Corrosion behaviour of chromium coatings obtained by direct and reverse pulse plating electrodeposition in NaCl aqueous solution

被引：96

作者：

Imaz, N. ^{[1
]}

Ostra, M. ^{[2
]}

Vidal, M. ^{[2
]}

Diez, J. A. ^{[1
]}

Sarret, M. ^{[3
]}

Garcia-Lecina, E. ^{[1
]}

机构：

[1] IK4 CIDETEC, Surfaces Div, Donastia San Sebastian 20009, Spain

[2] Univ Basque Country, Dept Appl Chem, Donastia San Sebastian 20018, Spain

[3] Univ Barcelona, ELECTRODEP, Dept Phys Chem, E-08028 Barcelona, Spain

来源：

CORROSION SCIENCE | 2014年 / 78卷

关键词：

Metal coatings; EIS; Polarization; SEM; Passive films; Electrodeposited films; HARD CHROMIUM; IMPEDANCE SPECTROSCOPY; STAINLESS-STEEL; CRACK-FREE; WETTABILITY; SURFACES; DEPOSITS;

D O I：

10.1016/j.corsci.2013.10.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work the corrosion performance in chloride media of chromium coatings obtained by direct current (DC) and pulse current (PC1 and PC2) was studied. The electrochemical corrosion behaviour of the layers was characterized by means of potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS) techniques. Additionally, metal cation release and morphological evolution of chromium surfaces as a function of immersion time in chloride solution was analyzed. The obtained results show similar hardness values and a superior corrosion performance of PC2 coatings, which is related to their roughness, morphology, wettability and mainly, their crack absence. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：251 / 259

页数：9

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