Aluminum pack cementation of Mo-Si-B alloys
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.
Chemical Vapor Deposition (CVD), Coatings, High temperature, Oxidation, Pack cementation
Sakidja, R., F. Rioult, J. Werner, and J. H. Perepezko. "Aluminum pack cementation of Mo–Si–B alloys." Scripta Materialia 55, no. 10 (2006): 903-906.