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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.
2018-05-15
发表期刊CORROSION SCIENCE
ISSN0010-938X
卷号136页码:161-173
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.
部门归属[wu, j. ; zhang, s. d. ; sun, w. h. ; wang, j. q.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china ; [wu, j.] univ sci & technol china, sch mat sci & engn, shenyang 110016, liaoning, peoples r china ; [gao, y.] northeastern univ, minist educ, key lab electromagnet proc mat, shenyang 110819, liaoning, peoples r china
关键词Metallic-glass Coatings Stainless-steel Surface Distributions Erosion-corrosion Pitting Corrosion Wear-resistance Heat-treatment Sam 1651 Behavior Alloys
学科领域Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助者National Key Research and Development Program of China [2016YFB1100204]; National Natural Science Foundation of China [51471166, 51131006, 51701214]
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/79305
专题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.
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