Effect of in situ grown SiC nanowires on microstructure and mechanical properties of C/SiC composites

被引：50

作者：

Pei, Bingbing ^{[1
,2
]}

Zhu, Yunzhou ^{[1
]}

Yuan, Ming ^{[1
]}

Huang, Zhengren ^{[1
]}

Li, Yinsheng ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100039, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Silicon carbide nanowires; C/SiC composites; Polymer impregnation and pyrolysis; Polycarbosilane;

D O I：

10.1016/j.ceramint.2013.10.077

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Hexagonal-shaped SiC nanowires were in situ formed in C/SiC composites with ferrocene as catalyst in the densification process of polymer impregnation and pyrolysis. The effect of SiC nanowires on microstructure and properties of the composites were studied. The results show that the in situ formed SiC nanowires were hexagonal, mostly with diamer of about 250 nm, and grew by the vapor-liquid-solid (VLS) mechanism. The C/SiC composite with nanowires shows higher bulk density and flexural strength than the one with no SiC nanowires, and the high temperature flexural strength behavior of C/SiC composites with SiC nanowires was evaluated. Crown Copyright (c) 2013 Published by Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：5191 / 5195

页数：5

共 19 条

[1] Toughening by SiC Nanowires in a Dense SiC-Si Ceramic Coating for Oxidation Protection of C/C Composites [J].