Experimental investigation on laser ablation of C/SiC composites subjected to supersonic airflow

被引：41

作者：

Wang, Jiangtao ^{[1
,2
]}

Ma, Yuzhao ^{[3
]}

Liu, Yuwen ^{[4
]}

Yuan, Wu ^{[1
,2
]}

Song, Hongwei ^{[1
,2
]}

Huang, Chenguang ^{[1
,2
]}

Yin, Xiaowei ^{[3
]}

机构：

[1] Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China

[3] Northwestern Polytech Univ, Thermostruct Composite Mat Lab, Xian 710072, Shaanxi, Peoples R China

[4] Yanshan Univ, Dept Environm & Chem Engn, Qinhuangdao 066004, Hebei, Peoples R China

来源：

OPTICS AND LASER TECHNOLOGY | 2019年 / 113卷

基金：

中国国家自然科学基金;

关键词：

Laser ablation; Supersonic airflow; C/SiC composite; Mechanical erosion; BEHAVIOR; REDUCTION;

D O I：

10.1016/j.optlastec.2019.01.019

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Continuous wave laser ablation behavior of C/SiC composites subjected to supersonic airflow, as well as in static air environment, is investigated experimentally. Ablation morphology and microstructure of the ablation region are measured by 3D digital microscope system and profiling system, respectively. Effects of supersonic airflow on the ablation morphology and ablation rates of the C/SiC composite are analyzed. Experimental results indicate that the mechanical erosion by supersonic airflow increases the ablation rates and smoothens the ablation surface. Many carbon fibers are left at the edge of center region due to the cooling effect of the supersonic airflow. The laser ablation behavior of C/SiC composites in supersonic airflow is attributed to the combined effect of convective cooling and mechanical erosion.

引用

页码：399 / 406

页数：8

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