The ablation and mechanical behaviors of C/(SiC-ZrC)n multi-layer structure matrix composites by chemical vapor infiltration. Issue 10 (August 2022)

• Record Type: Journal Article
• Authors: Feng, Tao; Shi, Xinhao; Hou, Wanbo; Tong, Mingde; Li, Hejun; Lin, Hongjiao; Wen, Shifeng
• Is Part Of: Journal of the European Ceramic Society. Volume 42:Issue 10(2022)
• Page Start: 4133
• Page End: 4143
• Publication Date: 2022-08
• Subjects: Isothermal chemical vapor infiltration -- Ultra-high temperature ceramics -- Multi-layer structural matrix -- Ablation -- Flexural Strength; 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.2022.04.026
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: Continuous carbon fiber reinforced (SiC-ZrC)n multi-layer structural matrix composites were prepared by isothermal chemical vapor infiltration method. The microstructure, bending and ablation behavior of the composites with different number (n, n = 1, 2, 4) of SiC-ZrC layer were studied. The fracture morphology was step-like fracture. With the increase of n, the number of interfaces doubled, benefiting that the cracks kept deflecting and branching at the interface to consume lots of energy. The bending strength increased from 127.63 MPa (n = 1) to 276.85 MPa (n = 4). After ablation, among the prepared composites, C/(SiC-ZrC)4 composite not only had the highest residual bending strength (169 MPa), but also had the best ablation resistance, which the mass and linear ablation rates were 1.17 ± 0.19 mg/s and 7.50 ± 0.56 µm/s, respectively.