Self-healing and failure behavior of yttrium silicate coated SiCf/SiC composites in air at elevated temperatures
Self-healing and failure behavior of yttrium silicate coated SiCf/SiC composites in air at elevated temperatures
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硅酸钇涂层 SiCf/SiC 复合材料在高温空气中的自修复和失效行为
DOI：
10.1016/j.ceramint.2022.10.057
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发表时间：
2022-10
影响因子：
5.2
通讯作者：
Ning Dong
中科院分区：
文献类型：
--
作者：
Fang He;Yejie Cao;Yongsheng Liu;Jingxin Li;Jing Wang;Binghui Zhang;Ning Dong
In this study, self-healing and failure behavior of yttrium silicate (YS)-coated silicon carbide fibers-reinforced silicon carbide matrix (SiCf/SiC) composites were systematically investigated at temperatures ranging from 1000 to 1400 °C for 100 h in air. The self-healing mechanism involves the filling of cracks with SiO2glass and Y2Si2O7(oxidation product). The three-point bending strength of samples before and after oxidation was determined in order to clarify the self-healing performance. The strength and strength retention of YS-coated SiCf/SiC composites after oxidation were consistently higher than those of the oxidized SiCf/SiC composites. The strength retention rate of YS-coated SiCf/SiC composites was found to be 110% at 1100 °C, while the corresponding value for SiCf/SiC composites was only 68%. According to the Deal and Grove oxidation kinetic model, the oxidation activation energy of YS-coated SiCf/SiC composites was ∼377 kJ mol−1, which is higher than that of SiCf/SiC composites (306 kJ mol−1). These results indicate that the YS coating can protect SiCf/SiC composites in oxidizing environments. Moreover, the degradation mechanisms of YS-coated SiCf/SiC composites were expounded by finite element analysis.
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DOI：
--
发表时间：
2007
期刊：
--
影响因子：
--
作者：
Jurv Irol;Hanolo JottNsor't
通讯作者：
Jurv Irol;Hanolo JottNsor't
影响因子：
1.2
作者：
H. Vu;M. Nanko
通讯作者：
H. Vu;M. Nanko
硅酸钇化学气相沉积的理论与实验研究
影响因子：
5.2
作者：
He Fang;Liu Yongsheng;Gao Yuqing;Wang Jing;Zhang Chengyu
通讯作者：
Zhang Chengyu
热处理对硅酸钇基改性SiCf/SiC复合材料显微组织和强度的影响
影响因子：
5.7
作者：
Fang He;Yongsheng Liu;Jian Li;Binghui Zhang;Ning Dong;Yejie Cao;Jing Wang
通讯作者：
Jing Wang
DOI：
10.1002/3527605622.ch36
发表时间：
2001
期刊：
--
影响因子：
--
作者：
Kang N. Lee;D. Fox;R. Robinson;N. Bansal
通讯作者：
Kang N. Lee;D. Fox;R. Robinson;N. Bansal