Surface Modification of Aluminum 6061-O Alloy by Plasma Electrolytic Oxidation to Improve Corrosion Resistance Properties

被引：22

作者：

Dzhurinskiy, Dmitry V. ^{[1
]}

Dautov, Stanislav S. ^{[1
]}

Shornikov, Petr G. ^{[1
]}

Akhatov, Iskander Sh. ^{[1
]}

机构：

[1] Skolkovo Inst Sci & Technol, Ctr Design Mfg & Mat, Bolshoy Blvd 30,Bld 1, Moscow 121205, Russia

来源：

COATINGS | 2021年 / 11卷 / 01期

关键词：

coatings; corrosion; plasma electrolytic oxidation; electrochemical characterization; COATINGS; PROTECTION; BEHAVIOR;

D O I：

10.3390/coatings11010004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present investigation, the plasma electrolytic oxidation (PEO) process was employed to form aluminum oxide coating layers to enhance corrosion resistance properties of high-strength aluminum alloys. The formed protective coating layers were examined by means of scanning electron microscopy (SEM) and characterized by several electrochemical techniques, including open circuit potential (OCP), linear potentiodynamic polarization (LP) and electrochemical impedance spectroscopy (EIS). The results were reported in comparison with the bare 6061-O aluminum alloy to determine the corrosion performance of the coated 6061-O alloy. The PEO-treated aluminum alloy showed substantially higher corrosion resistance in comparison with the untreated substrate material. A relationship was found between the coating formation stage, process parameters and the thickness of the oxide-formed layers, which has a measurable influence on enhancing corrosion resistance properties. This study demonstrates promising results of utilizing PEO process to enhance corrosion resistance properties of high-strength aluminum alloys and could be recommended as a method used in industrial applications.

引用

页码：1 / 13

页数：13

共 32 条

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