Mechanical and corrosion-resistant coatings prepared on AZ63 Mg alloy by plasma electrolytic oxidation

被引：27

作者：

Moga, S. ^{[1
]}

Malinovschi, V. ^{[2
]}

Marin, A. ^{[3
,4
]}

Coaca, E. ^{[4
]}

Negrea, D. ^{[1
]}

Craciun, Valentin ^{[5
,6
]}

Lungu, Mihail ^{[5
]}

机构：

[1] Univ Pitesti, Reg Ctr Res & Dev Mat, Proc & Innovat Prod Dedicated Automot Ind, 11 Doaga St, Pitesti 110440, Romania

[2] Univ Pitesti, Dept Environm Engn & Appl Engn Sci, Targu Din Vale St, Pitesti 110040, Romania

[3] Penn State Univ, Ken & Mary Alice Lindquist Dept Nucl Engn, State Coll, PA 16802 USA

[4] Inst Nucl Res Pitesti, Surface Anal Lab, Mioveni 115400, Romania

[5] Natl Inst Laser Plasma & Radiat Phys, 409 Atomistilor St, Magurele 077125, Romania

[6] Extreme Light Infrastruct Nucl Phys, 30 Reactorului St, Magurele 077126, Romania

来源：

SURFACE & COATINGS TECHNOLOGY | 2023年 / 462卷

关键词：

Plasma electrolytic oxidation; AZ63; Hardness; adhesion; Corrosion resistance; Microstructure; MICRO-ARC OXIDATION; MAGNESIUM ALLOY; CERAMIC COATINGS; OXIDE COATINGS; HEAT-TREATMENT; BEHAVIOR; PHOSPHATE; SILICATE; FILMS; AZ31;

D O I：

10.1016/j.surfcoat.2023.129464

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Using the plasma electrolytic oxidation (PEO) process conducted in galvanostatic mode at a constant current density of 0.2 A/cm2 in aqueous aluminate, silicate, and phosphate electrolytic solutions, we successfully produced magnesium oxide coatings (up to 182 mu m) on AZ63 alloy. Structural, chemical composition, and morphological evaluations of the coatings were investigated by XRD, XPS, and SEM. The results indicated that mixed-crystalline magnesium oxide grown on pure AZ63 alloy forms porous 8-30 mu m PEO layers with increased hardness and improved corrosion resistance. At the same time, values of 26.9 GPa and 2.0 mu A/cm2 yield noticeable performance characteristics.

引用

页数：14

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