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杨眉,唐宁,黄婷玉,杨洪浪,刘洋,王丹,刘伟.电流密度对TC11钛合金微弧氧化性能的影响[J].稀有金属材料与工程(英文),2020,49(2):404~411.[Mei Yang,Ning Tang,Tingyu Huang,Honglang Yang,Yang Liu,Dan Wang and Wei Liu.Effect of Current Density on Micro-arc Oxidation Properties of TC11 Titanium Alloy[J].Rare Metal Materials and Engineering,2020,49(2):404~411.]
Effect of Current Density on Micro-arc Oxidation Properties of TC11 Titanium Alloy
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Received:September 05, 2018  Revised:December 17, 2019
DOI:
Key words: Titanium alloy  micro-arc oxidation  wear resistance  corrosion resistance
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Author NameAffiliation
Mei Yang,Ning Tang,Tingyu Huang,Honglang Yang,Yang Liu,Dan Wang and Wei Liu  
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Abstract:
      The weakness of wear resistance and corrosion resistance of titanium alloy has become a bottleneck restricting the use of titanium alloy. In this work, the micro-arc oxidation coating is performed on TC11 sample in electrolyte prepared by sodium silicate (Na2SiO3) and sodium tungstate (Na2WO4). Scanning electron microscopy (SEM), X-ray diffraction (XRD), micro-hardness tester are used to observe the coating surface and cross-sectional morphology, micro-hardness of the inner and outer ceramic coating. The coating is mainly composed of TiO2, γ-Al2O3, and Al2TiO5. TiO2 consists of anatase-TiO2 and a small amount of rutile-TiO2. The outer coating contains a large amount of amorphous SiO2. The electrochemical corrosion and general corrosion of the coating are comparatively analyzed in 3.5% NaCl and 30% H2SO4 solution, and the coating obtained in the 30% H2SO4 solution has a lower self-corrosion current density. Finally, the wear mechanism of the coating is studied by the anti-wear experiment with SiC.