Ablation behavior of rare earth La-modified ZrC coating for SiC-coated carbon/carbon composites under an oxyacetylene torch
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- 作者：Yujun Jia ; Hejun Li ; lihejun@nwpu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Lei Feng ; Jiajia Sun ; Kezhi Li ; Qiangang Fu ; fuqiangang@nwpu.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：A. Ceramic matrix composites ; B. SEM ; C. High temperature corrosion ; C. Oxidation
- 刊名：Corrosion Science
- 出版年：2016
- 出版时间：March 2016
- 年：2016
- 卷：104
- 期：Complete
- 页码：61-70
- 全文大小：4581 K
文摘
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La-modified ZrC coating was prepared by supersonic atmosphere plasma spraying.
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The oxyacetylene ablation behavior of La-modified ZrC/SiC coating was evaluated.
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The coating shows a good ablation resistance under heat flux of 2.4 MW/m2.
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La promotes the liquid phase sintering of ZrO2 and the formation of a compact scale.
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The protection of the scale results in retaining elemental C in its inner layer.