【作者】 郐晛； 苏永要； 冷永祥； 孙鸿； 黄楠； 李树勇； 谭云；

【Author】 GUI Xian~1 SUYong-yao~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,Chengdu 610031,Sichuan;2.Chinese Academy of Engineering Physics,Mianyang 621000,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】 利用高频低压等离子体浸没离子注入(HLPⅢ)技术对超硬铝合金进行氮离子注入,研究了注入气压对超硬铝合金表面改性层的结构和性能影响。通过X射线光电子能谱(XPS)、扫描电子显微镜(SEM)、显微硬度、销盘式摩擦磨损实验,表征了铝合金高频低压氮离子注入后表面改性层元素价态特征、表面形貌、显微硬度、摩擦磨损性能。研究结果表明,经氮等离子体浸没离子注入之后,铝合金表面形成AlN硬质强化相,在氮化铝以及氮的固溶强化作用下,改性后的铝合金表面耐磨性能得到一定的改善,但注入过程中由于温度较高(300℃～400℃)使基材发生软化,限制了铝合金表面耐磨性能的进一步提高。更多还原

【Abstract】 Superhard aluminium alloy was modified by high frequency and low voltage plasma immersion and nitrogen ion implantation(HLPⅢ) in this paper.The effect of gas pressure effect on the structure and other properties of aluninium alloy were analyzed.The elements and valence state,surface morphology, microhardness and wear resitstance were characterized by X-ray photoelectron(XPS),scanning electron microscopy(SEM),microhardness meter,CSEM pin- on- disk wear test apparatus respectively.The results showed that AlN hard phase can be obtained by nitride plasma implantation into superhard aluminium alloy with different gas pressure.The wear resistance of aluminium alloy has been enhanced by aluminum nitride and solid solution strengthening of nitrogen.The substrate soften,which resulted from the high temperature (300℃～400℃) in the process of implantation,restricted the improvement of wear resistance of aluminium alloy.更多还原