摘要
研究了等离子体浸没离子注入(PIII)技术对Ti6Al4V合金表面性能的影响。分析比较了灯丝放电PIII和射频辉光放电PIII对基体表面进行氮离子注入后的改性效果。应用X射线衍射仪(XRD),扫描电镜(SEM)分析了注入层的相组成和组织结构;测试了经不同PIII工艺参数处理后试样的显微硬度和摩擦磨损性能。结果表明:氮离子注入使Ti6Al4V的粗大晶粒(α-β相)转变为细小致密的晶粒,表面层中形成了耐磨相TiN;处理后试样表面的显微硬度提高了80%,摩擦系数降到0.16,抗磨损性能得到了显著提高。
The surface properties of Ti6A14V alloy were investigated by plasma immersion ion implantation （PIII） technique. Modification effect of hot filament gas discharge PIII was compared with that of radio-frequency （RF） glow discharge PIII. The phase composition, and microstructure of samples were characterized by X-ray diffraction （XRD）, and Scanning electron microscope （SEM）. The microhardness, friction and wear behavior of treated- and untreated- coupons were also measured. The results reveal that the large crystal grains （α-β phase） are changed into small ones. The superhard TiN layer is formed on the surface. The microhardness is increased by 80 percent, friction coefficient is reduced to 0.16, and wear resistance is improved significantly.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2005年第8期1318-1321,共4页
Rare Metal Materials and Engineering
基金
国防预研基金资助项目(7001028)
作者简介
刘洪喜，男，1972年中，博士研究生，哈尔滨工业大学现代焊接生产技术国家重点实验室，黑龙江哈尔滨150001，电话：0451-86418728，E—mail：vipliuhx@yahoo．com．cn
