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题名: Enhanced corrosion resistance in Fe-based amorphous coatings through eliminating Cr-depleted zones
作者: Wu, J;  Zhang, SD;  Sun, WH;  Gao, Y;  Wang, JQ
发表日期: 2018-5-15
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.
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Recommended Citation:
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.

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