Formation mechanism of laser-clad gradient thermal barrier coatings

IMR OpenIR

	Formation mechanism of laser-clad gradient thermal barrier coatings
	G. F. Chen; Z. C. Feng; Y. Liang
	2000
发表期刊	Transactions of Nonferrous Metals Society of China
ISSN	1003-6326
卷号	10 期号:1 页码:92-93
摘要	The stratified gradient thermal barrier coatings (TBCs) were obtained by laser cladding of ZrO2 and NiCoCrAlY mixture powder. The coatings were four-layer structure: cellular dendritic ZrO2, dense ZrO2, Ni-based alloy bonding coating and substrate. The formation of the stratified TBCs was attributed to the insolubility of ZrO2 in the Ni-based alloy and the lower density of ZrO2 than that of Ni-based alloy when both of them were in melted condition. The formation of two-layered ZrO2 was related to the presence of Al in the Ni-based alloy, i) Al could be preoxidized into Al2O3 that could be segregated in the grain boundaries of ZrO2 during solidification process; ii) Al could be partially preoxidized into Al2O3, then Al and Al2O3 could be segregated simultaneously at the grain boundaries of ZrO2 during solidification process. Two formation processes were presented.
部门归属	chinese acad sci, inst met res, shenyang 110015, peoples r china.
关键词	Laser Cladding Thermal Barrier Coatings Formation Mechanisms
URL	查看原文
WOS记录号	WOS:000085612200024
引用统计	被引频次：2[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/321006/36979
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. F. Chen,Z. C. Feng,Y. Liang. Formation mechanism of laser-clad gradient thermal barrier coatings[J]. Transactions of Nonferrous Metals Society of China,2000,10(1):92-93.
APA	G. F. Chen,Z. C. Feng,&Y. Liang.(2000).Formation mechanism of laser-clad gradient thermal barrier coatings.Transactions of Nonferrous Metals Society of China,10(1),92-93.
MLA	G. F. Chen,et al."Formation mechanism of laser-clad gradient thermal barrier coatings".Transactions of Nonferrous Metals Society of China 10.1(2000):92-93.