous in this respect, since they lead to corrosion as a result of sweating, due to condensation of water vapour. This can even occur under conditions which otherwise would not normally favour corrosion. Corrosion through sweating can also occur inside the package or container during transport and storage. The action is greatly accelerated by the presence of minute quantities of chlorides, mostly deposited by atomised sea water. A case under investigation proved that corrosive action is also accelerated in desert locations, far removed from the sea, by particles of sand containing salt, which are blown into the package or container by the action of wind. The article concludes with a summary of the behaviour of various metals and metallic coatings in tropical and sub-tropical climates.
    Notes: Im tropischen Klima können oft extrem hohe Temperaturen und Feuchtigkeitsgehalte auftreten, die naturgemäß zu besonders starken Korrosionen führen können. Besonders gefährlich sind die starken Temperaturschwankungen zwischen der Tageshöchsttemperatur und den niedrigsten Temperaturen bei Nacht, die durch Kondensation von Wasserdampf zu starken Schwitzkorrosionen selbst unter sonst nicht besonders stark aggressiven Bedingungen führen, Schwitzkorrosionen können bereits beim Transport innerhalb der Verpackung und bei Lagerung auftreten. Sie werden durch geringe Chloridmengen, meist aus zerstäubtem Seewasser stammend, stark beschleunigt. An einem näher untersuchten Beispiel wird gezeigt, daß der Angriff auch in den Wüstengegenden, weitab vom Meere, durch vom Winde aufgewirbelten salzhaltigen Sand erheblich beschleunigt werden kann. Abschließend wird eine Übersicht über das Verhalten verschiedener Metalle und Metallüberzüge im tropischen und subtropischen Klima gegeben.
    Type of Medium: Electronic Resource
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  • 204
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 410-411 
    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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  • 205
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    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 420-422 
    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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  • 206
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954) 
    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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  • 207
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 454-454 
    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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  • 208
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    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 38-38 
    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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  • 209
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 64-67 
    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.
    Type of Medium: Electronic Resource
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  • 210
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 74-75 
    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
    Type of Medium: Electronic Resource
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  • 211
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 118-118 
    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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  • 212
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 38-38 
    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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  • 213
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    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. I 
    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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  • 214
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    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 11-17 
    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 Passivity of Thallium in Perchloric Acid, Sodium Chloride and Sodium Sulphide SolutionsWhilst only a single rapid drop in potential could be observed in the case of solutions of perchloric acid and sodium sulphate, two successive drops in current potential were observed with electrolytes containing chlorine ions. This proves that two different phases occur in passivity. The Muller-Machu Time Law of Covering Passivity was found to hold good for both drops in potential, which points to a mechanical passivity of Thallium caused by covering layers.Measurements of the current potential showed that the anodic behavior of Thallium is characterised by two values, Tl+ and Tl3+. It was found that, in all the electrolytes examined, the Thallium is the first to be converted to Tl+ in solution. This action is independent of current potential. This action may have a duration of only a few seconds (e.g., in the case of 0,48 n HClO4) or several minutes (as in the case of solutions containing chlorine ions). The duration of this action depends on the current potential and the particular electrolyte used. During the primary phase of the passivating action the passivating surface layer also consists of a Thallium-1-compound. The continued passage of current causes a transformation of the metal at the passive anode, which then once again dissolves to the accompaniment of an emission of Tl3+ -Ions. At this stage a second mechanical passivation by a covering layer of a Thallium-III-salt occurs. It therefore follows that all types of passivity only depend upon the formation of covering layers.
