Significance of plasma electrolytic oxidation treatment on corrosion and sliding wear performances of selective laser melted AlSi10Mg alloy

被引：19

作者：

Liu, Chenyu ^{[1
]}

Wang, Qun ^{[1
]}

Cao, Xuanyang ^{[2
]}

Cha, Limei ^{[3
]}

Ye, Renfeng ^{[4
]}

Ramachandran, Chidambaram Seshadri ^{[5
]}

机构：

[1] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China

[2] Changsha New Mat Ind Res Inst Co Ltd, Changsha 410205, Hunan, Peoples R China

[3] Guangdong Technion Israel Inst Technol, Mat Sci & Engn Program, Shantou 515063, Peoples R China

[4] China MAO Environm Protect Technol Dongguan Co Lt, Dongguan 523000, Guangdong, Peoples R China

[5] SUNY Stony Brook, Dept Mat Sci & Engn, Stony Brook, NY 11794 USA

来源：

MATERIALS CHARACTERIZATION | 2021年 / 181卷

关键词：

Selective laser melting; Plasma electrolytic oxidation; AlSi10Mg alloy; Corrosion; Sliding wear; ALUMINUM-MATRIX COMPOSITE; MECHANICAL-PROPERTIES; AL-ALLOY; COATINGS; RESISTANCE; MICROSTRUCTURE; PARAMETERS; PROPERTY; BEHAVIOR; FABRICATION;

D O I：

10.1016/j.matchar.2021.111479

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this investigation, Plasma Electrolytic Oxidation (PEO) process was used to prepare an alumina (Al2O3) coating for corrosion and wear protection of a Selective Laser Melted (SLM) AlSi10Mg alloy radiator. The phase compositions, microstructures, mechanical properties, corrosion properties and wear resistance of the SLM AlSi10Mg alloy and the PEO coatings were investigated systematically. It was observed that the AlSi10Mg alloy prepared by SLM displayed a denser microstructure, finer grains and excellent mechanical properties with an average ultimate tensile strength of 402 MPa and an elongation of 9.9%. In addition, a double-layered coating with Al2O3 as the top layer having a thickness of similar to 20 mu m and a hardness of 1051HV(0.01) was realizable on the SLM AlSi10Mg alloy by PEO treatment. The corrosion current density and wear rate of the PEO Al2O3 coatings were 5.7 and 279.3 times lower compared to the plain SLM AlSi10Mg alloy. The results indicate that the PEO treatment can significantly improve the wear and corrosion resistance of the AlSi10Mg alloy prepared by the SLM process.

引用

页数：14

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