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The Effect of Nitrogen Ion Implantation on the Abrasive Wear Resistance of the Ti-6Al-4V/UHMWPE Couple

Published online by Cambridge University Press:  22 February 2011

Frank D. Matthews
Affiliation:
Johnson & Johnson Products Inc., Orthopaedic Division 100 Bay State Drive, Braintree, MA 02184
Keith W. Greer
Affiliation:
Johnson & Johnson Products Inc., Orthopaedic Division 100 Bay State Drive, Braintree, MA 02184
Douglas L. Armstrong
Affiliation:
Johnson & Johnson Products Inc., Orthopaedic Division 100 Bay State Drive, Braintree, MA 02184
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Abstract

Nitrogen ion implantation was investigated as a means of improving the wear resistance of Ti-6Al-4V alloy and the performance of the Ti-6Al-4V/ultra high molecular weight polyethylene (UHMWPE) wear couple. Included in the pin-on-disc wear study were cobalt-chromium and stainless steel controls as well as non-ion-implanted Ti-6Al-4V. Ion implanted Ti-6Al-4V and the control alloys exhibited minor scratching whereas non-ion-implanted Ti-6AI-4V exhibited definite wear scars. Gravimetric analysis of the UHMWPE discs revealed no significant difference between those worn against ion implanted Ti-6Al-4V and the control alloys. Discs worn against non-ionimplanted Ti-6Al-4V, however, exhibited significantly more weight loss than the other couples. The results of this testing indicate that nitrogen ion implantation improves the wear resistance of Ti-6Al-4V with an attendant decrease in the amount of polyethylene abrasive wear.

Type
Research Article
Copyright
Copyright © Materials Research Society 1986

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References

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