Hot corrosion behavior of AIP NiCoCrAlY(SiB) coatings on nickel base superalloys

doi:10.1016/j.surfcoat.2003.12.020

IMR OpenIR

	Hot corrosion behavior of AIP NiCoCrAlY(SiB) coatings on nickel base superalloys
	Wang, QM; Wu, YN; Ke, PL; Cao, HT; Gong, J; Sun, C; Wen, LS
通讯作者	Wang, QM(qmwang@imr.ac.cn)
	2004-09-01
发表期刊	SURFACE & COATINGS TECHNOLOGY
ISSN	0257-8972
卷号	186 期号:3 页码:389-397
摘要	NiCoCrAlY(SiB) coatings were deposited on the nickel base superalloys DZ125 and DSM11 by arc ion plating (AIP). The corrosion behavior of the bare alloys and the protective coatings in molten 75 wt.% Na2SO4 + 25 wt.% K2SO4 at 900degreesC in air was tested for 90 h. The results indicated that DZ125 superalloy suffered catastrophic corrosion after 5 It exposure and a thick porous oxide scale (500-600 mum) interspersed with Ni3S2 and alloy particles formed on the alloy. For the Cr-rich DSM11 alloy, a mild corrosion attack happened, but severe internal Al-rich oxidation occurred inside the alloy. With NiCoCrAlY and NiCoCrAlYSiB coatings, the hot corrosion resistance of the systems was improved due to the formation of an alpha-Al2O3 scale. The hot corrosion resistance of the coatings with additions of Si and B can be improved by promoting the growth of a dense and continuous alpha-Al2O3 layer in the initial stage and improving the adherence of the oxide scale to the coating in the subsequent hot corrosion process. The hot corrosion degradation mechanism of the NiCoCrAlYSiB coatings and the influence of the substrate materials on the behavior of the whole system were also investigated. (C) 2004 Elsevier B.V. All rights reserved.
关键词	\NiCoCrAlY NiCoCrAlYSiB arc ion plating AIP hot corrosion molten sulfate
DOI	10.1016/j.surfcoat.2003.12.020
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Coatings & Films ; Physics, Applied
WOS记录号	WOS:000223408400008
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/81909
通讯作者	Wang, QM
作者单位	Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang, QM,Wu, YN,Ke, PL,et al. Hot corrosion behavior of AIP NiCoCrAlY(SiB) coatings on nickel base superalloys[J]. SURFACE & COATINGS TECHNOLOGY,2004,186(3):389-397.
APA	Wang, QM.,Wu, YN.,Ke, PL.,Cao, HT.,Gong, J.,...&Wen, LS.(2004).Hot corrosion behavior of AIP NiCoCrAlY(SiB) coatings on nickel base superalloys.SURFACE & COATINGS TECHNOLOGY,186(3),389-397.
MLA	Wang, QM,et al."Hot corrosion behavior of AIP NiCoCrAlY(SiB) coatings on nickel base superalloys".SURFACE & COATINGS TECHNOLOGY 186.3(2004):389-397.