王振国,毕衍泽,李岩,蔡海娇.SiC和Al2O3颗粒对Ti-25Nb-3Mo-3Zr-2Sn合金微磨损行为的影响[J].稀有金属材料与工程,2019,48(5):1421~1428.[Wang Zhenguo,Bi Yanze,Li Yan,Cai haijiao.Effects of SiC and Al2O3 particles on micro-abrasion behavior of Ti-25Nb-3Mo-3Zr-2Sn alloy[J].Rare Metal Materials and Engineering,2019,48(5):1421~1428.]
SiC和Al2O3颗粒对Ti-25Nb-3Mo-3Zr-2Sn合金微磨损行为的影响
投稿时间:2017-12-18  修订日期:2018-01-08
中文关键词:  微磨损  磨粒  生物材料  Ti-25Nb-3Mo-3Zr-2Sn  协同作用
基金项目:中国博士后科学基金(2016M591040);国家自然科学基金-青年项目(51401027)
中文摘要:
      本文研究了SiC和Al2O3颗粒对生物医用植入材料Ti-25Nb-3Mo-3Zr-2Sn合金的微磨损行为的影响。在文中研究了合金的比磨损率、摩擦系数、磨损机制以及微磨损与腐蚀之间的协同作用。研究结果显示,合金的比磨损率随磨粒尺寸的增加而增加。由于SiC磨粒的硬度和切削性均优于Al2O3磨粒,由此在同尺寸磨粒下SiC磨粒所造成的材料的损失比Al2O3磨粒造成的要大。摩擦系数的结果显示,在同一种磨粒作用下,Hank’s溶液中所获得的摩擦系数的平均值大于蒸馏水中所获得的摩擦系数平均值,且由于Hank’s溶液的腐蚀性所致在Hank’s溶液中获得的摩擦系数的稳定性要比在蒸馏水中的稳定性差;在同尺寸磨粒下,Al2O3磨粒所造成的摩擦系数要大于SiC磨粒所造成的。随磨粒尺寸的减小,磨损机制由三体磨损转变为混合磨损之后再转变为二体磨损。从磨损机制图中可以看出腐蚀对材料损失的贡献是不容小视的,磨损机制为以磨损为主的磨损腐蚀。
Effects of SiC and Al2O3 particles on micro-abrasion behavior of Ti-25Nb-3Mo-3Zr-2Sn alloy
英文关键词:micro-abrasion  abrasive particles  biomaterial  Ti-25Nb-3Mo-3Zr-2Sn  synergistic effect
英文摘要:
      The effects of SiC and Al2O3 abrasive particles on micro-abrasion behavior of a biomaterial Ti-25Nb-3Mo-3Zr-2Sn alloy in Hank’s solution was investigated. The effects of particle size and type were considered. The specific wear rate, friction coefficient, wear mechanism and the synergistic effect between the micro-abrasion and corrosion were studied. The results showed that the specific wear rates increased with an increase in the particle size. Due to the hardness and machinability of SiC particle is higher, the material loss caused by the SiC particle is greater than the Al2O3 particle under the same size. The average friction coefficients obtained in Hank’s solution are larger than those in distilled water for the SiC particle; however, the Al2O3 particle is just the opposite. For the same particle size, the average friction coefficients acquired by the Al2O3 particle is larger than the SiC particle. Due to the corrosivity of Hank’s solution, the stability of the friction coefficient in Hank’s solution is poor compared to that of distilled water. With a decrease of the particle size, the wear mechanism changed from a three-body rolling abrasion to a mixed mode and finally to a two-body grooving abrasion. The mechanistic map of the AC-PA against the PA illustrated that the contribution of corrosion to the total material loss cannot be ignored, and the main regime is abrasion-corrosion.
作者单位E-mail
王振国 北京航空航天大学 材料科学与工程学院 wzghappy@buaa.edu.cn 
毕衍泽 北京航空航天大学 材料科学与工程学院  
李岩 北京航空航天大学 材料科学与工程学院  
蔡海娇 有研医疗器械(北京)有限公司  
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