Influences of SiC infiltration and coating on compressive mechanical behaviours of 2D C/SiC composites up to 1600 °C at wide-ranging strain rates. Issue 9 (August 2022)

• Record Type: Journal Article
• Authors: Zhang, Chao; Guan, Tianhao; Ren, Tengfei; Zhang, Xinyue; Wang, Bo; Zhou, Xi; Suo, Tao
• Is Part Of: Journal of the European Ceramic Society. Volume 42:Issue 9(2022)
• Page Start: 3787
• Page End: 3801
• Publication Date: 2022-08
• Subjects: 2D C/SiC composite -- Compressive mechanical behaviour -- SiC coating -- Oxidation damage -- High strain rate; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2022.02.042
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: The influences of the SiC infiltration and coating on the compressive mechanical behaviours of 2D C/SiC composites were determined up to 1600 °C at 0.001 and 1000/s strain rates in argon and air. In addition, the failure mechanisms responsible for the compressive mechanical behaviours were elucidated through in-situ observation and micro-analysis-based methods. The 2D C/SiC composite compressive strength was highly sensitive to temperature, loading rate, and oxidation, and was enhanced by the change in the thermal residual stress and decreased by oxidation. In argon, because of the extra infiltrated SiC matrix, SiC treated 2D C/SiC specimens exhibited higher compressive strengths and lower strain rate sensitivity factors than SiC untreated 2D C/SiC specimens. The SiC coating effectively improved the oxidation resistance of the 2D C/SiC composites in air, regardless of the temperature, strain rate, and oxidative damage-which depends on SiC coating, strain rate, and temperature.