Microstructure Evolution of Plasma- Sprayed MoSi2 Coating at RT-1200 degrees C in Air

doi:10.1007/s11666-018-0730-2

	Microstructure Evolution of Plasma- Sprayed MoSi2 Coating at RT-1200 degrees C in Air
	Niu, Yaran ; Zhai, Cuihong ; Wang, Guocheng 1; Huang, Liping ; Zheng, Xuebin ; Ding, Chuanxian
刊名	JOURNAL OF THERMAL SPRAY TECHNOLOGY
	2018
卷号	27 期号:6 页码:938
关键词	heat treatment microstructure evolution MoSi2 coating oxidation vacuum plasma spray
ISSN号	1059-9630
DOI	10.1007/s11666-018-0730-2
英文摘要	In this work, the phase composition and microstructure evolution of vacuum plasma-sprayed MoSi2 coating between room temperature and 1200 degrees C in air was evaluated and characterized. The results showed that hexagonal MoSi2 (h-MoSi2) became the main phase in the deposited coating, which remained even after 50 h oxidation at 500 degrees C, exhibiting excellent thermal stability. MoO3 bundles and SiO2 clusters were generated by consuming tetragonal MoSi2 (t-MoSi2) after 1 h, and white powders formed on the coating's surface after 10-h exposure to air at 500 degrees C. Most h-MoSi2 transformed to t-MoSi2 at 800 degrees C; moreover, a protective silica layer formed on the coating surface. Similar phenomenon was observed for the coating exposed to 1000 degrees C where grain growth also occurred. Vacuum heat treatment at 900 degrees C effectively improved the thermal stability of the MoSi2 coating. The formation of silica layer alleviated negative effects of structural defects and helped the MoSi2 coating serve as a protective coating for varied substrates.
学科主题	Materials Science, Coatings & Films
出版者	SPRINGER
WOS记录号	WOS:000441984900003
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/24754]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Coating Mat CAS, Shanghai 200050, Peoples R China 2.Chinese Acad Sci, Shenzhen Inst Adv Technol, Res Ctr Human Tissues & Organs Degenerat, Shenzhen 518055, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Niu, Yaran,Zhai, Cuihong,Wang, Guocheng,et al. Microstructure Evolution of Plasma- Sprayed MoSi2 Coating at RT-1200 degrees C in Air[J]. JOURNAL OF THERMAL SPRAY TECHNOLOGY,2018,27(6):938, 948.
APA	Niu, Yaran,Zhai, Cuihong,Wang, Guocheng,Huang, Liping,Zheng, Xuebin,&Ding, Chuanxian.(2018).Microstructure Evolution of Plasma- Sprayed MoSi2 Coating at RT-1200 degrees C in Air.JOURNAL OF THERMAL SPRAY TECHNOLOGY,27(6),938.
MLA	Niu, Yaran,et al."Microstructure Evolution of Plasma- Sprayed MoSi2 Coating at RT-1200 degrees C in Air".JOURNAL OF THERMAL SPRAY TECHNOLOGY 27.6(2018):938.