硅酸盐学报2008，Vol.36Issue(2)：144-149,6.
三维针刺C/SiC复合材料的结构特征和力学性能
MICROSTRUCTURE AND MECHANICAL PROPERTIES OF THREE-DIMENSIONAL NEEDLED C/SiC COMPOSITE
摘要
Abstract
A three-dimensional needled carbon fiber reinforced silicon carbide (3D needled C/SiC) ceramic matrix composite in the through-the-thickness direction was fabricated by the chemical vapor infiltration process. The resulting composite has a bulk density of 2.15 g/cm3 and an open porosity of 16%. The adjacent layers for thickness direction in the 3D needled C/SiC composite are interlinked perfectly together by needling fibers and this greatly improves the interlaminar shear strength of the composite. The interlaminar shear strength of the 3D needled C/SiC composite is 95 MPa (improved 171.4% compared with 2D C/SiC composite, 35 MPa),and the tensile strength and flexural strength of the 3D needled C/SiC composite are 159 MPa and 350 MPa, respectively. The composite exhibits a non-brittle failure behavior including propagation and deflection of cracks, fracture and pullout of fibers.关键词
三维针刺/碳/碳化硅复合材料/结构特征/力学性能Key words
three dimensional needled/ carbon fiber reinforced silicon carbide composites/ microstructure/ mechanical property分类
通用工业技术引用本文复制引用
郭友军,聂景江,徐永东,成来飞..三维针刺C/SiC复合材料的结构特征和力学性能[J].硅酸盐学报,2008,36(2):144-149,6.基金项目
国家自然科学基金(50672076)资助项目. （50672076）
