Enhanced corrosion resistance in Fe-based amorphous coatings through eliminating Cr-depleted zones

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	Enhanced corrosion resistance in Fe-based amorphous coatings through eliminating Cr-depleted zones
	Wu, J; Zhang, SD; Sun, WH; Gao, Y; Wang, JQ; Wang, JQ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
刊名	CORROSION SCIENCE
	2018-05-15
卷号	136 页码:161-173
关键词	Metallic-glass Coatings Stainless-steel Surface Distributions Erosion-corrosion Pitting Corrosion Wear-resistance Heat-treatment Sam 1651 Behavior Alloys
ISSN号	0010-938X
英文摘要	Localised Cr depletion caused by defects in Fe-based amorphous coatings, e.g. pores, oxides and crystalline phases, is thought to be the dominating reason for decreasing corrosion resistance in the coatings. An electrochemical polarisation treatment was used to selectively dissolve Cr-depleted zones in the coatings. The corrosion behaviour of the coatings was studied by potentiodynamic and potentiostatic polarisation and electrochemical impedance spectroscopy in 3.5 wt.% NaCl solution. With the elimination of Cr-depleted zones the corrosion resistance of the coatings was enhanced, with an order of magnitude reduction in the passive current density together with the improvement of passive film stability.; Localised Cr depletion caused by defects in Fe-based amorphous coatings, e.g. pores, oxides and crystalline phases, is thought to be the dominating reason for decreasing corrosion resistance in the coatings. An electrochemical polarisation treatment was used to selectively dissolve Cr-depleted zones in the coatings. The corrosion behaviour of the coatings was studied by potentiodynamic and potentiostatic polarisation and electrochemical impedance spectroscopy in 3.5 wt.% NaCl solution. With the elimination of Cr-depleted zones the corrosion resistance of the coatings was enhanced, with an order of magnitude reduction in the passive current density together with the improvement of passive film stability.
学科主题	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
资助机构	National Key Research and Development Program of China [2016YFB1100204]; National Natural Science Foundation of China [51471166, 51131006, 51701214]
公开日期	2018-06-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79305]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, JQ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Wu, J,Zhang, SD,Sun, WH,et al. Enhanced corrosion resistance in Fe-based amorphous coatings through eliminating Cr-depleted zones[J]. CORROSION SCIENCE,2018,136:161-173.
APA	Wu, J,Zhang, SD,Sun, WH,Gao, Y,Wang, JQ,&Wang, JQ .(2018).Enhanced corrosion resistance in Fe-based amorphous coatings through eliminating Cr-depleted zones.CORROSION SCIENCE,136,161-173.
MLA	Wu, J,et al."Enhanced corrosion resistance in Fe-based amorphous coatings through eliminating Cr-depleted zones".CORROSION SCIENCE 136(2018):161-173.