Multicomponent coating for enhanced oxidation resistance of tungsten

Abstract

The development of robust high temperature oxidation resistant coatings for tungsten was evaluated for a Mo-Si-B coating system that was applied by a two step process. The synthesized coating shows a graded structure composed of various amounts of molybdenum and tungsten disilicide as well as an aluminoborosilica top layer. Oxidation tests conducted at 1100-1400°C demonstrate that the coating provides effective oxidation protection for tungsten. Furthermore, the Mo-Si-B coatings provide an enhanced oxidation resistance compared to that for W-Si-B-coatings or WSi 2 coatings.

Document Type

Article

DOI

https://doi.org/10.1016/j.surfcoat.2012.08.011

Keywords

Coating, Disilicide, Mo-Si-B, Oxidation, Tungsten

Publication Date

8-25-2012

Journal Title

Surface and Coatings Technology

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