Influence of small amounts of Si and Cr on the high temperature oxidation behavior of novel cobalt base superalloys

Liang Z, Göken M, Lorenz U, Neumeier S, Oehring M, Pyczak F, Stark A, Wang L (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Corrosion Science Elsevier

Book Volume: 184

Article Number: 109388

DOI: 10.1016/j.corsci.2021.109388

Abstract

The effect of small amounts of Si and Cr on the high temperature oxidation of alloys based on Co-9Al-9W was investigated at 900 °C. The results show that the effect of Si additions on oxidation resistance was more pronounced than for Cr additions. An addition of 4 at.% Cr was insufficient to produce a protective layer, while 2 at.% Si led to the formation of a dense, continuous Al2O3 scale. The thermodynamics and kinetics for Al2O3 layer formation were analyzed by combining CALPHAD and Wagnerʼs theory.

Authors with CRIS profile

Mathias Göken Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Steffen Neumeier Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

Additional Organisation(s)

Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

Involved external institutions

Central South University CN China (CN) Helmholtz-Zentrum Geesthacht Zentrum für Material- und Küstenforschung GmbH (HZG) DE Germany (DE)

How to cite

APA:

Liang, Z., Göken, M., Lorenz, U., Neumeier, S., Oehring, M., Pyczak, F.,... Wang, L. (2021). Influence of small amounts of Si and Cr on the high temperature oxidation behavior of novel cobalt base superalloys. Corrosion Science, 184. https://doi.org/10.1016/j.corsci.2021.109388

MLA:

Liang, Zhida, et al. "Influence of small amounts of Si and Cr on the high temperature oxidation behavior of novel cobalt base superalloys." Corrosion Science 184 (2021).

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