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  • 1
    Electronic Resource
    Electronic Resource
    Low-cost Oxygen Electrode Material (1970)
    [s.l.] : Nature Publishing Group
    Nature 226 (1970), S. 847-848 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The activity of lanthanum cobaltite (LaCoO3) has been discovered during an investigation of semiconducting oxides as potential oxygen electrode materials. Attention has concentrated particularly on oxides with high conductivity (〉 103 ?,?1 m?1) to permit the use of a bulk electrode of an active ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/226847a0
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  • 2
    Electronic Resource
    Electronic Resource
    The mechanism of corrosion of Fe-9%Cr alloys in carbon dioxide (1980)
    Springer
    Oxidation of metals 14 (1980), S. 499-516 
    Details
    ISSN: 1573-4889
    Keywords: corrosion mechanism ; carbon dioxide ; oxygen-18 ; iron-9% Cr alloys
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Oxide layers have been grown on Fe-9% Cr, Fe-9% Cr-0.3% Si, and Fe 9% Cr-0.6% Si alloys in carbon dioxide at 853 °K. It is known that such oxides are duplex, the outer layer being magnetite, formed by iron transport. The inner layer is Fe-Cr spinel but little is known about its growth mechanism so this has been investigated using oxygen-18 as a tracer. Oxides were grown first in C16O2 and then in C18O2 and the distribution of oxygen-18 in the scale measured using nuclear techniques. For all the alloys used, significant amounts of oxygen-18 were observed within the inner layer in addition to growth of18O-rich magnetite at the outer surface. The two possibilities of the oxygen-18 being present as a consequence of isotopic exchange or because new oxide had formed within the spinel layer are discussed. Our conclusion is that it is very unlikely that significant isotopic exchange had occurred in any part of the scale, and we deduce that at least a substantial amount of the oxygen-18 in the inner layer was deposited as a result of new oxide formation within that layer. The results also indicate that the location of growth sites within the inner layer differed between the alloys.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00603476
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  • 3
    Electronic Resource
    Electronic Resource
    High temperature corrosion in gases with low oxygen partial pressureDedicated to Professor Dr. Alfred Rahmel on the occasion of his 60th birthdayPlenary lecture, held at the 8th European Corrosion Congress in Nice, 19-21 November 1985. (1987)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 38 (1987), S. 516-520 
    Details
    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: Hochtemperaturkorrosion in Gasen mit niedrigem SauerstoffpartialdruckDie technische Bedeutung des Verhaltens von Metallen bei der Hochtemperaturkorrosion in Gasen mit niedrigem Sauerstoffpotential, die jedoch weitere Oxidationsmittel erhalten, wird gezeigt. Danach ist die Rolle des Schwefels und auch von Chlorverbindungen von großer Bedeutung, denn solche Verbindungen sind bei niedrigen Sauerstoffpotentialen so aggressiv, daß sogar unterhalb von 400°C starke Korrosion auftreten kann. Die wissenschaftlichen Grundlagen des gegenwärtigen Kenntnisstandes der Korrosion in solchen Atmosphären werden erörtert und auf den Fall der Korrosion unter stöchiometrischen Verbrennungspunkten angewandt, die in Kohlestaubfeuerungen auftreten.
    Notes: The technological importance of the high temperature corrosion behaviour of metals in gases with a low oxygen potential and containing other oxidants is outlined. This indicates the wide interest in the role of sulphur and also chlorine compounds, their aggressiveness being such in low oxygen potentials that serious corrosion rates can occur even below 400°C. The scientific basis of our understanding of corrosion in such atmospheres is discussed, and applied to the case of corrosion in sub-stoichiometric combustion products in pulverized coal boilers.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19870380909
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  • 4
    Electronic Resource
    Electronic Resource
    Points to be considered in thermogravimetry (1993)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 44 (1993), S. 345-350 
    Details
    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: Bei der Thermogravimetrie zu berücksichtigende HinweiseKontinuierliche Thermogravimetrie ist eine verbreitete Methode, um Werkstoffe in korrosiven Gasen bei hohen Temperaturen zu prüfen und um Kinetik und Mechanismen der Hochtemperaturkorrosion aufzuklären. Hier werden Empfehlungen zur Durchführung thermogravimetrischer Tests zusammengestellt, Hinweise gegeben betreffend Probengröße und -form, Oberflächenpräparation, Reaktionsrohr, Start des Experiments, besonders empfindliche Messungen und Gasströmung und -regelung. Die Veröffentlichung ist als Grundlage und Startpunkt für zu entwickelnde Richtlinien für die Hochtemperaturkorrosionsforschung gedacht.
