OXIDATION OF MOSI2-BASED COMPOSITES

被引：106
|
作者：
COOK, J
KHAN, A
LEE, E
MAHAPATRA, R
机构：
[1] Naval Air Warfare Center, Warminster
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1992年 / 155卷 / 1-2期
关键词：
D O I：
10.1016/0921-5093(92)90325-U
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The oxidation behavior of MoSi2-based composites reinforced with 30 vol.% TiB2, ZrB2, HfB2 or SiC were tested under isothermal and cyclic conditions at temperatures from 500 to 1500-degrees-C. The effects of thermal cycling on subsequent pesting behavior were studied. A second series of cyclic oxidation and pesting tests was then performed on MoSi2 composites containing from 15 to 45 vol.% TiB2 or SiC, in order to determine the effects of reinforcement volume fraction and porosity on oxidation behavior. Oxidation kinetics of the composites under static pesting (500-degrees-C) conditions and cyclic (1200-degrees-C peak temperature) conditions were studied. Scanning electron microscopy analyses were performed to determine the structures and compositions of the oxide layers formed under various test conditions.
引用
收藏
页码：183 / 198
页数：16
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