在微弧氧化电解液中添加纳米Al 微粒,在纯钛表面进行微弧氧化制备Al2O3/TiO2复合微弧氧化膜,采用Quant 200 型扫描电子显微镜(SEM)观察膜层的表面形貌,并研究纳米Al 微粒对微弧氧化复合膜层硬度和耐磨性能的影响。结果表明,纳米Al微粒的添加可使纯钛微弧氧化膜的表面更加平整致密,硬度和耐磨性显著提高。电解液中添加3 g/L 纳米Al 微粒后,微弧氧化的终止电压由460 V 上升至515 V,硬度由811 HV 提高至1232 HV,平均摩擦系数由0.68 降低至0.57,磨损失重由1.0 mg 降低至0.58 mg。
The micro-arc oxidation technology is employed to prepare an Al2O3/TiO2 composite coating on pure titanium with Al particles addition into electrolyte. The surface morphology of micro-arc oxidation composite coating is investigated by Quant 200 SEM. The properties of Al2O3/TiO2 composite coating are investigated in terms of the hardness and abrasion resistance of micro-arc oxidation with different Al particle concentrations. The results show that micro-arc oxidation technology can be introduced to prepare Al2O3/TiO2 composite coating. The addition of Al particle into the electrolyte can improve the compactness, abrasion resistance and hardness of micro-arc oxidation composite coating. The termination voltage of micro oxidation increases from 460 V to 515 V, the hardness increases from 811 HV to 1232 HV, the average friction coefficient decreases from 0.68 to 0.57, and the wear weightlessness reduces from 1.0 mg to 0.58 mg when the content of Al particles is 3 g/L.
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