Microstructure and ablation mechanism of C/C-ZrC-SiC composites in a plasma flame

被引：81

作者：

Wang, Shaolei ^{[1
]}

Li, Hong ^{[1
]}

Ren, Musu ^{[1
]}

Zuo, Yazhuo ^{[1
]}

Yang, Min ^{[1
]}

Zhang, Jiabao ^{[1
]}

Sun, Jingliang ^{[1
]}

机构：

[1] Shanghai Univ, Res Ctr Composite Mat, Shanghai 200072, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2017年 / 43卷 / 14期

关键词：

C/C-ZrC-SiC composites; Microstructure; Ablation mechanism; REACTIVE MELT INFILTRATION; CARBON-CARBON COMPOSITES; CARBON/CARBON COMPOSITES; OXYACETYLENE TORCH; PRECURSOR INFILTRATION; PYROLYSIS PROCESS; BEHAVIOR; OXIDATION; C/ZRC; PERFORMANCES;

D O I：

10.1016/j.ceramint.2017.04.089

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：

Ablation behavior of C/C-ZrC-SiC composites was investigated using a plasma flame. The composites exhibited excellent ablation performance. After ablation for 180 s, three ldnds of ablation behavior appeared from the border to the center on the surface, which were closely related to the temperature and denudation force. Additionally, the ablation behavior in the cross-sectional direction of the composites was mainly controlled by the temperature. During the ablation, ZrC and SiC were oxidized into ZrO2 and SiO2, respectively, resulting in the formation of a ZrO2-SiO2 binary eutectic system. The ablation mechanism was also discussed, which could provide strong illustration of the evolution processes of the eutectic system at different temperatures.

引用

页码：10661 / 10667

页数：7

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