    Notes: Während in Perchlorsäurelösungen und Natriumsulfatlösungen nur ein einziger schneller Abfall der Stromstärke beobachtet werden konnte, wurden in den Chlorionen enthaltenden Elektrolyten zwei aufeinander folgende Stromstärkeabfälle festgestellt. Dies beweist, daß zwei verschiedene Stadien der Passivität auftreten. Das Zeitgesetz der Bedeckungspassivität von Müller-Machu wurde für beide Stromstärkeabfälle als streng gültig gefunden, was auf eine mechanische Passivität des Thalliums durch Deckschichten hinweist.Durch Potentialmessungen konnte gezeigt werden, daß das anodische Verhalten des Thalliums durch sein Auftreten in zwei Wertigkeitsstifen, nämlich Tl+ und Tl3+ gekennzeichnet ist. In allen untersuchten Elektrolyten geht das Thallium zunächst und unabhängig von der angewandten Stromdichte als Tl+ in Lösung. Dieser Vorgang kann, je nach der angewandten Stromdichte und dem benutzten Elektrolyten, nur einige Sekunden (z. B. in 0,48 n HClO4) oder bis mehrere Minuten (in Chlorionen enthaltenden Lösungen) dauern. Auch die passivierende Deckschicht besteht in der ersten Stufe des Passivierungsvorganges aus einer Thallium-I-Verbindung. Bei weiterem Stromdurchgang tritt an der passiven Anode eine Umwandlung des Metalles ein, wobei es nunmehr wieder unter Aussendung von Tl3+-Ionen in Lösung geht. In dieser Verbindungsform erfolgt dann eine zweite mechanische Passivierung durch eine Deckschicht, die aus einem Thallium-III-salz besteht.Es beruhen somit alle Arten von Passivität nur auf der Ausbildung von Deckschichten.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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  • 215
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    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 29-30 
    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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  • 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
    Type of Medium: Electronic Resource
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  • 217
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    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 39-39 
    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
    Type of Medium: Electronic Resource
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  • 218
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954) 
    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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  • 219
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 49-54 
    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 Anodic Behaviour of Aluminium and Al—Mg Alloys in Sulphuric Acid and Sodium Sulphate SolutionsAttempts were made to remove the film of oxide from aluminium and Al— Mg alloys, so that a pure aluminium surface could be obtained. Dilute sulphuric Acid and Sodium sulphate solutions of various concentrations were used as electrolytes. Only one cathodic polarisation had a slight effect on the loosening of the oxide film. However, a very rapid passivation always followed this activation (caused by the chemical action of the aqueous solutions). Hydrochloric acid and NaOH solutions in high concentrations did dissolve the oxide film, but did not permit of any anodic passivation in these solutions. It was possible to obtain activation in sulphuric acid containing chlorine ions, but, even in this solution passivation commenced as soon as the current was switched off. This passivation was caused by the chemical action of the electrolytes the porosity of the natural oxide film was reduced to 10-5 sq. cm./sq. cm. by activation, and a maximum value of 10-2 sq. cm./sq. cm. was obtained. As a result of the strong chemical affinity of aluminium, it is only possible to obtain a clean metallic surface for fractions of seconds.
    Notes: Es wurde versucht, den Oxydfilm von Aluminium und Al—Mg—Legierungen zu entferne, um reine Aluminiumoberflächen zu erhalten. Hierbei wurden verdünnte Schwefelsäure und Natriumsulfatlösungen verschiedener Konzentration als Elektrolyte benützt. Nur eine kathodische Polarisation hatte einen geringen, die natürliche Oxydschicht auflockernden aktivierenden Einfluß. Nach der Aktivierung trat jedoch immer wieder eine sehr schnelle Passivierung nur durch chemische Einwirkung der wäßrigen Lösung wieder ein. Salzsäuren und NaOH—Lösungen stärkerer Konzentration lösten wohl die Oxydschichten auf, gestatteten aber keine anodische Passivierung in diesen Lösungen. Eine Aktivierung konnte wohl in einer chlorionenhaltigen Schwefelsäure erzielt werden, aber auch in dieser Lösung trat augenblicklich nach Abschaltung des Stromes wieder Passivierung durch chemische Einwirkung des Elektrolyten ein. Die Porosität der natürlichen Oxydschicht wurde zu 10-4 bis 10-5 cm2/cm2 ermittelt, die maximal auf 10-2 cm2/cm2 durch Aktivierung gebracht werden konnte. Auf Grund der starken chemischen Affinität des Aluminiums ist die Erzielung einer freien, unbedeckten Metalloberfläche nur für Bruchteile von Sekunden möglich.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 220
    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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  • 221
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 138-139 
    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: 4 Ill.
