Microstructural evolution of carbon fiber reinforced SiC-based matrix composites during laser ablation process. Issue 12 (December 2019)

• Record Type: Journal Article
• Authors: Dang, Xiaolin; Yin, Xiaowei; Fan, Xiaomeng; Ma, Yuzhao; Wang, Jiangtao; Ju, Panfei; Song, Hongwei
• Is Part Of: Journal of materials science & technology. Volume 35:Issue 12(2019)
• Page Start: 2919
• Page End: 2925
• Publication Date: 2019-12
• Subjects: Ablation performance -- C/SiC composite -- Laser ablation -- Mechanism; Metals -- Periodicals; Materials science -- Periodicals; Materials science; Metals; Periodicals; 620.1105
• DOI: 10.1016/j.jmst.2019.04.042
• Languages: English
• ISSNs: 1005-0302

Abstract

Abstract: 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.