Fabrication and performance of mini SiC/SiC composites with an electrophoresis-deposited BN fiber/matrix interphase

作者：Xu, Bin; Yang, Huiyong^*; Luo, Ruiying; Wang, Lianyi; Huang, Juntong; Chen, Dian

来源：Journal of the European Ceramic Society, 2022, 42(5): 1904-1911.

DOI：10.1016/j.jeurceramsoc.2022.01.021

• Mini SiC
• SiC
• BN interphase
• Tensile properties
• Oxidation resistance

The feasibility of fabricating a BN matrix/fiber interphase of SiC/SiC composites via electrophoresis deposition (EPD) was investigated based on the simplicity and non-destructiveness of the process and the excellent inter-facial modification effects of BN. The BN suspension and SiC fiber surface properties were both adjusted to generate suitable conditions for the EPD process of the BN interphase. Next, the deposition dynamics and mechanism were studied under different deposition voltages and time, and the relationship between the depo-sition morphology of the BN interphase and mechanical properties of the fabricated mini SiC/SiC composites were also discussed. After oxidation at high temperature (600-1000 celcius), the mechanical properties of the mini SiC/SiC composites were studied to verify the oxidation resistance effect of the EPD-deposited BN interphase, whose oxidation resistance mechanism was briefly analyzed as well.

• 单位
  北京航空航天大学; 南昌航空大学