Journal of Inorganic Materials ›› 2021, Vol. 36 ›› Issue (10): 1103-1110.DOI: 10.15541/jim20210091

Special Issue: 【结构材料】陶瓷基复合材料

• RESEARCH LETTER • Previous Articles     Next Articles

Optimizing Microstructure and Properties of SiCf/SiC Composites Prepared by Reactive Melt Infiltration

ZHANG Junmin1,2,3(), CHEN Xiaowu1,2(), LIAO Chunjin1,2, GUO Feiyu1,2,3, YANG Jinshan1,2, ZHANG Xiangyu1,2, DONG Shaoming1,2()   

  1. 1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
    2. Structural Ceramics and Composites Engineering Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
    3. School of Physical Science and Technology, Shanghai Tech University, Shanghai 200031, China
  • Received:2021-02-09 Revised:2021-03-24 Published:2021-10-20 Online:2021-04-05
  • Contact: CHEN Xiaowu, lecturer. E-mail: xwchen@mail.sic.ac.cn; DONG Shaoming, professor. E-mail: smdong@mail.sic.ac.cn
  • About author:ZHANG Junmin(1996–), male, PhD candidate. E-mail: zhangjm2@shanghaitech.edu.cn
  • Supported by:
    National Natural Science Foundation of China(51902328);Science and Technology Commission of Shanghai Muni¬cipality(19ZR1464700);Innovation Academy for Light-duty Gas Turbine, CAS(CXYJJ20-QN-09);Chinese Academy of Sciences(QYZDY-SSW-JSC031);Key Deployment Project of the Chinese Academy of Sciences(ZDRW-CN-2019-01)

Abstract:

Reactive melt infiltration (RMI) is one of the most effective methods to prepare highly dense ceramic matrix composites. The melt infiltration and the formation of composites are mainly determined by the pore structure of preforms. Here, SiC fiber reinforced SiC matrix composites (SiCf/SiC) were prepared by infiltrating Si melt into carbon-contained preforms with various pore structures. Effects of pore structure on the melt infiltration and received SiCf/SiC composites were investigated. The results indicated that the preforms with more homogeneous pore size could lead to more sufficient melt infiltration, and also resulted in fewer residual pores and better mechanical properties in the composites. This study is expected to provide important guidance for the pore structure regulation in the fabrication of RMI-composites.

Key words: SiCf/SiC composites, reactive melt infiltration (RMI), pore structure, microstructure, infiltration kinetics

CLC Number: