ISOTHERMAL OXIDATION BEHAVIOR OF A NiCoCrAlYSiB plus AlSiY GRADIENT COATING

doi:10.3724/SP.J.1037.2010.00649

IMR OpenIR

	ISOTHERMAL OXIDATION BEHAVIOR OF A NiCoCrAlYSiB plus AlSiY GRADIENT COATING
	Wang Weixin 1,2; Jiang Sumeng 1; Wei Guangzhi 2; Ma Jun 1; Gong Jun 1; Sun Chao 1
通讯作者	Sun Chao(csun@imr.ac.cn)
	2011-05-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	47 期号:5 页码:578-586
摘要	Conventional NiCoCrAlYSiB coating and (NiCoCrAlYSiB+AlSiY) gradient coating were prepared by using arc ion plating (ATP) on the Ni base single crystal superalloy substrate. Comparative studies of the morphology and microstructure together with high temperature oxidation behaviors at 1000, 1100 and 1150 C for the two different coatings were investigated. The results show that after vacuum annealing, the conventional coating is mainly composed of general gamma'/gamma and a small quantity of beta-NiAl dispersed in gamma'/gamma while the outer layer of the gradient coating consists of beta-NiAl and dispersed alpha-Cr and Cr3Si in beta-NiAl and the inner layer consists of Cr-rich phases plus minor beta-NiAl. The conventional coating has excellent oxidation resistance only at 1000 degrees C, while it degraded rapidly at 1100 degrees C and 1150 degrees C, on which surface spinel formation was observed; however, the gradient coating has more excellent oxidation resistance than the conventional one at all the three temperatures. After oxidation for 300 h at 1100 degrees C, there still exists a great amount of beta-NiAl, and even after oxidation for 300 h at 1150 degrees C, Al content is higher than 8% (mass fraction), in which a small amount of beta-NiAl and supersaturated gamma'/gamma insure the formation and self repair of alumina.
关键词	gradient coating arc ion plating isothermal oxidation interdiffusion
DOI	10.3724/SP.J.1037.2010.00649
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000291845800011
出版者	SCIENCE PRESS
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/107000
专题	中国科学院金属研究所
通讯作者	Sun Chao
作者单位	1.Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China 2.Guizhou Univ, Mat & Met Coll, Guiyang 550003, Peoples R China
推荐引用方式 GB/T 7714	Wang Weixin,Jiang Sumeng,Wei Guangzhi,et al. ISOTHERMAL OXIDATION BEHAVIOR OF A NiCoCrAlYSiB plus AlSiY GRADIENT COATING[J]. ACTA METALLURGICA SINICA,2011,47(5):578-586.
APA	Wang Weixin,Jiang Sumeng,Wei Guangzhi,Ma Jun,Gong Jun,&Sun Chao.(2011).ISOTHERMAL OXIDATION BEHAVIOR OF A NiCoCrAlYSiB plus AlSiY GRADIENT COATING.ACTA METALLURGICA SINICA,47(5),578-586.
MLA	Wang Weixin,et al."ISOTHERMAL OXIDATION BEHAVIOR OF A NiCoCrAlYSiB plus AlSiY GRADIENT COATING".ACTA METALLURGICA SINICA 47.5(2011):578-586.