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  • 1970-1974  (1)
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  • 1
    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 calcium and cerium on the oxidation behaviour of high temperature strength nickel base alloysThermogravimetric investigation into the behaviour of Ni alloys having various Al, Co, Cr, Mo, Nb, Ta, Ti, V, W, and Zr contents; the investigations were carried out at temperatures between 800 and 1200°C; the influence of minor additions of Ca and Ce has been studied simultaneously. It turns out, that the improvement of scale adhesion which can be obtained by these additions is limited to a certain temperature range; above specific upper temperature limits the alloying additions lose their efficiency. From among the alloys investigated Inconel 713C turns out to be the alloy having the highest scaling resistance under these conditions. The scale layers formed are very thin and have excellent adhesion properties.
    Notes: Thermogravimetrische Untersuchungen mit Ni-Legierungen verschiedener Gehalte an Al, Co, Cr, Mo, Nb, Ta, Ti, V, W, Zr bei 800 bis 1200°C. Gleichzeitig wurde der Einfluß geringer Beimengungen von Ca und Ce untersucht. Es zeigt sich, daß für die durch diese Zusätze erreichbare Verbesserung der Haftfestigkeit des Zunders bestimmte obere Grenztemperaturen gelten; oberhalb dieser für jede Legierung charakteristischen Temperatur verlieren die Beimengungen ihre Wirksamkeit. Von den untersuchten Legierungen erweist sich unter diesen Bedingungen Inconel 713C als Legierung mit der besten Verzunderungsbeständigkeit; die entstehenden Zunderschichten sind dünn und besitzen ausgezeichnete Haftfestigkeit.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
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