Influence of Cr content on high-temperature oxidation behaviour of arc sprayed Ni-Cr coatings

doi:10.1080/09603409.2018.1503441

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	Influence of Cr content on high-temperature oxidation behaviour of arc sprayed Ni-Cr coatings
	Long, Weiyang 1; Li, Jiahui 1; Wu, Yuping 1,2; Hong, Sheng 1,3; Zhang, Jianfeng 1; Qiao, Lei 1
刊名	MATERIALS AT HIGH TEMPERATURES
	2019-05-04
卷号	36 期号:3 页码:187-194
关键词	Arc spraying Ni-Cr coatings high-temperature oxidation protective scale
ISSN号	0960-3409
DOI	10.1080/09603409.2018.1503441
通讯作者	Wu, Yuping(wuyuping@hhu.edu.cn) ; Hong, Sheng(hongsheng1988@126.com)
英文摘要	In this study, the high-temperature oxidation behaviour of arc-sprayed Ni-Cr coatings with high Cr contents of 30, 45 and 50 at.% was investigated in comparison with reference AISI 1020 steel. X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy were utilised to characterise the oxide scales. The oxidation resistance of the steel substrates was found to be enhanced after the application of the Ni-Cr coatings since the oxidation kinetics followed the parabolic law. In addition, the oxidation rate of Ni-50Cr coating was 56.5% lower than that of Ni-30Cr coating, indicating that the oxidation performance of coatings was improved with increasing Cr content. The oxide layers of Ni-Cr coating were found to be a double layer structure protecting the substrate from severely oxidation, which composed of a top layer of NiO and a basal layer of Cr2O3 and NiCr2O4. The surface of Ni-30Cr coating contained lots of multi-angle NiO crystals, while the surface of Ni-50Cr coating contained a dense Cr2O3 structure, suggesting that the growth of NiO crystals was limited due to the large amount of Cr-rich oxides.
资助项目	China Postdoctoral Science Foundation[2018T110435] ; China Postdoctoral Science Foundation[2016M590404] ; National Natural Science Foundation of China[51609067] ; National Natural Science Foundation of China[51579087] ; Opening Project of CAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences[2016NMSAKF03] ; Natural Science Foundation of Jiangsu Province of China[BK20150806] ; Opening Project of Material Corrosion and Protection Key Laboratory of Sichuan Province[2016CL08]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000472115600001
资助机构	China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; Opening Project of CAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences ; Natural Science Foundation of Jiangsu Province of China ; Opening Project of Material Corrosion and Protection Key Laboratory of Sichuan Province
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/134081]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wu, Yuping; Hong, Sheng
作者单位	1.Hohai Univ, Coll Mech & Mat, Nanjing, Jiangsu, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang, Liaoning, Peoples R China 3.Mat Corros & Protect Key Lab Sichuan Prov, Zigong, Peoples R China
推荐引用方式 GB/T 7714	Long, Weiyang,Li, Jiahui,Wu, Yuping,et al. Influence of Cr content on high-temperature oxidation behaviour of arc sprayed Ni-Cr coatings[J]. MATERIALS AT HIGH TEMPERATURES,2019,36(3):187-194.
APA	Long, Weiyang,Li, Jiahui,Wu, Yuping,Hong, Sheng,Zhang, Jianfeng,&Qiao, Lei.(2019).Influence of Cr content on high-temperature oxidation behaviour of arc sprayed Ni-Cr coatings.MATERIALS AT HIGH TEMPERATURES,36(3),187-194.
MLA	Long, Weiyang,et al."Influence of Cr content on high-temperature oxidation behaviour of arc sprayed Ni-Cr coatings".MATERIALS AT HIGH TEMPERATURES 36.3(2019):187-194.