Construction of lubricant composite coating on Ti6Al4V alloy using micro-arc oxidation and grafting hydrophilic polymer

被引：26
作者：
Wang, Kun
Xiong, Dangsheng [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Nanjing 210094, Jiangsu, Peoples R China
来源：
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS | 2018年 / 90卷
基金：
中国国家自然科学基金;
关键词：
Ti6Al4V alloy; Porous structure; Hydrophilic polymer brushes; Friction and wear; CROSS-LINKED POLYETHYLENE; TRIBOLOGICAL PROPERTIES; TITANIUM-ALLOYS; FATIGUE PROPERTIES; ION-IMPLANTATION; TI-6AL-4V ALLOY; WEAR PROPERTIES; FRETTING WEAR; SURFACE; PERFORMANCE;
D O I：
10.1016/j.msec.2018.04.057
中图分类号：
TB3 [工程材料学]; R318.08 [生物材料学];
学科分类号：
0805 ; 080501 ; 080502 ;
摘要：
To improve the tribological properties of Ti6Al4V alloy to realize the application in artificial joints, a novel composite coating was designed and fabricated on its surface through the combination of two different surface modification techniques micro-arc oxidation (MAO) and grafting hydrophilic polymer. The characterizations of morphologies and composition of MAO layer were examined using scanning electron microscopy (SEM), energy dispersive spectroscope (EDS) and X-ray diffraction (XRD). It was found that a TiO2 layer displaying uniform porous structure formed on the surface based on the optimal MAO parameters of an oxidation voltage of 450 V and an oxidation time of 60 min. After grafting 3-dimethyl(3-(N-methacrylamido)propyl) ammonium propane sulfonate (MPDSAH), Fourier-transform infrared spectroscopy with attenuated total reflection (FT-IR/ATR) and wettability test demonstrated the successful modification. Tribological performance of composite coating modified Ti6Al4V alloy in water exhibited the low friction coefficient of 0.13 and favorable wear resistance.
引用
收藏
页码：219 / 226
页数：8
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