固体火箭技术Issue(4)：574-577,4.DOI:10.7673/j.issn.1006-2793.2014.04.027
催化剂对C／C复合材料微观结构及弯曲性能的影响
Effect of catalyst on microstructure and flexural properties of C/C composites
摘要
Abstract
C/C composite was prepared by chemical liquid vapor deposition ( CLVD ) at different catalytic conditions and its density was about 1.65g/cm3.The microstructure and flexural properties of the composites were characterized.The results show that the use of catalyst has significant impact on the structure and flexural properties of C/C composites during CLVD . When there is no catalyst added in the precursor,smooth laminar( SL) pyrolytic carbon is formed and the fracture mode is brittle fracture. While Fe is used as catalyst, rough laminar (RL) and smooth laminar pyrolytic carbon structure is obtained.The flexural strength and flexurad modulas of the composites are improved and it shows pseudo plastic fracture.Rough laminar and isotropic (ISO) mixed structure is observed when Ni is added,and the composites show the pseudo plastic fracture behavior while the flexural strength is the same with the condition of nothing used as catalyst.The mixed Ni+Fe catalyst added in the precursor induces rough laminar pyrolytic carbon and the composites exhibit pseudo plastic fracture behavior, and their flexural strength and flexural modulus are improved signifi-cantly.关键词
C/C复合材料/催化剂/组织结构/弯曲强度Key words
C/C composites/catalyst/microstructure/flexural strength分类
航空航天引用本文复制引用
张卫本,郭领军,曹爱芝,李贺军..催化剂对C／C复合材料微观结构及弯曲性能的影响[J].固体火箭技术,2014,(4):574-577,4.基金项目
国家自然科学基金创新群体项目（51221001）；国家自然科学基金面上项目（51222207）；教育部博士点基金（20126102110013）。 （）
