低弹性模量Ti-33Nb-4Sn,Ti-31Nb-3Zr-4Sn钛合金在模拟人工体液中的腐蚀行为研究  

Electrochemical Corrosion Behavior of Low Elastic Modulus Ti-33Nb-4Sn,Ti-31Nb-3Zr-4Sn Alloys in Stimulated Body Fluids

作　　者：卢盼娜 杨耀军[2] 韩志军[1] 邢学刚[1] 

机构地区：[1]太原理工大学力学学院,山西太原030024 [2]太原理工大学表面工程研究所,山西太原030024

出　　处：《热加工工艺》2017年第14期89-92,95,共5页Hot Working Technology

基　　金：国家自然科学基金项目(51171125;11172195);国家青年基金(E010101);山西省高等学校科技创新项目(2014jyt03);太原理工大学校青年基金项目(2012L073;2013T065)

摘　　要：采用纳米压痕仪研究了Ti-33Nb-4Sn和Ti-31Nb-3Zr-4Sn合金的力学性能。采用动电位极化曲线、电化学阻抗谱研究了新型医用钛合金Ti-33Nb-4Sn、Ti-31Nb-3Zr-4Sn和对比合金Ti-6Al-4V在模拟人体体液中电化学腐蚀行为,并根据扫描电镜和X射线衍射仪对极化测试后的试样表面形貌和相结构进行观察。结果表明,Ti-33Nb-4Sn和Ti-31Nb-3Zr-4Sn合金具有较低的弹性模量;3种合金的腐蚀电流密度按Ti-6Al-4V、Ti-31Nb-3Zr-4Sn和Ti-33Nb-4Sn的顺序递增。The mechanical properties of Ti-33Nb-4Sn and Ti-31Nb-3Zr-4Sn alloys were studied by nanoindenter. The electrochemical corrosion behaviors of Ti-33Nb-4Sn,Ti-31Nb-3Zr-4Sn alloys and the compared alloy Ti-6Al-4V alloy were investigated in stimulated body fluids by utilizing potentiodynamic polarization curves and electrochemical impedance spectroscopy. The surface morphology and phase structure of the samples were analyzed by scanning electron microscopy （SEM） and X-ray diffraction （XRD）. The results show that Ti-33Nb-4Sn and Ti-31Nb-3Zr-4Sn alloys have low elastic moduli. The corrosion current （Icorr） densities of the three kinds of alloys increas in the order of Ti-6Al-4V、Ti-31Nb-3Zr-4Sn and Ti-33Nb-4Snalloys.

关 键 词：Ti-33Nb-4Sn合金 Ti-31Nb-3Zr-4Sn合金 模拟人工体液 电化学腐蚀 

分 类 号：TG171[金属学及工艺—金属表面处理]