Effect of additives on mechanical properties of oxidation-resistant carbon/carbon composite fabricated by rapid CVD method

被引：30
|
作者：
Luo, RY [1 ]
Yang, Z
Li, LF
机构：
[1] Beijing Univ Aeronaut & Astronaut, Coll Sci, Beijing 100083, Peoples R China
[2] Northwestern Polytech Univ, Dept Mat Sci & Engn, Xian 710072, Peoples R China
来源：
CARBON | 2000年 / 38卷 / 15期
关键词：
carbon/carbon composites; chemical vapor deposition; mechanical properties;
D O I：
10.1016/S0008-6223(00)00084-1
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The optimum composition of additives was obtained by the orthogonal design test method for oxidation-resistant carbon/carbon composites (C/C) fabricated by the rapid CVD method. The effect of additives on mechanical properties was examined. The additives used in this test included silicon carbide, silicon nitride, and metal borides. Additives doped into the matrix of C/C increase not only the initial oxidation temperature from 400 to 657 degreesC (64%), but also its flexural strength from 121 to 254 MPa (110%), and flexural modulus from 25 to 45 GPa (96%). The increase of mechanical properties is considered to be due to the formation of a metallic carbon-boron compound in the microstructure. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：2109 / 2115
页数：7
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