    Type of Medium: Electronic Resource
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  • 222
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 151-155 
    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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  • 223
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 177-178 
    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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  • 224
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 184-192 
    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
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 225
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 196-196 
    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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  • 226
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 198-200 
    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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  • 227
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954) 
    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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  • 228
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 224-230 
    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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  • 229
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 233-234 
    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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  • 230
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 237-237 
    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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  • 231
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 237-237 
    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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  • 232
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 241-243 
    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 Building-up of the Double Layer on Iron and Lead Electrodes in SoilsThe building-up of the double layer on Iron and Lead electrodes was followed by means of the Hickling method. The results obtained from the present series of experiments were in agreement with results obtained from previous experiments on the corrosion of Iron and Lead when buried in soils. This applied particularly to the type of corrosion obtained when the water content of the soil was below the saturation point. Only the first part of the Helmholtz double layer was formed on an Iron elctrode buried in a sandy soil of low water content. When the saturation point was exceeded, the building-up took place in exactly the same manner as in distilled water. A Lead elctrode buried in a clay soil was found to have a double layer similar to that obtained when the electode is immersed in electrolytes. In this case the capacity of the differents parts of the double layer is greater than that of the Helmholtz double layer.
    Notes: Der Aufbau der Doppelschicht an der Fe- und Pb-Elektrode wurde mit Hilfe der Hicklingschen Methode verfolgt. Im Einklang mit den Ergebnissen, die bei früheren Korrosionsversuchen mit Eisen und Blei im Erdreich erhalten wurden, ergab sich bei den Untersuchungen, die völlige übereinstimmung bezüglich der Entstehung der Korrosionstype, wenn sich der Boden hinsichtlich seines Wassergehaltes unter seiner Sättigungsgrenze befindet. Auf einer Fe-Elektrode bildet sich in sandhaltigem Boden bei niedrigen Wassergehalten nur der erste Teil der Helmholtz-Doppelschicht aus, nach Überschreiten der Sättigungsgrenze weist diese die gleiche Ausbildung auf wie in destilliertem Wasser. Eine Pb-Elektrode weist dagegen in tonhaltigem Boden eine Doppelschicht auf, die der ähnelt, die sich in einem Elektrolyt ausbildet. In diesem Fall ist die Kapazität des diffusen Teils der Doppelschicht größer als die der Helmholtz-Doppelschicht.
    Additional Material: 12 Ill.
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  • 233
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 264-266 
    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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  • 234
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 182-184 
    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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  • 235
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    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 192-194 
    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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  • 236
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 237-237 
    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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  • 237
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 392-395 
    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: Determination of the corrosion of Ceramic Products during Operation by means of Temperature-indicating ColoursThe outer temperatures of furnaces bear a constant relation to the operating temperature. The degree of temperature depends only upon the construction of the oven and the fire-resistant materials used. The destruction of the furnace brickwork during operation results in a reduction in the thickness of the bricks used and in the destruction of the bounds by cracks. The consequent local increases in temperature of the outer wall can, in both cases, be determined by the use of Thermocolours and Thermochrom sticks, and will thus serve as a timely warning of the possibility of damage. The colour changes show, by means of the isotherm, the extent of any damage. The colour changes show, by means of the isotherm, the extent of any damage that may already have occurred. Since any existing damage is detected in its early stages, any necessary repairs and possible shutdowns can be prevented.The article closes with a few examples from actual practice illustrative of the timely determination of corrosion of ceramic materials and products.
    Notes: Die Außentemperatur von Öfen steht im konstanten Zusammenhang mit der Betriebstemperatur, sie ist in ihrer Höhe nur abhängig von der angewandten Bauweise und den verwendeten feuerfesten Produkten. Die Zerstörung des Ofenmauerwerkes während des Betriebes erfolgt einerseits in einer Verringerung der Stärke des Steines, andererseits in der Zerstörung des Verbandes durch Risse und Sprünge. Die in beiden Fällen erfolgende lokale Steigerung der Außenwandtemperatur kann durch Thermocolorfarben und Thermochromstifte rechtzeitig erfaßt und flächenmäßig sichtbar gemacht werden, wobei die Farbumschläge durch ihre Isotherme den Umfang der Schadenstelle umschreiben; danach können frühzeitig die Maßnahmen für eine meist kurzfristige Ausbesserung noch vor Eintreten eines größeren Schadens getroffen werden.Durch einige Beispiele aus der Praxis wird die frühzeitige Erfassung der Korrosion keramischer Produkte erläutert.
    Additional Material: 7 Ill.
