Interfacial regulation and fracture mechanism of Al–Si/SiC composites infiltrated under super-gravity field

• DOI: 10.1016/j.jmrt.2023.11.107
• Publication Date: 2023-11-16T22:51:07Z
• Authors: Chuandong Wu; Yuehui Lu; Penghui Zhang; Tao Guo; Jiaming Wang; Yingyu Li; Shuai Shen; Tian Yang; Zhanghua Gan; Guoqiang Luo; Jing Liu
• Keywords: Penetration (warfare)

We reported a novel method to prepare Al–Si/SiC composites infiltrated under super-gravity field without Mg addition. Noted that centrifugal force acted as the main driving overcome penetration resistance, making it feasible obtain composite with high relative density (≥99.3 %). The interfacial reaction between Al and SiC was retarded by Si addition field. Interestingly, rod-like eutectic detected at Al–SiC interface semi-continuous distribution, leading excellent bending strength (342.6 ± 1.0 MPa), enhanced thermal conductivity (173 W/m K 373 K), relatively low coefficient of expansion (8.90 × 10−6 K−1 ranged from 323 K). regulation fracture mechanism were discussed in details.