Aluminum pack cementation of Mo-Si-B alloys

Abstract

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 °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.

Document Type

Article

DOI

https://doi.org/10.1016/j.scriptamat.2006.07.044

Keywords

Chemical Vapor Deposition (CVD), Coatings, High temperature, Oxidation, Pack cementation

Publication Date

11-1-2006

Journal Title

Scripta Materialia

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