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 406-408 
    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 5 (1954), S. 277-277 
    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 5 (1954), S. 277-277 
    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 5 (1954), S. 278-278 
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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 5 (1954), S. 278-278 
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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 5 (1954), S. 403-406 
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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 5 (1954) 
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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 5 (1954), S. 19-20 
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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 5 (1954), S. 26-28 
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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 5 (1954), S. 37-37 
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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 5 (1954), S. 38-38 
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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 5 (1954), S. 40-40 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 250
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 56-56 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 251
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 72-74 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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  • 252
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 84-87 
    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: Cathodic corrosion PreventionThe article opens with a short definition of the term „Cathodic Corrosion Prevention“ and then describes the possibilities and limits of the application of cathodic protection by the use of outside current supplies in conjunction with an auxiliary insoluble anode. The appearance of cathodic corrosion, which limits the possibilities of this method of corrosion prevention, is described in detail.The results of tests made with iron and aluminum which was subjected to various representative forms of corrosion are given. The current required per sq. metre and per annum, as determined from these tests, forms a criterion for the cost of cathodic corrosion protection.
    Notes: Nach einer kurzen Definition des Begriffes „kathodischer Korrosionsschutz“ wird auf die Möglichkeiten und Grenzen der Anwendung des kathodischen Schutzes mit einer äußeren Stromquelle und einer unlöslichen Hilfsanode hingewiesen. Die Erscheinung der „kathodischen Korrosion“, die die Möglichkeiten der Anwendung des kathodischen Schutzes begrenzt, wird eingehend besprochen.Versuche mit Eisen und Aluminum in einigen typischen Korrosionsmitteln werden mitgeteilt, wobei der Bedarf an elektrischer Energie je m2 und Jahr einen Anhaltspunkt für die Kosten des kathodischen Schutzes gibt.
    Additional Material: 4 Tab.
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  • 253
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 81-83 
    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 Influence of the condition of the Surface of Iron upon the Rapidity of Corrosion when buried in SoilExperiments were made to determine the action of various soils sand, clay and loam upon elements Ferough (damp soil) Fe smooth and Ferough (soils I/II) Fesmooth. Current measurements made with element Ferough (damp soil) Fesmooth demonstrated that the reversal of direction of the current, which is dependent on the dampness of the soil, only takes place between very narrow limits. These limits are correlated to the point at which the soil saturated with water goes over to the unsaturated state.The period of time in which the potential difference between two electrodes of varying surface condition (Ferough Fesmooth) placed in soil, disappears after a definite quantity of electrolyte has been added, could be plotted as characteristic curves. Such curves could give information upon the increased soil activity.
    Notes: Messungen über die unterschiedliche Bodenaggressivität (Sand, Ton und Lehm) wurden mit den Elementen Ferauh (feuchter Boden) Feglatt durchgeführt. Stromstärkemessungen mit dem Element Ferauh (feuchter Boden) Feglatt ergaben, daß Umkehr der Stromrichtung, die von der Feuchtigkeit des Bodens abhängt, nur in einem sehr engen Feuchtigkeitsbereich stattfindet, der dem Übergang von mit Wasser gesättigtem in den ungesättigten Boden zugeordnet ist.Die Zeit, in welcher das Potential zwischen zwei Elektroden verschiedener Oberflächenbeschaffenheit (Ferauh, Feglatt) in einem Boden nach Zufügen einer bestimmten Elektrolytmenge verschwindet, dürfte charakteristische Kurven ergeben, die Aufschluß über eine vergrößerte Bodenaggressivität liefern.
    Additional Material: 5 Ill.
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  • 254
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 92-94 
    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 Basic Causes of “Short” Fractures in MetalsThis article forms a report on various lectures delivered at a Meeting which was held to determine the present extent of knowledge of “short” fractures. The lectures were published in Nos. 415 (1953) of the “Raeder Rundschau”, and dealt exhaustively with the phenomena of “short” fractures of various metals in use in industry, as well as of welded and non-welded components. The lectures also included a survey of the causes of “short” fractures as far as present-day knowledge and the various theories on fractures permitted. In addition, various important questions regarding the various methods of testing metals for their liability to short fracture “are discussed”.
