Oxidation behavior of Mo-Si-B alloys at medium-to-high temperatures

Continuous exploration of high-temperature structural materials is being driven by the needs of gas-turbine engines capable of withstanding the high-temperature environment. Relatively low melting points of currently applied superalloys restrain the further improvement of service temperatures. With higher melting temperatures above 2000 degrees C, Mo-Si-B alloys are regarded as a new generation of ultrahigh-temperature structural materials. However, oxidation is a concern for the industrial application of Mo-Si-B alloys. Therefore, an in-depth understanding of the oxidation mechanisms may contribute to solving this issue, whereas relevant reviews about their recent advances are lacking. In the current work, a comprehensively systematic review about the oxidation behaviors of Mo-Si-B alloys is described for this purpose. (C) 2020 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

Automated summary

Continuous exploration of high-temperature structural materials is driven by the needs of gas-turbine engines, with Mo-Si-B alloys as a new generation ultrahigh-temperature structural material, but oxidation remains a concern.