Effect of Nb Additions on the High-Temperature Performances of NiFe2O4 Spinel Coatings Fabricated on Ferritic Stainless Steel

doi:10.1007/s11085-020-09967-6

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	Effect of Nb Additions on the High-Temperature Performances of NiFe2O4 Spinel Coatings Fabricated on Ferritic Stainless Steel
	You, Pengfei 1,2,3; Zhang, Xue 2; Zhang, Hailiang 2,3; Yang, Xiaoguang 2; Zeng, Chaoliu 2
刊名	OXIDATION OF METALS
	2020-03-28
卷号	93 期号:2021-05-06 页码:18
关键词	Interconnect NiFe2O4 Spinel coating Oxidation Area-specific resistance
ISSN号	0030-770X
DOI	10.1007/s11085-020-09967-6
通讯作者	Zhang, Xue(xuezhang@imr.ac.cn)
英文摘要	Ni-Fe alloy coatings with Nb contents of 0, 4.2 at.%, 7.0 at.% and 9.0 at.% were electrodeposited on ferritic stainless steels for intermediate-temperature solid oxide fuel cell (SOFC) interconnect application. The oxidation behavior, scale-growth mechanisms and electrical performances of the Ni-Fe- and NiFe-Nb-coated steels were then investigated in air at 800 degrees C corresponding to the cathode environment of SOFC. It was found that the scales formed are mainly composed of an external NiFe2O4 layer and an inner Cr2O3-rich layer after oxidation, with some Nb-rich oxides also observed for the Nb-containing coatings. Doping 4.2 at.%Nb into the coating decreased the growth rate of Cr2O3 and suppressed the formation of voids at the scale/alloy interface, whereas excess Nb impaired the oxidation resistance of the steel. The Nb addition affects the oxide growth direction by suppressing the cation transport. All the coatings decreased the area-specific resistance (ASR) of the steel, with the NiFe-4.2 at.%Nb-coated sample exhibiting the lowest ASR value. The effects of Nb on the oxidation mechanism and electrical properties of the Ni-Fe-coated steels are discussed.
资助项目	National Natural Science Foundation of China[51601202] ; National Natural Science Foundation of China[51471179]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SPRINGER/PLENUM PUBLISHERS
WOS记录号	WOS:000522007800001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/137836]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, Xue
作者单位	1.Xinjiang Joinworld Co Ltd, 18 Kashi Rd, Xinjiang, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Lab Corros & Protect, 62 Wencui Rd, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, 96 Jinzhai Rd, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	You, Pengfei,Zhang, Xue,Zhang, Hailiang,et al. Effect of Nb Additions on the High-Temperature Performances of NiFe2O4 Spinel Coatings Fabricated on Ferritic Stainless Steel[J]. OXIDATION OF METALS,2020,93(2021-05-06):18.
APA	You, Pengfei,Zhang, Xue,Zhang, Hailiang,Yang, Xiaoguang,&Zeng, Chaoliu.(2020).Effect of Nb Additions on the High-Temperature Performances of NiFe2O4 Spinel Coatings Fabricated on Ferritic Stainless Steel.OXIDATION OF METALS,93(2021-05-06),18.
MLA	You, Pengfei,et al."Effect of Nb Additions on the High-Temperature Performances of NiFe2O4 Spinel Coatings Fabricated on Ferritic Stainless Steel".OXIDATION OF METALS 93.2021-05-06(2020):18.