    Notes: Referat über Vorträge anläßlich einer Tagung über den heutigen Stand des Sprödbruchproblems.  -  Die in Heft 4/5 (1953) der „Radex-Rundschau“ veröffentlichten Vorträge behandelten das grundsätzliche Erscheinungsbild des spröden Bruches bei verschiedenen metallischen Werkstoffen, ungeschweißten und geschweißten Konstruktionsteilen und gaben eine Uebersicht über die Entstehung von spröden Brüchen, soweit sie nach unseren heutigen Kenntnissen und Anschauungen über den Aufbau der metallischen Werkstoffe und auf Grund der Bruchtheorien abgeleitet werden könne. Ferner wurde auch eingehend die technisch wichtige Frage der Prüfverfahren zur Feststellung der Sprödbruchempfindlichkeit eines Werkstoffes erörtert.
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 104-106 
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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 5 (1954), S. 98-104 
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    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Additional Material: 1 Tab.
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 87-92 
    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: Contributions to the Theory of Chemical Polarisation during Solution, Separation and Overstressing of MetalsIt was shown that the appearance of surface layers is an essential factor in the chemical polarisation which occurs during the solution, separation, overstressing, inhibitory action, polishing and passivity of metals. The surface layers exercise a restraining effect on the adjustment of the equilibrium of association. These layers are to be found on practically all metals and even in solutions which are capable of dissolving the material of which the layers are composed. They are created by a slowing down in the speed of the diffusion of the ions necessary for the dissolving of the metal in relation to the more rapid formation of layers on the surface of the metal. Such surface layers differ from the usual macromolecular surface layers, such as oxides or scale, rust, salts, etc., in their solubility. Their formation continues at a very high reproductive rate, even though the top layers are removed, and they form an indication of the behaviour of the metal in solutions after it has been subjected to suitable preliminary treatment. In contra-distinction to the irreversible macro-molecular surface layers, the afore-mentioned layers can be regarded as being reversible micro-molecular coverings.
    Notes: Es wird gezeigt, daß das Auftreten von Deckschichten ein wesentlicher Faktor bei der chemischen Polarisation, bei der Auflösung oder Abscheidung von Metallen, bei der Überspannung, Inhibitorwirkung, Glanzwirkung und Passivität ist. Die Deckschichten bewirken eine Hemmung der Gleichgewichtseinstellung. Sie sind auf praktisch allen Metallen und selbst in solchen Lösungen vorhanden, die an sich befähigt wären, die Deckschichtsubstanz aufzulösen. Sie entstehen durch eine geringere Geschwindigkeit des Diffusionsvorgangs, der für die Metallauflösung erforderlichen Ionen im Vergleich zur schnelleren Deckschichtenbildung unmittelbar auf der Metalloberfläche. Derartige Deckschichten unterscheiden sich wesentlich von den bekannten makromolekularen Deckschichten wie Oxyd- oder Zunderschichten, Rost, Salzschichten usw. durch ihre verschiedene Löslichkeit. Sie bilden sich selbst nach ihrer Entfernung immer wieder und zwar sehr gut reproduzierbar nach und sind ein Kennzeichen für das Metall hinsichtlich seines Verhaltens bei einer bestimmten Vorbehandlung in einer bestimmten Lösung. Sie können im Gegensatz zu den irreversiblen makromolekularen Deckschichten als reversible, mikromolekulare Bedeckungen angesehen werden.
    Additional Material: 3 Ill.
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 94-98 
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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: Preparation and Passivation of light metals for paintingAluminum and magnesium alloys are forming natural oxide films, the strengthening of which is performed by several methods of chemical and electrolytic oxidation. Light metals are also protected by insoluble films of metal salts (phosphate films) in a similar manner as the iron metals. In recent years a new method was developed whereby metal organic protective films are produced by using so-called reaction primers (wash primers). All these protective films are functioning likewise as anticorrosive coatings and as adhesive substrates for paint and lacquer coatings.
    Notes: Aluminium- und Magnesium-Legierungen bilden an der Luft natürliche Oxydhäute, deren Verstärkung durch die verschiedenen Verfahren der chemischen und elektrolytischen Oxydation der Leichtmetalle angestrebt wird. Außer durch die unlöslichen Oxydschichten werden Leichtmetalle ebenso wie Eisenmetalle auh durch unlösliche Metallsalzschichten (Phosphatfilme etc.) geschützt. Auch die durch die sog. Reaktionsprimer oder Metallwandler erzeugten metallorganischen Deckschichten werden als antikorrosive Überzüge und Haftgründe für die nachfolgende Lackierung angewendet.