    Notes: Continuous thermogravimetry is a common method to test materials in gaseous corrosive environments at high temperatures and to elucidate kinetics and mechanisms of high temperature corrosion. Recommendations how to conduct thermogravimetric tests are collected here, points to be considered including sample size and form, surface preparation, reaction chamber, starting procedure, sensitive measurements, gas supply and dosing. This study is meant as a starting foundation for establishing guidelines in high temperature corrosion research.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19930440805
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  • 5
    Electronic Resource
    Electronic Resource
    An introduction to fireside corrosion experience in the central electricity generating board (1988)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 39 (1988), S. 45-48 
    Details
    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: Einführung in die Betriebserfahrungen mit der feuerseitigen Korrosion beim Central Electricity Generating BoardDie Arbeit bringt eine kurze Übersicht der beim CEGB gesammelten Erfahrungen mit der feuerseitigen Korrosion. Zunächst werden die Zahlen der Kraftwerke und die Betriebsbedingungen angegeben, wobei die für die Dampfkessel verwendeten Werkstoffe aufgelistet werden. Ebenfalls zusammengefaßt sind die Korrosionserscheinungen von Ofenwänden und Überhitzern bzw. Erhitzern in kohlebeheizten Anlagen, wobei ausdrücklich erwähnt wird, daß man die feuerseitige Korrosion nicht vermeiden, sondern nur unter Kontrolle halten kann. Dabei wird auf die Bedeutung von korrosionsbeständigeren Werkstoffen hingewiesen, wie sie speziell in coextrudierten Rohren verfügbar sind. Die beim CEGB benutzten Methoden zur Lebensdauervorhersage werden skizziert, und drei gegenwärtig bearbeitete Forschungsgebiete werden beschrieben.
    Notes: This paper briefly reviews CEGB fireside corrosion experience. It first summarises the numbers and operating conditions of the plants, and indicates the range of materials used in the boilers. Experience of furnace wall and superheater/reheater corrosion in coal fired plant is summarised, emphasising the need to “control” fireside corrosion rather than being able to eliminate it, and the importance of more corrosion resistant materials, particularly as coextruded tube. Tube life prediction techniques in use by the CEGB are outlined, and three current areas of research are described.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19880390203
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Recent initiatives in the use of modern electrochemical instrumentation for FGD corrosion investigation and surveillance (1992)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 43 (1992), S. 321-328 
    Details
    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: Neuere Initiativen bei der Verwendung moderner elektrischer Instrumentierung für Korrosionsuntersuchung und -überwachung in REA'sDie Arbeit gibt eine Übersicht der Entwicklung der modernen kontinuierlichen Korrosionsüberwachungstechnik im Laufe der vergangenen 12 Jahre. Zwar wurde diese Technik ursprünglich zur Untersuchung des Korrosionsverhaltens in trockenen Rauchgassystemen entwickelt, doch hat sie zunehmend auch auf anderen Gebieten Eingang gefunden. Mehrere neuere Anwendungen in REA's in den USA haben die Zweckmäßigkeit dieser Technik für die Kraftwerkstechnik betätigt.Die Arbeit beschreibt die instrumentelle Ausrüstung und gibt einen Überblick der Erfahrungen im Laboratorium und bei der betrieblichen Anwendung. Ebenso werden die Möglichkeiten künftiger Anwendungen zur Bekämpfung der Korrosion und der Verringerung der Korrosionswirkungen in der Kraftwerkstechnik und bei der Überwachung der Luftverschmutzung erörtert.
    Notes: The paper reviews the development of modern continuous corrosion surveillance technology during the past twelve years. Although originally developed to investigate corrosion behaviour in dry flue gas systems, the approach has found increasing use in other fields. Several recent applications in American flue gas desulphurisation (FGD) systems have confirmed its usefulness for the power generation industry.The paper presents a description of the instrumentation and reviews laboratory and in-plant applications experience. The potential for future use to control corrosion and mitigate its effects in power generation and airpollution control systems is also discussed.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19920430614
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    The electrical resistivity of some castable zirconias (1969)
    Springer
    Journal of materials science 4 (1969), S. 768-772 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The variation of electrical resistivity with temperature has been measured for four castable zirconias: 6.0 mole % calcia-stabilised, 8.5 mole % yttria-stabilised, and 25 and 50 mole % ceria-stabilised zirconia. The calcia-and yttria-stabilised castables need to be sintered at over 2000° K to develop their electrical conductivity fully, but that of the ceria-stabilised castables is independent of sintering temperature, and is similar to that of normally prepared ceramic. The castables are discussed with particular reference to their possible application as M H D electrode materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00551070
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  • 8
    Electronic Resource
    Electronic Resource
    The use of SIMS with a microfocused ion beam to study thick corrosion scales (1986)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 9 (1986), S. 388-388 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740090612
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