Effect of the Al2O3 additive on the high temperature ablation behavior of the ZrC-ZrO2 coating for SiC-coated carbon/carbon composites

被引：28
作者：
Huo, Caixia [1 ]
Zhou, Lei [1 ]
Guo, Lingjun [1 ]
Wang, Jiancheng [1 ]
Li, Yunyu [1 ]
Sun, Jia [1 ]
Liu, Lei [1 ]
机构：
[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Carbon Carbon Composites Res Ctr, Xian 710072, Shaanxi, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2019年 / 45卷 / 17期
基金：
中国国家自然科学基金;
关键词：
Al2O3; ZrC-ZrO2 composite coating; Anti-ablation property; Carbon/carbon composites; C/C COMPOSITES; PROTECTIVE-COATINGS; THERMAL-SHOCK; RESISTANCE; MICROSTRUCTURE; MECHANISM; ZRO2;
D O I：
10.1016/j.ceramint.2019.08.014
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The Al2O3 additive content in the ZrC-ZrO2 composite coating is adjusted by using the supersonic atmosphere plasma spraying method and the coatings are then tested by the oxyacetylene torch. The influence of the Al2O3 additive content on the anti-ablation property is studied. Results show that the ZrC-ZrO2 coating containing 10 vol% Al2O3 owns the lowest surface porosity and the best ablation resistance property. The ablated area is compact and mainly consists of big grains, which is because the addition of Al2O3 can promote the sintering of liquid ZrO2. The formed Al-Zr-O structure can promote the completeness and stability of the ZrO2 scale, which can inhibit the penetration of oxygen.
引用
收藏
页码：23180 / 23195
页数：16
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