【摘要】 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．更多还原

【Abstract】 Aluminum alloys LD10 and LY12 were implanted with nitrogen ions by plasma immersion ion implantation (PIII) technique at a dose range of 2×10 17 ～1×10 18 N +/cm 2.The depth profile of nitrogen was investigated by Auger electron spectroscopy (AES).The wear tests were carried out on a pin on disc wear tester. The worn surface was observed by scanning electron microscopy (SEM). The results reveal that after nitrogen ion implantation, the micro hardness of the surface layer increased and the friction coefficient decreased. With the increase of nitrogen ion dose and implantation voltage,the wear resistance of aluminum alloys increased. The dominant wear mechanism of the implanted alloys was adhesion wear. With the increase of nitrogen ion dose,the adhesion wear tended to abate gradually. Such effect is mainly attributed to the formation of AlN precipitation by nitrogenion implantation.更多还原