【摘要】 采用金属蒸气真空弧放电离子源在奥氏体不锈钢上进行Co+C离子的双注入与同时注入,研究了Co+C双注入层和同时注入层元素的成分深度分布及其摩擦磨损行为.结果表明:双注入和同时注入方式均能够在不锈钢表面产生1个Co与C共存区域,注入离子浓度范围宽化,强化范围增加;双注入和同时注入均能够提高不锈钢的表面硬度,降低其表面的摩擦系数,提高其耐磨性;采用大剂量同时注入方式改善摩擦磨损性能的效果优于双注入方式.更多还原

【Abstract】 Cobalt and carbon ions were dual-and co-implanted into austenitic stainless steel by a metal vapor vacuum arc（MEVVA） ion source with total dose of 6×10¹⁷ ions /cm² and 8×10¹⁷ ions /cm².Microstructural properties of the implanted surface were investigated by Auger electronic spectroscopy and microhardness test,and tribological performance of the modified layer were carried out on a pin-on-disc tribometer and their friction and wear properties were discussed.Analysis of AES results show that a Co+C co-existed zone were obtained by dual-and Co-implantation of Co+C,leading to broadened concentration profiles and extended strengthened depth.Both dualand co-implantation of Co+C greatly increased the near-surface hardness and improved the wear resistance of stainless steel.Compared with the unimplanted sample,wear volume loss was reduced by 82% with dual-implantation and by 76%⁹7% with co-implantation.Moreover,co-implantation of Co+C with higher dose was more effective than dual-implantation for improving wear resistance.更多还原