目的提高AZ31镁合金的耐磨及耐腐蚀性能。方法采用磁控溅射技术对镁合金进行表面镀钛处理,用扫描电镜研究膜基界面形貌及界面成分,分析结合性能。通过摩擦磨损试验,对比分析镁合金基体和镀Ti膜样品的耐磨性能；通过Tafel极化曲线,对比分析镁合金基体和镀Ti膜样品的耐蚀性能。结果Ti膜均匀致密,与镁合金基体结合良好。镁合金镀Ti膜后,摩擦系数和磨损失重率下降,腐蚀电位向正方向移动了430 mV,腐蚀电流密度从10.83 mA/cm2下降到2.62×10-7 mA/cm2。结论磁控溅射镀Ti膜提高了AZ31镁合金的耐磨和耐蚀性能。
ABSTRACT:Objective To improve the wear resistance and corrosion resistance of AZ31 magnesium alloy. Methods Ti film was successfully deposited on the surface of AZ31 using magnetron sputtering technology. The morphology and component of the inter-face of the film and the substrate were studied by scan electronic microscopy ( SEM ) and the binding energy of the film and the substrate was analyzed. The wear resistances of the blank magnesium alloy and the titanized samples were contrastively analyzed by the friction and wear test, and the corrosion resistances of the blank magnesium alloy and the titanized samples were contrastively analyzed by the electronic-chemical workstation. Results The film layer was compact and uniform, and bound well with the sub-strate. The friction coefficient and wear weight-loss rate declined. The corrosion potential shifted by+430 mV to the positive direc-tion, and the corrosion current density decreased from 10. 83 mA/cm2 to 2. 62í10-7 mA/cm2 after the magnesium alloy was plated with Ti film. Conclusion The wear resistance and corrosion resistance of AZ31 magnesium alloy were improved by magnetron sput-tering Ti.
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