EIS study of a self-repairing microarc oxidation coating

被引：61

作者：

Wen, Lei ^{[1
]}

Wang, Y. M. ^{[1
]}

Liu, Yan ^{[2
]}

Zhou, Y. ^{[1
]}

Guo, L. X. ^{[1
]}

Ouyang, J. H. ^{[1
]}

Jia, D. C. ^{[1
]}

机构：

[1] Harbin Inst Technol, Inst Adv Ceram, Harbin 150001, Peoples R China

[2] Jilin Univ, Minist Educ, Key Lab Engn Bion, Changchun 130025, Peoples R China

来源：

CORROSION SCIENCE | 2011年 / 53卷 / 02期

关键词：

Aluminium; EIS; Oxide coatings; Passive films; PLASMA ELECTROLYTIC OXIDATION; ELECTROCHEMICAL CORROSION BEHAVIOR; FRETTING FATIGUE BEHAVIOR; MAGNESIUM ALLOY AZ91D; MG-SI ALLOY; IMPEDANCE SPECTROSCOPY; PLAIN FATIGUE; GRAIN-SIZE; RESISTANCE; PERFORMANCE;

D O I：

10.1016/j.corsci.2010.10.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The self-repairing microarc oxidation (MAO) coating consisting of a bottom nanocrystalline layer covered by a top conversion ceramic coating was fabricated on 2024 Al alloy by a duplex process with surface mechanical attrition (SMAT) prior to microarc MAO treatment. A 20 mu m thick nanocrystalline layer with average grain size of 52.8 nm was fabricated by SMAT, and on which covered by a top MAO coating of 5 pm. The self-repairing property caused by the formation of a dense passive film at the damaged regions contacting the bottom nanocrystalline layer enhances the corrosion reisitance of the SMAT-MAO coating. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：618 / 623

页数：6

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