Anti-Ablation Property of MoSi2 Coatings Deposited by APS

Yan Bo Liu; Quan Sheng Wang; Kang Zhi Ma; Jun Liang Liu; Si Hao Wei; Wen Chao Fan

doi:10.4028/www.scientific.net/MSF.789.522

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HomeMaterials Science ForumMaterials Science Forum Vol. 789Anti-Ablation Property of MoSi2 Coatings Deposited...

Anti-Ablation Property of MoSi₂ Coatings Deposited by APS

Abstract:

Carbon fiber reinforced carbon matrix composites (C/C) have received much attention due to their excellent high-temperature strength, high thermal conductivity, low coefficient of thermal expansion (CTE), good thermal shock resistance. However, the poor ablation resistance of the C/C restricts its high temperature ablating applications. Making a thin anti-ablation coating on the C/C has been proved to improve the performance effectively. In order to improve the anti-ablation property of the composite, MoSi₂ coatings were deposited by Atmosphere Plasma Spraying (APS) on the SiC covered C/C matrix. The SiC coatings were prepared by pack cementation. Oxyacetylene flame torch was selected to simulate the ablation situation. The ablation temperature was 1800°C. XRD and SEM were employed to discover the diversification of the coatings structure and composition. And the mechanism of anti-ablation of the MoSi2 coatings system was investigated in this paper.

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Periodical:

Materials Science Forum (Volume 789)

Pages:

522-529

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.789.522

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Online since:

April 2014

Authors:

Yan Bo Liu*, Quan Sheng Wang, Kang Zhi Ma, Jun Liang Liu, Si Hao Wei, Wen Chao Fan

Keywords:

Anti-Ablation, APS, C/C Composite, MoSi₂ Coating

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