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Ion implantation of surgical Ti-6Al-4V for improved resistance to wear-accelerated corrosion

✍ Scribed by Buchanan, R. A. ;Rigney, E. D. ;Williams, J. M.

Publisher
John Wiley and Sons
Year
1987
Tongue
English
Weight
786 KB
Volume
21
Category
Article
ISSN
0021-9304

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✦ Synopsis

The influence of nitrogen-ion implantation on the wear-accelerated corrosion behavior of surgical Ti-6A1-4V was studied. Nonpassivated and prepassivated unimplanted Ti-6A1-4V 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 wearacceler-ated corrosion in both saline and serum solutions.

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