Effect of Scratching of Coating Surface on the Electrochemical Behavior of PVD Al-Mg-Si Coated Steel

被引：1

作者：

Hariyanti ^{[1
]}

El-Mahdy, Gamal A. ^{[2
]}

Nishikata, Atsushi ^{[1
]}

Tsuru, Tooru ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Met & Ceram Sci, Meguro Ku, Tokyo 1528552, Japan

[2] Helwan Univ, Dept Chem, Fac Sci, Ain Helwan, Egypt

来源：

ELECTROCHEMISTRY | 2012年 / 80卷 / 04期

关键词：

PVD; Polarization; Passivity; OCP; CORROSION; ALUMINUM; CHLORIDE;

D O I：

10.5796/electrochemistry.80.214

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Effect of scratching of coating surface on the electrochemical behavior of PVD Al-Mg-Si coated steel has been investigated using an open circuit potential (OCP), anodic polarization and galvanic couple test. The OCP monitoring showed a fast ennoblement of OCP then attained a steady state value during the last stage of monitoring. There were two types of corrosion products of scratched coating that protected from continuous corrosion and act as self-healing. The first is passive film that arises from the adjacent coating surface on both sides of scratched area and covering the underlying steel. The second is corrosion product produced by the corrosion of steel on scratched area. (C) The Electrochemical Society of Japan, All rights reserved.

引用

页码：214 / 217

页数：4

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