Si^+,Ti^+与N^+注入在H13钢摩擦学性能上的比较

COMPARISON OF TRIBOLOGICAL PROPERTY OPTIMIZATION IN Si^+,Ti^+ AND N^+ IMPLANTED STEEL

比较了Si^+,Ti^+和N^+注入,包括Si^++N^+与Ti^++N^+双注入对马氏体H 13钢摩擦学性能优化的影响.摩擦学性能由销一盘式试验过程中的摩擦力数据和对磨痕的表面轮廓仪和扫描电镜分析作出定量、定性的评价.结果表明,Ti^+注入和Ti^++N^+双注入的优化效果远比N^+,Si^+注入和Si^++N^+双注入优越,其摩擦系数可由0.7降至0.2以下,耐磨性提高将近2个量级.还用AlES和TEM对离子注入引起注入层成分和微结构的变化进行了研究,并对不同元素离子注入引起上述变化的机理作了初步的讨论.

The comparison of the effects on tribological preperty modification of martensitic H 13 steel implanted by several ions of Si, Ti and N (including Si or Ti followed by N) is made. Friction force measurements during unlubricated pin-on-disc sliding tests, profilometry and SEM analysis of wear tracks are used to determine the wear behavior quantitatively and qualitatively. N^+ implantation show little reduction in friction and wear rate. Si^+ implantation and Si^+ + N^+ dual implantation noticeably improved both friction and wear performance. Ti^+ implantation and Ti^++N^+ dua impla- nta tion are found to excellently reduce friction coefficient and wear rate by a factor of 2 and nearly 2 orders of magnitude respectively. The composition and microstructure changes in implanted layers are studied by using AES and TEM techniques. The mechanisms of ion implantation by N^+, Si^+ and Ti^+ induced tribological improvement, composition and microstructural changes are also discussed.