TiNi合金表面双辉等离子渗钼合金化后的结构与性能
Structure and Properties of TiNi Alloy Surface after Mo Alloying by Double Glow Plasma Process
摘 要
采用双辉等离子表面合金化技术对TiNi合金进行表面渗钼合金化处理; 采用光学显微镜、辉光放电光谱仪和扫描电镜对合金化试样的截面及表面进行了表征, 采用显微硬度计、硬度计、往复磨损试验机及白光干涉仪对合金化试样的表面硬度、结合强度及摩擦学性能进行了测试。结果表明: TiNi合金表面渗钼合金化后形成了三层结构的合金层, 从外向内依次是钼沉积层、富钛合金层和贫钼合金层; 合金层与基体间形成了冶金结合, 其表面硬度、耐磨性能与基体合金相比提高了2.5倍和2个数量级。
TiNi合金
显微硬度
耐磨性
Mo alloying
TiNi alloy
microhardness
wear resistance
Abstract
The process of Mo alloying was performed on the surface of TiNi alloys by double glow plasma surface alloying/metallurgy (DG-PSM) technology, and the cross-section and surface morphology of alloying sample were characterized by means of optical microscopy (OM), glow discharge spectrometer (GDS) and scanning electron microscopy (SEM), and the surface hardness, bonding strength and tribological properties of alloying sample were tested by microhardness tester, durometer, reciprocating wear instrument and white light interferometer. The results show that the alloying layer consisted of triple layers structure after Mo alloying on TiNi alloy surface. From the surface to the matrix, they were Mo deposition layer, Ti-rich alloying layer and Mo-poor alloying layer, respectively. The metallurgical bonding between alloying layer and the matrix was obtained, and the surface hardness and wear resistance of the alloying layer were 2.5 times and 2 orders of magnitude higher than those of matrix alloy.
中图分类号 TG146.2 TG178
所属栏目 试验研究
基金项目 国家自然科学基金资助项目(51071106); 山西省自然科学基金资助项目(2011011020-3); 山西省回国留学人员科研资助项目
收稿日期 2012/4/26
修改稿日期 2013/2/26
网络出版日期
作者单位点击查看
备注赵远涛(1988-), 男, 山东潍坊人, 硕士研究生。
引用该论文: ZHAO Yuan-tao,WANG Zhen-xia,NING Lai-yuan,YU Sheng-wang,HE Zhi-yong. Structure and Properties of TiNi Alloy Surface after Mo Alloying by Double Glow Plasma Process[J]. Materials for mechancial engineering, 2013, 37(5): 10～14
赵远涛,王振霞,宁来元,于盛旺,贺志勇. TiNi合金表面双辉等离子渗钼合金化后的结构与性能[J]. 机械工程材料, 2013, 37(5): 10～14
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