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 107-110 
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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 5 (1954), S. 110-114 
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 110-110 
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 114-114 
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 114-114 
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 114-117 
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 117-117 
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    Keywords: Chemistry ; Polymer and Materials Science
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 118-118 
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. I 
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    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: Quartz Bricks and BlocksAt first only hollow-ware (tubes, vessels, etc.) suitable for the needs of the chemical and allied industries, was manufactured from quartz produced by fusing pure quartz sand. The production of solid articles was neglected, since the advantages of the non-porous structure, combined with its heat and chemical resistant properties, which protect quartzware from the action of pulverised, liquid and gaseous agents, was only realised later. It was the initiative of users which led to the production of quartz bricks, which were used in copper works, Siemens-Martin furnaces chemical works and certain specialised electric furnaces. These quartz bricks proved to be far superior to all other materials, but were found to be too small and too expensive. A well-known glassworks was successful in developing quartz bricks suitable for tank-linings, whereby a far superior quality of glass was obtained with less contamination, better colours and no bubbles, knots or streaks. The same type of brick was also found ot be of great use in chemical works. Quartz bricks and blocks were first produced by means of compressed resistance fusion and, later, by solid fusion, but in every case one fusion operation was required to produce one brick or block. Nowadays blocks are produced by cutting up billets of large cross-sectional area, so that they can be produced in large quantities at economic prices for all purposes where their application has proved successful.
    Notes: Quarzgut, erschmolzen aus reinem Quarzsand, wurde entsprechend den chemischen und ähnlichen Bedürfnissen vorwiegend als Hohlkörper (Rohre, Gefäße, u. ä.) hergestellt,  -  Vollkörper wurden vernachlässigt,  -  die Vorteile der nichtporösen Struktur wurden erst spät erkannt, die verbunden mit der thermischen und chemischen Festigkeit Quarzgut vor dem Angriff staubförmiger, flüssiger und gasförmiger Agenzien schützt. Erst Verbraucher-Initiative führte zum Quarzgut-Stein, der sich in Kupfer-Raffinier-, in Siemens-Martin-, in Spezial-Elektro-Öfen wie in chemische Analgen eingesetzt, allen anderen Stoffen überlegen erwies, aber zu klein und zu teuer war. Eine bekannte Glashütte entwickelte mit Erfolg den Quarzgut-Wannenstein und erzielte damit weit bessere Gläser,  -  weniger Verunreinigungen, bessere Farben, keine Blasen, Knoten, Schlieren! Der gleiche Stein bewährte sich dann auch für Chemische Großanlagen.  -  Quarzgut-Steine entstanden zunächst aus gepreßten Ein- oder Mehrstab-Widerstandsschmelzen, später aus Vollkörper-Schmelzen, doch ergab eine Schmelze nur einen Block. Heute können Blöcke von einem querschnitts-großen Strang abgetrennt und zerteilt werden,  -  so ist Massen-Herstellung zu billigen Preisen für alle erprobten Zwecke möglich.
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 141-147 
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    Keywords: Chemistry ; Polymer and Materials Science
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 157-157 
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 168-172 
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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: The Prevention of Water Corrosion in RefineriesThe protection of equipment against the corrosive effects of water is problem that affects underground storage tanks, boilers and other equipment. The degree of corrosion depends essentially on factors such as the presence and nature of im-purities in the water, temperatures prevailing in the system and the velocity of the flowing water. The following methods of corrosion prevention are discussed:  -  cathodic protection, organic coatings (paints), metallic coatings, the addition of corrosion retardants, pretreatment of the water (de-aeration) and choice of suitable metals or alloys as materials of construction.
    Notes: Der Korrosionsschutz von Anlagen gegen Wasser tritt in vielfältiger Gestalt auf, bei unterirdischen Lagertanks, Dampfkesseln und Freikonstruktionen. Für die Stärke des korrosiven Angriffes sind hierbei wesentlich maßgebend die Gegenwart und Natur von Verunreinigungen, die temperatur des Systems und die Strömungsgeschwindigkeit des Wassers. Von den Verfahren zur Korrosionskontrolle werden behandelt: Kathodischer Schutz, organische Überzüge (Anstriche), metallische Überzüge, Hemmstoffzusätze, Änderung der Umgebung durch Vorbehandlung (Entlüftung) der Wässer und Wahl geeigneter Metalle bzw. Legierungen.
