Microstructure and wet-oxygen corrosion behaviors of in-suit grown Y3Si2C2 modified SiCf/SiC composites

被引:0
|
作者
Duan, Junjie [1 ]
Chen, Maolin [1 ]
Wang, Jingjing [2 ]
Wang, Yanfei [3 ]
Chen, Sian [3 ]
Liu, Rongjun [3 ]
Xiao, Peng [1 ]
Li, Yang [1 ]
机构
[1] Cent South Univ, Natl Key Lab Sci & Technol High Strength Struct Ma, Changsha 410083, Peoples R China
[2] Guobiao Beijing Testing & Certificat Co Ltd, Beijing 100000, Peoples R China
[3] Natl Univ Def Technol, Sci & Technol Adv Ceram Fibers & Composites Lab, Changsha 410083, Peoples R China
基金
中国国家自然科学基金;
关键词
SiCf/SiC; Y3Si2C2; Wet-oxygen corrosion; Matrix modification; MATRIX COMPOSITES; BARRIER COATINGS; SILICON-CARBIDE; OXIDATION; CERAMICS; CMCS;
D O I
10.1016/j.jeurceramsoc.2024.116882
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Y3Si2C2 ternary ceramics were in-situ grown in SiCf/SiC composites via molten-salt method for the first time, and the microstructure and wet-oxygen corrosion behavior at 1400 degree celsius for the SiCf/SiC-Y3Si2C2 composite are investigated. Results indicated that the Y3Si2C2 are successfully in-situ grown and uniformly dispersed in the matrix. Compared to the unmodified SiCf/SiC, the SiCf/SiC-Y3Si2C2 exhibits a reduction in flexural strength to 200.39 MPa (SiCf/SiC is of 335.89 MPa), while it demonstrates significant enhancement in wet-oxygen corrosion resistance with a strength retention rate of 89.3 % (SiCf/SiC is of 25.8 %) under conditions of wet-oxygen corrosion environment at 1400 degree celsius.
引用
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页数:14
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