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	Cyclic oxidation and diffusion barrier behaviors of oxides dispersed NiCoCrAlY coatings
	Peng, Hui ; Guo, Hongbo ; He, Jian ; Gong, Shengkai
	2010
关键词	Thermal barrier coatings (TBCs) Diffusion barrier Inter-diffusion Oxidation Electron beam-physical vapor deposition (EB-PVD) AL-O-N GAS-TURBINE BLADES EB-PVD BOND COAT BASE SUPERALLOYS VAPOR-DEPOSITION SYSTEM RESISTANCE STABILITY ALLOY
英文摘要	NiCoCrAlY has been widely used as the bond coat material in thermal barrier coatings (TBCs). Inter-diffusion between the bond coat and superalloy could degrade the performance of the coating and the mechanical properties of the superalloy. In this paper, oxide dispersed (OD) NiCoCrAlY coatings were deposited onto superalloy DZ 125 using EB-PVD by introducing oxygen during the deposition process. Cyclic oxidation and inter-diffusion behaviors of the coated specimens at 1323 K were investigated. The OD coating deposited with high level oxygen input effectively prevented outward diffusion of the elements such as Hf and Win superalloy. For the conventional NiCoCrAlY coating, Hf migrated to the coating surfaces and caused accelerated thickening and chipping spallation of TGO. The OD coating with high level oxygen input exhibits an improved cyclic oxidation resistance as compared to the conventional NiCoCrAlY coating and the OD coating with lower level of oxygen input. (C) 2010 Elsevier B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000280471100032&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; SCI(E); 19; ARTICLE; 2; 411-416; 502
语种	英语
出处	SCI
出版者	journal of alloys and compounds
内容类型	其他
源URL	[http://hdl.handle.net/20.500.11897/257520]
专题	数学科学学院
推荐引用方式 GB/T 7714	Peng, Hui,Guo, Hongbo,He, Jian,et al. Cyclic oxidation and diffusion barrier behaviors of oxides dispersed NiCoCrAlY coatings. 2010-01-01.

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