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 194-195 
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    Keywords: Chemistry ; Polymer and Materials Science
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 223-224 
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    Keywords: Chemistry ; Polymer and Materials Science
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 238-240 
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 398-401 
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 408-409 
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 412-418 
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. I 
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    Keywords: Chemistry ; Polymer and Materials Science
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 430-433 
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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: The Initial Corrosion of Metals in Contact with Aqueous Solutions at Room TemperaturesThe writer differentiates between two types of initial corrosion, which are characterised either by a rapid, many thousand-fold increase over the initial value (incubation period), or by a very rapid drop in corrosion, which can only be determined by oscillographic (methods at the commencement). In both cases it is assumed that a local element is formed, which can also be proved by evidences of coating.
    Notes: Der Verfasser unterscheidet zwei Bereiche der Anfangskorrosion, die entweder durch ein sehr rasches Ansteigen bis auf das Tausendfache und mehr des Anfangswertes (Inkubationsperiode) oder durch ein sehr rasches (anfänglich nur oszillographisch erfaßbares) Absinken der Korrosion gekennzeichnet sind. In beiden Fällen wird eine Lokalelementbildung angenommen, wie auch an Überspannungserscheinungen festgestellt wird.
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 441-451 
    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 Protection of Steel Constructional Work from CorrosionDependence of the formation of rust on climate, presence of electrolytes and the type of steel used  -  Mill scale diminishes the life of protective coatings and should therefore be removed  -  Chipping and other manual methods of scale removal are usually insufficient and should not be used on new constructional work  -  Sand blasting with coarse sand leaves points on the surface of the metal which facilitate the formation of rust, hence, only relatively fine sand should be used for this purpose  -  Flame descaling with a primer applied to the warm surface is advantageous  -  Removal or conversion of rust by chemical means has not proved successful in the case of steel constructional work  -  Wash primer and spray galvanizing  -  Effect of moisture and the chemical action of the ambient atmosphere on the application of protective coatings  -  Importance of the thickness of the film of the coating  -  Summary of the more important binders for use with anti-corrosive paints (oil binders, linseed varnish, hot linseed oil, wood oil)  -  Action and effect of pigments  -  Red lead and lead  -  cyanamide primary colours  -  Alkyd resin paints and oil-alkyd paints  -  Chlorinated rubber paints, chlorinated rubber-oil combinations and chlorinated rubber-alkyd combinations  -  Bituminous anti-corrosive paints on primers of asphalt, bituminous and coal tar pitch  -  Tar pitch emulsions - Suggestions for the choice of suitable anti-corrosive paints.
    Notes: Abhängigkeit der Rostbildung vom Klima, der Anwesenheit von Elektrolyten und der Art des Eisens  -  Walzzunder verringert die Haltbarkeit von Schutzanstrichen und sollte entfernt werden  -  Handentrostung ist meist unzureichend und sollte bei Neukonstruktionen nicht angewandt werden.  -  Grobe Sandstrahlung hinterlässt Spitzen, welche Ansatz zur Rostbildung geben, deshalb relativ fein strahlen  -  Flammentrostung in Verbindung mit Grundanstrich auf noch warme Eisen ist vorteilhaft  -  Chemische Entrostung und Rostumwandlung bei Stahlbauten nicht bewährt  -  Washprimer und Spritzverzinkung  -  Wirkung der Feuchtigkeit und aggressiver Atmosphäre bei der Ausführung von Anstrichen  -  Bedeutung der Filmdicke  -  Schema der wichtigsten Bindemittel für Rostschutzfarben  -  Die Ölbindemittel, Leinöfirnis, Standöl, Holzöl  -  Art und Wirkung der Pigmente  -  Bleimennige und Bleicyanamidgrundfarben  -  Alkydharzfarben und Öl-Alkyd-Kombindationsfarben  -  Chlorkautschukfarben, Chlorkautschuk-Öl-Kombinationen und Chlorkautschuk-Alkyd-Kombinationen  -  Bituminöse Rostschutzfarben auf der Grundlage von Asphalt  -  Bitumen und Steinkohlenteerpech  -  Teerpech-Emulsionen  -  Vorschläge fü die Wahl der je nach Anwendungsgebiet geeigneten Rostschutzfarben.
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 461-464 
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    Keywords: Chemistry ; Polymer and Materials Science
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 465-466 
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 467-468 
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    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 469-469 
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