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罗骁,杨鑫,黄启忠,苏哲安,方存谦,陈蕾.具有微米-亚微米增强结构的ZrB2-ZrC-SiC涂层的烧蚀机理与性能[J].稀有金属材料与工程(英文),2021,50(8):2678~2685.[Luo Xiao,Yang Xin,Huang Qizhong,Su Zhean,Fang Cunqian and Chen Lei.Ablation Mechanism and Properties of ZrB2-ZrC-SiC Coating with Micro-Submicron Reinforced Structure[J].Rare Metal Materials and Engineering,2021,50(8):2678~2685.]
Ablation Mechanism and Properties of ZrB2-ZrC-SiC Coating with Micro-Submicron Reinforced Structure
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Received:July 22, 2020  
DOI:
Key words: ceramic  micro-submicron reinforced structure coating  ablation mechanism
Foundation item:国家自然科学基金项目(面上项目,重点项目,重大项目)
Author NameAffiliation
Luo Xiao,Yang Xin,Huang Qizhong,Su Zhean,Fang Cunqian and Chen Lei  
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Abstract:
      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.