Effect of Current Density on Micro-arc Oxidation Properties of TC11 Titanium Alloy

被引：0

作者：

Yang Mei ^{[1
]}

Tang Ning ^{[1
]}

Chen Jin ^{[2
]}

Huang Tingyu ^{[1
]}

Yang Honglang ^{[1
]}

Liu Yang ^{[1
]}

Wang Dan ^{[1
]}

Liu Wei ^{[1
]}

机构：

[1] Southwest Petr Univ, Chengdu 610500, Peoples R China

[2] Sichuan Oil & Gas Construct Engn Co, Chengdu 610500, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2020年 / 49卷 / 02期

关键词：

titanium alloy; micro-arc oxidation; wear resistance; corrosion resistance; HEAT-TREATMENT; OXIDE-FILMS; COATINGS; PEO; PERFORMANCE; ALUMINUM; METAL; CA;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The micro-arc oxidation coating was prepared on TC11 sample using sodium silicate (Na2SiO3) and sodium tungstate (Na2WO4) as electrolytes. Scanning electron microscopy (SEM), X-ray diffraction (XRD), and micro-hardness tester were used to analyze the coating surface and cross-sectional morphology and micro-hardness of the inner and outer ceramic coating. The results show that at 9 A/dm(2) current density, the optimal coating has an improved micro-hardness but the adhesion decreases compared to that of the pristine Ti substrate. The electrochemical corrosion and general corrosion of the coating were comparatively analyzed in 3.5% NaCl and 30% H2SO4 solution. When the current density is 9 A/dm(2), the coating obtained in the 30% H2SO4 solution has a lower self-corrosion current density. Finally, the wear mechanism of the coating was studied by the anti-wear experiment with SiC.

引用

页码：404 / 411

页数：8

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