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Effect of N-Implantation on the Corrosive-Wear Properties of Surgical Ti-6Al-4V Alloy†

Published online by Cambridge University Press:  25 February 2011

J. M. Williams ,
G.M. Beardsley ,
R. A. Buchanan  and
R. K. Bacon
J. M. Williams
Affiliation:
Solid State Division, Oak Ridge National Laboratory, P. O. Box X, Oak Ridge, Tennessee 37830;
G.M. Beardsley
Affiliation:
Solid State Division, Oak Ridge National Laboratory, P. O. Box X, Oak Ridge, Tennessee 37830;
R. A. Buchanan
Affiliation:
The University of Alabama, Birmingham, Alabama 35294
R. K. Bacon
Affiliation:
The University of Alabama, Birmingham, Alabama 35294
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Abstract

The effects of N-ion implantation on the corrosive-wear properties of Ti-6Al-4V, an alloy used for construction of the femoral component of artificial hip joints in humans, were tested. In corrosive-wear tests designed to simulate pertinent hip-joint parameters, electrochemical corrosion currents were measured for cylindrical samples in saline electrolyte in an arrangement which allowed the samples to be rotated between loaded polyethylene pads simultaneously with the current measurement. To further quantify material removal, Zr markers were ion-implanted into some samples so that, by use of Rutherford backscattering, material removal could be detected by changes in position of the marker relative to the surface. Corrosion currents were greatly reduced by implantation of approximately 20 at. % N, but even implantation of the Zr markers also reduced corrosion currents. The marker experiments confirmed the low rate of material removal for the implanted samples.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 27: Symposium E – Ion Implantation and Ion Beam Processing of Materials , 1983 , 735
Copyright
Copyright © Materials Research Society 1984

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Footnotes

†

Research sponsored in part by the Division of Materials Sciences, U. S. Department of Energy, under contract W-7405-eng-26 with the Union Carbide Corporation.

References

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