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Spontaneous reaction formation of Cr23C6 diffusion barrier layer between nanocrystalline MCrAlY coating and Ni-base superalloy at high temperature
Ren, Pan; Zhu, Shenglong; Wang, Fuhui; slzhu@imr.ac.cn
2015
Source PublicationCORROSION SCIENCE
ISSN0010-938X
Volume99Pages:219-226
AbstractA nanocrystalline NiCrAlYHfSi coating was prepared by magnetron sputtering. The coating after post-annealing comprised matrix gamma'-Ni3Al and alpha-Cr precipitates. No coating spallation was observed after 100 cycles of 1000-25 degrees C water-quenching test. A continuous Cr23C6 interlayer between the coating and the substrate was spontaneously formed during high temperature exposure, and exhibited good performance in suppressing the coating/substrate interdiffusion. The alpha-Cr precipitates in the coating disappeared gradually as Cr in the coating was consumed to form the Cr23C6 interlayer. Its growth rates can be fitted into a law controlled by two completing processes: a parabolic growth and a linear decomposition. (C) 2015 Elsevier Ltd. All rights reserved.
description.department[ren, pan ; zhu, shenglong ; wang, fuhui] chinese acad sci, inst met res, dept high temp corros & protect, shenyang 110016, peoples r china
KeywordMetal Coatings Superalloys Oxidation
Funding OrganizationNational Key Basic Research Program of China (973 Program) [2012CB625100]; National Nature Science Foundation of China [51231001]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75129
Collection中国科学院金属研究所
Corresponding Authorslzhu@imr.ac.cn
Recommended Citation
GB/T 7714
Ren, Pan,Zhu, Shenglong,Wang, Fuhui,et al. Spontaneous reaction formation of Cr23C6 diffusion barrier layer between nanocrystalline MCrAlY coating and Ni-base superalloy at high temperature[J]. CORROSION SCIENCE,2015,99:219-226.
APA Ren, Pan,Zhu, Shenglong,Wang, Fuhui,&slzhu@imr.ac.cn.(2015).Spontaneous reaction formation of Cr23C6 diffusion barrier layer between nanocrystalline MCrAlY coating and Ni-base superalloy at high temperature.CORROSION SCIENCE,99,219-226.
MLA Ren, Pan,et al."Spontaneous reaction formation of Cr23C6 diffusion barrier layer between nanocrystalline MCrAlY coating and Ni-base superalloy at high temperature".CORROSION SCIENCE 99(2015):219-226.
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