Oxidation mechanism and resistance of ZrB2-SiC composites

被引：184
|
作者：
Ping Hu [1 ]
Wang Guolin [2 ]
Zhi Wang [1 ]
机构：
[1] Harbin Inst Technol, Ctr Composite Mat, Harbin 150001, Peoples R China
[2] China Aerodynam Res & Dev Ctr, Mian Yang Si Chuan 621000, Peoples R China
来源：
CORROSION SCIENCE | 2009年 / 51卷 / 11期
关键词：
Ceramic; Oxidation; DIBORIDE-SILICON CARBIDE; HIGH-TEMPERATURE; ZIRCONIUM DIBORIDE; AIR; TRANSITION; EVOLUTION; CERAMICS; OXYGEN;
D O I：
10.1016/j.corsci.2009.07.005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The oxidation mechanism of ZrB2-SiC composites was investigated based on a combination of theory and experiments. The oxidation reactions, microstructure evolution, scale stability and temperature limit were examined in our research and a good correspondence was obtained between theoretical predictions and experimental results. Microstructure evolution and stability are significantly dependent on both temperature and composition. SiO2 is thermochemically stable below 1800 degrees C and will lose its protective properties at temperatures above 2300 degrees C. The temperature limit for ZrB2-SiC composites is strongly dependent on the vapor pressure of the gaseous products and volume content of ZrB2. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2724 / 2732
页数：9
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