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The Oxidation of Nickel-Aluminum and Iron-Aluminum Alloys*
Published online by Cambridge University Press: 21 February 2011
Abstract
The high-temperature oxidation behavior of several ordered alloys in the Ni-Al and Fe-Al systems is reviewed with special emphasis on Ni3Al and NiAl. Ordering influences oxidation through its effect on the activities of the alloy components and by changing the point defect concentration in an alloy. Three categories of Ni-Al alloys are distinguished based on Al content and oxidation behavior. A characteristic feature of the oxidation of high-aluminum Ni-Al and Fe-Al alloys is the formation of voids in the substrate at the oxide-metal interface. The mechanism of void formation and its suppression by minor additions of oxygen-active elements is discussed. A brief description of the effect of preoxidation on the reactions of Ni3Al-base alloys in SO2/O2 environments is also included.
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- Copyright © Materials Research Society 1985
Footnotes
Research sponsored by the Office of Energy Utilization Research, Energy Conversion and Utilization Technologies (ECUT) Program and the Office of Technical Coordination, Advanced Research and Technology Development (AR&TD) Fossil Energy Materials Program, U.S. Department of Energy, under contract DE-ACO5-840R21400 with Martin Marietta Energy Systems, Inc.
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