TiNi合金表面钼合金层的物相与性能
Phase and Properties of Mo Alloyed Layer on TiNi Alloy Surface
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。
等离子表面合金化
电化学性能
耐磨性能
TiNi alloy
plasma surface alloying
electrochemical performance
wear resistance
Abstract
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 Ni3Ti 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.
中图分类号 TG115.5 DOI 10.11973/jxgccl201701010
所属栏目 试验研究
基金项目 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）
收稿日期 2015/10/15
修改稿日期 2016/11/21
网络出版日期
作者单位点击查看
备注单小林(1989-),男,河南商丘人,硕士研究生。
引用该论文: SHAN Xiao-lin,WU Hai-rui,WANG Zhen-xia,LIN Nai-ming,LIU Xiao-ping,HE Zhi-yong. Phase and Properties of Mo Alloyed Layer on TiNi Alloy Surface[J]. Materials for mechancial engineering, 2017, 41(1): 47～50
单小林,吴海瑞,王振霞,林乃明,刘小萍,贺志勇. TiNi合金表面钼合金层的物相与性能[J]. 机械工程材料, 2017, 41(1): 47～50
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【5】HIRAGA H, INOUE T, SHIMURA H, et al. Cavitation erosion mechanism of NiTi coatings made by laser plasma hybrid spraying[J].Wear,1999,231:272-278.
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【11】朱利华, 许晓静, 刘敏, 等. 微弧氧化对常规和超细TiNi合金表面性能的影响[J].中国有色金属学报,2014,24(4):1014-1019.
【12】NG K W, MAN H C, YUE T M. Corrosion and wear properties of laser surface modified NiTi with Mo and ZrO2[J].Applied Surface Science,2008,254(21):6725-6730.
【13】王秋霞. 微量元素钼与人体健康[J].微量元素与健康研究,2003,20(4):58-61.
【14】赵远涛, 王振霞, 宁来元, 等. 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.
【15】张翥, 王群骄, 莫畏. 钛的金属学和热处理[M]. 北京:冶金工业出版社,2014:4-23.
【16】骆素珍, 郑玉贵, 敬和民, 等. 空蚀对20SiMn在3%NaCl溶液中的电化学腐蚀行为的影响[J].腐蚀科学与防护技术,2003,15(6):311-314.
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