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  • 1985-1989  (3)
  • 1965-1969  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 4 (1969), S. 768-772 
    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
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 39 (1988), S. 45-48 
    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
    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
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  • 3
    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
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  • 4
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 9 (1986), S. 388-388 
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Type of Medium: Electronic Resource
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