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Fabrication of 2D C/ZrC-SiC composite and its structural evolution under high-temperature treatment up to 1800 °C
被引:79
|作者:
Li, Houbu
[1
]
Zhang, Litong
[1
]
Cheng, Laifei
[1
]
Wang, Yiguang
[1
]
机构:
[1] Northwestern Polytech Univ, Natl Key Lab Thermostruct Composite Mat, Xian 710072, Peoples R China
关键词:
Precursors: organic;
Composites;
Whiskers;
Structural evolution;
SILICON-CARBIDE WHISKERS;
MATRIX COMPOSITES;
SLURRY INFILTRATION;
THERMAL-STABILITY;
C/SIC COMPOSITES;
GROWTH-MECHANISM;
FIBER;
POLYCARBOSILANE;
D O I:
10.1016/j.ceramint.2009.03.030
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:
Two-dimensional C/ZrC-SiC composites were fabricated by chemical vapor infiltration (CVI) process combined with a modified polymer infiltration and pyrolysis (PIP) method. Two kinds of ZrC slurries (ZrC aqueous slurry and ZrC/polycarbosilane slurry) were employed to densify composites before the PIP process. The as-produced C/ZrC-SiC composites exhibited better mechanical properties than the C/SiC composites densified only by CVI and PIP process. Structural evolution for C/ZrC-SiC composites treated in the range 1200-1800 degrees C mainly consisted of the change of SiC whiskers and the decomposition of polymer derived ceramic. (C) 2009 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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页码:2831 / 2836
页数:6
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