期刊
JOURNAL OF FUNCTIONAL BIOMATERIALS
卷 12, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/jfb12040065
关键词
titanium alloy; ball head; hip joint endoprosthesis; modified surface; vacuum ion-plasma nitriding; microhardness; structure; torque; coefficient of friction; titanium nitride
资金
- [FSFF-2020-0017]
- [075-00892-20-00]
The study showed that thermohydrogen treatment and vacuum ion-plasma nitriding have significant effects on the volume and surface structure of ball heads made of Ti-6Al-4V alloy, increasing hardness, improving surface quality, and reducing friction wear. Additionally, the formation of oxynitride nanoscale layer on the surface was found to change the color and improve wear resistance in ball heads implanted in the human body for 12 years.
The effect of thermohydrogen treatment and vacuum ion-plasma nitriding on the determination of the volume and surface structure of ball heads made of Ti-6Al-4V alloy was studied. It was found that the submicrocrystalline structure formed in the head during thermohydrogen treatment makes it possible to achieve hardness values of 39-41 units HRC and a surface roughness of 0.02 mu m. It was shown that the creation of a modified layer consisting of epsilon (TiN) and delta (Ti2N) titanium nitrides on the surface of a ball head and the solid interstitial solution of nitrogen in alpha-titanium makes it possible to completely eliminate material wear when testing for friction on ultra-high-molecular-weight polyethylene. The equivalent analysis was also conducted with a ball head that had been implanted in a human body for 12 years. It was found that the change in the color of the head, from slightly golden after nitriding to metallic, is due to the formation of an oxynitride nanoscale layer on the surface. It was shown that in contrast with films made of titanium oxide, the film developed in this study has high wear resistance.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据