摘要
磷酸盐电解液体系下,利用微弧氧化技术在ZK60镁合金表面原位制备了耐磨性陶瓷膜,通过SEM、XRD、硬度计和摩擦磨损试验机,对不同电流密度下所制备的镁合金微弧氧化陶瓷膜的微观形貌、结构组成、显微硬度和摩擦系数等进行了研究。结果表明,微弧氧化膜主要由MgO组成;恒流模式下,随着电流密度升高,氧化陶瓷膜的表面的微孔数量减少,但孔径增大;表面显微硬度则呈先增大后减少趋势;当电流密度为12 A/dm^2时,在镁合金表面所获得的微弧氧化陶瓷膜具有较好的耐磨性。
Wear-resistant ceramic coating was prepared on ZK60 magnesium alloy by micro-arc oxidation in the phosphate electrolyte. The surface morphology, phase composition, micro-hardness and tribological property of micro-arc oxidation coating formed in different current density were investigated by SEM, XRD, micro-hardness tester and friction-abrasion testing machine. The results indicate that ceramic coating is mainly composed by MgO. The ceramic coating shows the higher hardness and lower friction coefficient under current density of 12 A/dm^2.
出处
《辽宁化工》
CAS
2017年第1期23-26,共4页
Liaoning Chemical Industry
关键词
镁合金
电流密度
微弧氧化
摩擦性能
magnesium alloy
current density
micro-arc oxidation
tribological property
