Low-Temperature Oxidation Resistance of Core-Shell Structure MoSi2@SiO2

被引：0
|
作者：
Guo L. [1 ,2 ]
Liu B. [1 ]
Zhang J. [1 ]
Zhang X. [2 ]
Miao C. [1 ]
Wu Y. [1 ]
Du H. [2 ]
机构：
[1] College of Chemistry and Chemical Engineering, Cangzhou Normal University, Cangzhou
[2] Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2022年 / 50卷 / 01期
关键词：
Core-shell structure; Molybdenum disilicide; Oxidation resistance; Preoxidation;
D O I：
10.14062/j.issn.0454-5648.20210297
中图分类号：
学科分类号：
摘要：
To improve the low-temperature oxidation resistance of MoSi2, a core-shell structured MoSi2@SiO2 was prepared by a direct preoxidation method, and the preoxidation conditions, as well as the structure and the low-temperature oxidation resistance of MoSi2@SiO2 composite, were investigated. Results show that the core-shell structured MoSi2@SiO2 can be obtained under preoxidation at 800 ℃ for 1 h. The obtained SiO2 shell is amorphous which is formed due to the non-selective oxidation of MoSi2 and the evaporation of the oxidation product MoO3. The oxidation mass gain rate of MoSi2@SiO2 is <1.6% after isothermal cyclic oxidation at 400-700℃ for 12h. © 2022, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
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页码：270 / 276
页数：6
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