Ablation Mechanism and Properties of ZrB2-ZrC-SiC Coating with Micro-Submicron Reinforced Structure

被引：0

作者：

Luo Xiao ^{[1
]}

Yang Xin ^{[1
]}

Huang Qizhong ^{[1
]}

Su Zhean ^{[1
]}

Fang Cunqian ^{[1
]}

Chen Lei ^{[1
]}

机构：

[1] Cent South Univ, Natl Key Lab Sci & Technol Natl Def High Strength, Changsha 410083, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2021年 / 50卷 / 08期

基金：

中国国家自然科学基金;

关键词：

ceramic; micro-submicron reinforced structure coating; ablation mechanism; C/C COMPOSITES; RESISTANCE; OXIDATION; ZIRCONIUM;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

ZrB2-ZrC-SiC coating with micro-submicron reinforced structure was prepared on the C/C composites by vacuum infiltration and reactive melt infiltration. The micro-submicron reinforced structure consisted of micron-sized SiC as the skeleton and submicron-sized ultra-high temperature ceramic particles (UHTCs) as the filler. The ablation resistance of the composites was tested by plasma flame. Results show that during ablation, the micro-submicron reinforced structure composed of concentrated SiC particles and UHTCs is prone to form larger defects under the erosion of ablative airflow. The defects induce ablation gaps that are connected with the surrounding cracks to form larger pits, which cause part of the coating to fall off, and the failure of the whole coating system.

引用

页码：2678 / 2685

页数：8

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