摘要
采用Ag和Ta离子双注入对医用Ti6Al4V合金进行表面改性,即以Ag离子1.0×10^(17)cm^(-2)先注入、以Ta离子1.5×10^(17)cm^(-2)后注入合金样品表面。采用纳米力学探针研究离子注入前、后Ti6Al4V样品表面硬度随压入深度的变化,利用多功能摩擦磨损试验机分析离子注入前、后样品的耐磨性,利用XRD和XPS研究样品表面的物相组成和元素化合态。结果表明,离子注入后样品磨损量降低了77%、耐磨损性能的明显改善归因于样品硬度增加,磨损开始阶段保持低摩擦系数的时间较长和离子注入后合金固溶强化。
The wear performance of Ti6A14V alloy for clinical usage was modified by dualion implantation technique. The samples were implanted firstly with silver ions at a dose of 1.0×10^17cm^-2, then with tantalum ions at a dose of 1.5×10^17cm^-2. Nanoindenter instrument was used to measure the variation of hardness with displacement into surface of sample, and multi-functional tribological tester was used to investigate the wear and tribological property. Phase constitution in the surface layer of Ti6A14V alloy was characterized by glancing angle X-ray diffraction （GAXRD）, the X-ray photoelectron spectroscopy was used to analyze the chemical states of elements in the surface layer of sample. The results show that the worn area of Ag＋Ta dual-ion-implanted Ti6A14V alloy is decreased by 77% compared with untreated alloy. The improvement of the wear property is related to the increase of hardness, long holding time of low friction coefficient and solid solution strengthening induced by Ag and Ta.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2009年第6期764-768,共5页
Acta Metallurgica Sinica
关键词
TI6AL4V
离子双注入
固溶强化
表面改性
磨损性能
Ti6A14V, dual ion implantation, solid solution strengthening, surface modification, wear performance
