【作者】 苏永要； 郐晛； 包娟娟； 冷永祥； 孙鸿； 黄楠； 李树勇； 谭云；

【Author】 SU Yong-yao~1 GUI Xian~1 BAO Juan-juan~1 LENG Yong-xiang~1 SUN Hong~1 HUANG Nan~1 LI Shu-yong~2 TAN Yun~2 (1.Key Laboratory for Advanced Technologies of Materials,Ministry of Education,School of Materials Science and Engineering,Southwest Jiaotong University,610031 Chengdu,Sichuan.2.China Academy of Engineering Physics,621000,Mianyang,Sichuan.)

【机构】 材料先进技术教育部重点实验室材料科学与工程学院西南交通大学； 中国工程物理研究院；

【摘要】 采用等离子体浸没离子注入(PⅢ)技术对LC4铝合金进行注氮处理,由于注入过程中温度升高使基体软化,采用人工时效对样品进行强化处理。利用X射线光电子能谱仪(XPS)、显微硬度计和摩擦磨损实验机等测试方法分析了表面改性层的成分、显微硬度和摩擦磨损性能。研究结果表明,注氮改性后铝合金表面形成了氮化铝改性层,但是由于注入温度高,基体硬度降低,因此,随后采用人工时效对样品进行强化处理。采用氮离子注入和人工时效复合处理,样品的显微硬度和耐磨性大幅度提高。更多还原

【Abstract】 LC4 aluminium alloy was treated by nitrogen plasma immersion ion implantation(PⅢ),and the hard AlN layer formed on the surface of aluminium alloy.But the hardness of the aluminum alloy decreased for the high temperature during the process of implantation.So the samples were then treated by the artificial aging to increase aluminium alloy substrate hardness.The chemical composition,microhardness and wear resistance were characterized by X-ray photoelectron(XPS),microhardness meter and wear test.The results revealed that the AlN layer formed on the surface of aluminium alloy after nitrogen plasma implantation.The microhardness and wear resistance were evidently improved by nitrogen plasma immersion ion implantation and the artificial aging duplex treatment.更多还原