ZM5镁合金微弧氧化膜的摩擦磨损性能研究
Study on Friction and Wear Property of Micro-arc Oxidation Coating on ZM5 Magnesium Alloy
胡慧玲, 吴向清, 谢发勤, 杜 肖
点击：3555次 下载：0次
作者单位：西北工业大学 航空学院, 陕西 西安 710072
中文关键字：镁合金； 微弧氧化； 摩擦磨损
英文关键字：magnesium alloy; micro-arc oxidation; friction and wear
中文摘要：利用微弧氧化装置在硅酸盐体系中对ZM5镁合金进行了微弧氧化表面改性处理。采用XRD及SEM分析了ZM5镁合金微弧氧化陶瓷膜的形貌、组成和结构，并对微弧氧化陶瓷膜的硬度以及干式滑动摩擦磨损行为进行了研究。结果表明：微弧氧化膜由三层结构组成，主要由Mg2SiO4相和少量MgO相组成；可以显著提高镁合金基体的硬度和耐磨性，其室温滑动摩擦磨损机理为轻微犁削和粘附转移。
英文摘要：Micro-arc oxidation coating was deposited on ZM5 alloy sample using MAO processing in silicate system. The morphology, content and structure of micro-arc oxidation ceramic coating were investigated by XRD and SEM. The microhardness, friction and wear behavior under dry sliding were also measured. The results show that the micro-arc oxidation coating can be divided into three stratums and the constituent phases mainly are Mg2SiO4 and MgO, The micro-arc oxidation coating can evidently improve the anti-wear performance and rigidity of magnesium. The wear mechanism of the coating is light furrow and conglutinating diversion.