Journal of Inorganic Materials ›› 2020, Vol. 35 ›› Issue (12): 1327-1332.DOI: 10.15541/jim20200138

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Damage Characteristics of 2D C/SiC-ZrC Composites under Low Velocity Impact

PI Huilong1(),ZHANG Baopeng2(),YU Xinmin2,LIU Wei2,JIN Xin2   

  1. 1. Science and Technology on Thermostructure Composite Materials Laboratory, Northwestern Polytechnical University, Xi’ an 710072, China
    2. Aerospace Institute of Advanced Materials & Processing Technology, Beijing 100074, China
  • Received:2020-03-17 Revised:2020-04-13 Online:2020-12-20 Published:2020-05-10
  • Contact: ZHANG Baopeng, engineer. E-mail: bhzbp1129@buaa.edu.cn
  • About author:PI Huilong(1988–), male, senior engineer. E-mail: 694448668@qq.com

Abstract:

The effects of impact energy on damage characteristics and tensile properties of 2D C/SiC-ZrC composites were studied by low-speed impact, post-impact tensile tests and the CT scanning methods. The results indicated that C/SiC-ZrC composites had a high impact damage tolerance. The damage state of the composites in the energy range of 15-24 J was mainly shown as penetrating damage. When the impact energy increased within the range of 15-24 J, the nominal tensile strength of C/SiC-ZrC composites reduced slowly, with a maximum decrease of around 25%. The impact mainly caused lamination and fiber fracture damage near the impact areas. However, the impact damage was not observed out of the impact areas.

Key words: C/SiC-ZrC, ceramic matrix composites, impact, residual tensile strength

CLC Number: