新型炭材料2004，Vol.19Issue(4)：289-292,4.
压力梯度CVI工艺制备2D炭/炭复合材料的弯曲断裂行为
Flexural behavior of 2D carbon-carbon composites fabricated by pressure gradient CVI
摘要
Abstract
The flexural behavior of 2D carbon-carbon (C/C) composites fabricated by CVI was investigated using a three-point bend test, and the fracture surface and interface of the composites were observed by SEM. By analyzing the effects of the fiber-matrix interface and the sample density on the mechanical behavior, it is revealed that the fracture modes of 2D C/C composites change from shearing and delamination failure to tensile breakage with increasing densification degree. The results also show that the density has a great impact on the strength and modulus rather than the flexural deflection. In fact, the flexural deflection of 2D C/C composites depends on the performance of the pyrocarbon and the interfacial bonding between fibers and matrix.关键词
炭/炭复合材料/化学气相浸渗/弯曲性能Key words
Carbon/carbon composites/Chemical vapor infiltration/Flexural properties分类
通用工业技术引用本文复制引用
薛辉,李贺军,侯向辉,李克智,韩红梅..压力梯度CVI工艺制备2D炭/炭复合材料的弯曲断裂行为[J].新型炭材料,2004,19(4):289-292,4.基金项目
国家杰出青年基金(50225210)国家自然科学基金(50372050) （50225210）
