摘要
采用双辉等离子表面合金化技术在TiNi合金表面制备钼合金层,分析了钼合金层的物相和成分分布,利用带电化学测试系统的超声波振动空蚀试验机和往复摩擦磨损试验机分别研究钼合金化试样和基体合金的电化学性能和耐磨性能。结果表明:在TiNi合金表面制备了成分呈梯度分布的钼合金层,该层中主要含有Mo、MoTi和Ni3Ti相;在空蚀条件下合金基体的钝化能力受到抑制,钼合金化试样则呈现出一定程度的钝化能力;两者的磨损机制均是磨粒磨损和黏着磨损,合金基体的磨痕宽度远大于钼合金化试样的,并且黏着磨损更为严重。
Mo alloyed layer on the surface of TiNi alloy substrate was obtained by using the double glow plasma surface alloying technique,and phase and composition distribution of the Mo alloyed layer were investigated.The electrochemical performance and wear resistance of Mo alloyed layer and TiNi alloy substrate samples were studied by by ultrasonic vibration cavitation erosion test machine with electrochemical measurement system and the reciprocating friction and wear tester.The results show that the atomic concentration of Mo alloyed layer presented gradient distribution and Mo alloyed layer was mainly composed of Mo,MoTi and Ni3 Ti phases.The passivation capability of the substrate was suppressed during the cavitation,while Mo alloyed sample showed the passivation in a certain extent.The wear mechanism of Mo alloyed sample and the substrate alloy sample were abrasive wear and adhesive wear.The wear scar width of TiNi alloy substrate was much larger than that of Mo alloyed sample,and the adhesive wear of the substrate alloy was more serious.
作者
单小林
吴海瑞
王振霞
林乃明
刘小萍
贺志勇
SHAN Xiao-lin WU Hai-rui WANG Zhen-xia LIN Nai-ming LIU Xiao-ping HE Zhi-yong(Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan 030024, Chin)
出处
《机械工程材料》
CAS
CSCD
北大核心
2017年第1期47-50,55,共5页
Materials For Mechanical Engineering
基金
山西省自然科学基金资助项目(2014011015-7
2013021013-2)
国家自然科学基金资助项目(51474154)
山西省回国留学人员科研资助项目(2013-048)
