【作者】 张旭； 杨青； 王玉敏； 雷家峰； 杨锐；

【Author】 ZHANG Xu,YANG Qing,WANG Yu-min,LEI Jia-feng,YANG Rui (Institute of Metal Research,Chinese Academy of Science,Shenyang 110016,China)

【机构】 中国科学院金属研究所；

【摘要】 采用磁控溅射先驱丝法制备SiC_f/TC17复合材料,结果表明:复合材料中SiC_f纤维呈近六方排布,纤维与基体之间结合紧密,没有出现空洞;复合材料的室温抗拉强度为1 773 MPa,相比TC17基体提高83.3%;复合材料的拉伸断口宏观上属于脆性断裂,断口处有大量的界面分离、纤维拔出,其中界面分离最容易发生在C层与反应层间的界面处。更多还原

【Abstract】 SiC_f/TC17 composite was prepared by a method of precursor wire with magnetron sputtering.The results show that the fibers combine completely with the base composite and no porosity is detected,and the fibers are arranged nearly forming an hexagonal array.The tensile strength of the composite reaches 1 773 MPa,increased by about 83.3% compared with that of the matrix.Macroscopically,the fracture of the composite is brittle fracture,interface debonding and fibre pull-out are found universally and the interface debondmg most easily occurs at the interface between the C-coating layer of SiC fibre and interfacial reaction layer.更多还原