Microstructural evolution of carbon fiber reinforced SiC-based matrix composites during laser ablation process

查看全文 作　　者：Xiaolin [1]Dang;Xiaowei [1]Yin;Xiaomeng [1]Fan;Yuzhao [1]Ma;Jiangtao [2]Wang;Panfei [1]Ju;Hongwei [2]Song

机构地区：[1]Science and Technology on Thermostructural Composite Materials Laboratory,Northwestern Polytechnical University,Xi'an 710072,China;[2]Key Laboratory for Mechanics in Fluid-Solid Coupling Systems,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Journal of Materials Science & Technology》索引2019年第35卷第12期,共7页

基　　金：the supports of the National Natural Science Foundation of China (Project Nos. 51725205 and 51702261);the 111 Project (B08040) 摘　　要：In this work, four different carbon fiber reinforced SiC-based matrix composites(C/SiC) were prepared,and microstructure evolution during laser ablation process was characterized. Laser irradiation provided a special high-temperature environment up to 3500℃. For all four composites, different morphologies can be obtained in the transition region due to the oxidation of different matrices. While only needle-shaped carbon fiber and nanolayered carbon without any matrix remained in the central region, indicating that graphitization process occurred in the center, resulting from the high-temperature and low-oxygen environment in the laser process. Therefore, the laser ablation of C/SiC composites is controlled by chemical and physical erosion, and mainly by the physical erosion in the center. 关键词：Ablation performance C/SiC composite Laser ablation MECHANISM

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Microstructural evolution of carbon fiber reinforced SiC-based matrix composites during laser ablation process

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