Buchanan R A, Rigney E D, Williams J M
J Biomed Mater Res. 1987 Mar;21(3):355-66. doi: 10.1002/jbm.820210308.
The influence of nitrogen-ion implantation on the wear-accelerated corrosion behavior of surgical Ti-6Al-4V was studied. Nonpassivated and prepassivated unimplanted Ti-6Al-4V specimens were employed as controls for comparison. Corrosion rates as a function of time at open-circuit corrosion potentials were electrochemically measured in saline and serum solutions under both static and wear conditions. The wear parameters simulated those of a total artificial hip under average walking conditions. The results indicated that prepassivation of the control material was beneficial under static-corrosion conditions, but not under wear-corrosion conditions. The nitrogen-ion implantation process was found to significantly improve the material's resistance to wear-accelerated corrosion in both saline and serum solutions.
研究了氮离子注入对医用Ti-6Al-4V磨损加速腐蚀行为的影响。采用未钝化和预钝化的未注入氮离子的Ti-6Al-4V试样作为对照进行比较。在静态和磨损条件下，于生理盐水和血清溶液中，通过电化学方法测量了开路腐蚀电位下腐蚀速率随时间的变化。磨损参数模拟了平均行走条件下全髋关节置换的情况。结果表明，对照材料的预钝化在静态腐蚀条件下是有益的，但在磨损腐蚀条件下并非如此。研究发现，氮离子注入过程能显著提高材料在生理盐水和血清溶液中对磨损加速腐蚀的抗性。
