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

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 °C. For all four composites, different mo...

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Bibliographic Details
Published in:Journal of materials science & technology 2019-12, Vol.35 (12), p.2919-2925
Main Authors: Dang, Xiaolin, Yin, Xiaowei, Fan, Xiaomeng, Ma, Yuzhao, Wang, Jiangtao, Ju, Panfei, Song, Hongwei
Format: Article
Language:English
Subjects:
Ablation performance
C/SiC composite
Laser ablation
Mechanism
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Summary: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 °C. 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.
ISSN:1005-0302
1941-1162
DOI:10.1016/j.jmst.2019.04.042