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用等离子体淹没离子注入技术对ＬＹ１２和ＬＤ１０铝合金表面进行氮离子注入．用俄歇电子能谱分析了离子注入层中氮的浓度分布，在此基础上进行了摩擦磨损试验．用扫描电镜观察和分析磨损表面特征．研究表明：氮离子注入铝合金形成细小、弥散的硬质ＡｌＮ析出相，铝合金表层的显微硬度增加，摩擦系数降低；耐磨性随着注入剂量和电压的增加而提高．磨损机制主要为粘着磨损，随离子注入剂量的增加，粘着磨损趋于减轻．
Nitrogen ion implantation was performed on the surface of LY12 and LD10 aluminum alloy by plasma submerged ion implantation. The concentration distribution of nitrogen in the ion-implanted layer was analyzed by Auger electron spectroscopy, and the friction and wear test was carried out. Scanning electron microscopy observation and analysis of worn surface features. The results show that the microhardness of the aluminum alloy surface increases and the friction coefficient decreases when nitrogen ions are injected into the aluminum alloy to form the fine and dispersed hard AlN precipitates. The wear resistance increases with the increase of the implantation dose and voltage. Wear mechanism is mainly adhesive wear, with ion implantation dose increases, adhesive wear tends to reduce.