Corrosion degradation of AZ31 magnesium alloy coated by plasma electrolytic oxidation

被引：23

作者：

Kajanek, Daniel ^{[1
,2
]}

Hadzima, Branislav ^{[2
]}

Buhagiar, Joseph ^{[3
]}

Wasserbauer, Jaromir ^{[4
]}

Jackova, Martina ^{[2
]}

机构：

[1] Univ Zilina, Fac Mech Engn, Univ 8215-1, Zilina 01026, Slovakia

[2] Univ Zilina, Res Ctr, Univ 8215-1, Zilina 01026, Slovakia

[3] Univ Malta, Fac Engn, MSD-2080 Msida, Malta

[4] Brno Univ Technol, Fac Chem, Purkynova 464-118, Brno 61200, Czech Republic

来源：

13TH INTERNATIONAL SCIENTIFIC CONFERENCE ON SUSTAINABLE, MODERN AND SAFE TRANSPORT (TRANSCOM 2019) | 2019年 / 40卷

关键词：

magnesium alloy; corrosion; plasma electrolytic oxidation; Scanning Kelvin Probe; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; RESISTANCE; BEHAVIOR;

D O I：

10.1016/j.trpro.2019.07.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Influence of plasma electrolytic oxidation (PEO) coating prepared using DC current technique on corrosion resistance of AZ31 magnesium alloy was studied. Morphology and chemical composition of the PEO coating was evaluated by scanning electron microscopy and EDS analysis respectively. Corrosion characteristics of ground and PEO coated samples were measured using electrochemical impedance spectroscopy (EIS) in 0.1 M NaCl. Scanning Kelvin Probe (SKP) technique was employed in order to investigate degradation mechanism of PEO samples after 24 h of salt spray test (NSS acc. to STN ISO 9227). Results showed that except of improved corrosion resistance of PEO coating, change of degradation mechanism was noticed after salt spray test. (C) 2019 The Authors. Published by Elsevier B.V.

引用

页码：51 / 58

页数：8

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