Corrosion resistance of composite oxide film prepared on Ca-added flame resistant magnesium alloy AZCa612 by micro-arc oxidation

被引：23

作者：

Li, Oi Lun ^{[1
,2
]}

Tsunakawa, Mika ^{[2
]}

Shimada, Yuta ^{[2
]}

Nakamura, Kae ^{[3
]}

Nishinaka, Kazuhito ^{[4
]}

Ishizaki, Takahiro ^{[1
,2
]}

机构：

[1] Shibaura Inst Technol, Grad Sch Engn & Sci, SIT Res Labs, Koutou Ku, 3-7-5 Toyosu, Tokyo 1358548, Japan

[2] Shibaura Inst Technol, Grad Sch Engn & Sci, Dept Mat Sci & Engn, Koutou Ku, 3-7-5 Toyosu, Tokyo 1358548, Japan

[3] Shibaura Inst Technol, Grad Sch Engn & Sci, Funct & Control Engn, Koutou Ku, 3-7-5 Toyosu, Tokyo 1358548, Japan

[4] ART1 Inc, Dev Sect, 2-4-14-608 Chuo, Kanagawa, Tokyo 2420021, Japan

来源：

CORROSION SCIENCE | 2017年 / 125卷

基金：

日本学术振兴会; 日本科学技术振兴机构;

关键词：

Ca-added Magnesium alloy; Micro-arc oxidation; Corrosion resistance; Composite oxide film; MG-AL ALLOYS; PEO COATINGS; AZ91D; ELECTROLYTE; PROTECTION; MECHANISM; VEHICLES; FLUORIDE; BEHAVIOR;

D O I：

10.1016/j.corsci.2017.06.008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A composite oxide film was prepared on a flame-resistant magnesium alloy AZCa612 by micro-arc oxidation (MAO). The thickness of the film was approximately 30 mu m, where the film was composed of mainly of MgO and Mg-Mn-Al oxide. Potentiodynamic polarization curve measurements demonstrated that the corrosion current density of the composite oxide film coated AZCa612 decreased by 6 orders of magnitude compared to bare substrate. Immersion tests in 5 wt.% NaCl solution after 42 day indicated the coating phase did not change significantly, which proved that the MAO coating have superior corrosion resistance in 5 wt.% NaCl aqueous solution.

引用

页码：99 / 105

页数：7

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