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

页码：183 / 198

页数：16