高温热处理对国产KD-SA型SiC纤维组成结构与力学性能的影响

吴爽, 苟燕子, 王永寿, 宋曲之, 张庆雨, 王应德

Effect of Heat Treatment on Composition, Microstructure and Mechanical Property of Domestic KD-SA SiC Fibers

WU Shuang, GOU Yanzi, WANG Yongshou, SONG Quzhi, ZHANG Qingyu, WANG Yingde

表2 纤维中自由碳的拉曼峰信息

Table 2 Raman characteristics of free carbon phase of the fibers

Sample D Band G Band ID/IG La/nm Position/cm-1 FWHM Position/cm-1 FWHM F-II 1356.3 112.5 1599.8 122.7 1.39 13.8 F-II-1800 ℃ 1351.3 59.9 1586.8 63.2 1.09 17.6 F-III 1352.9 79.9 1590.1 89.0 1.12 17.2 F-III-1800 ℃ 1354.3 64.9 1593.0 72.8 1.18 16.3