【作者】 罗中杰； 唐吉玉； 杨生荣；

【Author】 LUO Zhong-jie,TANG Ji-yu, YANG Sheng-rong (Mathematics and Physics Department, China University of Geoscinece, Wuhan 430074, China; Department of Physics, South China Normal University, Guangzhou 510631, China; State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China )

【机构】 中国地质大学数理系； 华南师范大学物理系； 中国科学院兰州化学物理研究所固体润滑国家重点实验室；

【摘要】 采用内转换电子穆斯堡尔谱分析了纯铁在不同注入温度下氮离子注入生成物相的种类及相对含量,探讨了注入温度影响材料耐磨性的机理。研究结果表明:注入温度明显影响纯铁改性层的耐磨性能,低温注入较高温注入更有利于提高耐磨性;注入后析出的各种氮化物相均有利于提高耐磨性,其中ε-Fe2．3N相的作用更大。纯铁在 350℃高温注入时生成Fe3O4,因而不利于耐磨性的提高。更多还原

【Abstract】 Pure iron was implanted with N+ at various temperatures to improve the wear resistance. The phase composition of the ion-implanted layer was examined by means of conversion electron Mossbauer spectroscopy (CEMS), and the antiwear mechanism of the ion implantation was also discussed. As the results, the implantation temperature influences the antiwear behavior of the pure iron. The low temperature implantation is more effective to increasing the wear resistance of the iron. Although all nitrogen-containing products after implantation helped to improve the antiwear behavior, ε-Fe2-3N was the most effective phase to increase the wear resistance of the implanted pure iron. Fe3O4 was generated after N+ implantation of Fe at 350 ℃. This is not beneficial to improving the wear resistance.更多还原