期刊
CERAMICS INTERNATIONAL
卷 40, 期 1, 页码 399-408出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2013.06.015
关键词
Composites; Fibers; Interfaces; Mechanical properties
资金
- Natural Science Foundation of China [NSFC50672076]
- Doctoral Starting up Foundation of Xi'an University of Architecture and Technology in China [RC1039]
A three-dimensional needled carbon fiber integrated felt was used as the preform for SiC or B4C modified carbon/carbon (C/C) composite: C/C-B4C or C/C-SiC which was prepared through unidirectional pressure slurry infiltration-filtration followed by chemical vapor infiltration. There were four kinds of interface microstructure modes between ceramic filler particles and pyrolytic carbon (PyC) matrix: enwrapping, encircling, embedding and infilling. For C/C-B4C, enwrapping, encircling and embedding were the main modes. For C/C-SiC, embedding was the main one. The addition of ceramic filler complicated some fiber/matrix interfaces, forming composite interface layers and dual interface layers. There were three kinds of characteristic fiber/matrix interfaces: (fiber/filler/PyC)(n)/PyC, fiber/(filler/PyC)/PyC, fiber/filler/PyC. The flexure strength of C/C was 98 MPa, whereas those of C/C-B4C and C/C-SiC were 200 and 140 MPa, respectively. The addition of ceramic filler not only increased the bonding strength of some fiber/matrix interface, but also toughened the PyC matrix. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据