Microstructure and oxidation resistance of Mo-Si-B coating on Nb based in situ composites

被引：68
|
作者：
Wu, Jingyan [1 ]
Wang, Wan [1 ]
Zhou, Chungen [1 ]
机构：
[1] Beijing Univ Aeronaut & Astronaut, Dept Mat Sci & Engn, Key Lab Aerosp Mat & Performance, Minist Educ, Beijing 100191, Peoples R China
来源：
CORROSION SCIENCE | 2014年 / 87卷
基金：
中国国家自然科学基金;
关键词：
Intermetallics; Metal coatings; Oxidation; MODIFIED SILICIDE COATINGS; TI; MOSI2; AL; CR; BEHAVIOR;
D O I：
10.1016/j.corsci.2014.07.006
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The development of robust high temperature oxidation resistant coatings for Nb-Si based alloy was evaluated for a Mo-Si-B coating system that was applied by a two step process. It is observed that the coating is composed of an outer layer of MoSi2 containing boride dispersoids and an inner layer of unreacted Mo. The mass gain of substrate and Mo-Si-B coating is 190.08 and 1.28 mg cm(-2) after oxidation at 1250 degrees C in dry air for 100 h, respectively. The good oxidation resistance of the coating is attributed to the formation of a continuous borosilicate glass coverage. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：421 / 426
页数：6
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