Journal
SCRIPTA MATERIALIA
Volume 55, Issue 10, Pages 903-906Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2006.07.044
Keywords
chemical vapor deposition (CVD); pack cementation; oxidation; high temperature; coatings
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The application of a pack cementation coating of aluminum on Mo-rich Mo-Si-B alloys prior to oxygen exposure yields a significant improvement in the oxidation resistance over a wide temperature range (732-1372 degrees C). Upon exposure to oxygen, the Mo3Al8-rich layer that forms during the aluminum pack cementation treatment develops a protective Al2O3 layer on the surface that can be maintained by inhibiting Al diffusion into the substrate. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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