Effect of n-implantation on the corrosive-wear properties of surgical Ti-6Al-4V alloy
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. 10 references, 5 figures, 1 table.
- Research Organization:
- Oak Ridge National Lab., TN
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6954971
- Journal Information:
- Mater. Res. Soc. Symp. Proc.; (United States), Vol. 27
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
62 RADIOLOGY AND NUCLEAR MEDICINE
ALUMINIUM ALLOYS
CORROSION
WEAR RESISTANCE
BONE JOINTS
PERFORMANCE
NITROGEN
ION IMPLANTATION
TITANIUM ALLOYS
VANADIUM ALLOYS
EXPERIMENTAL DATA
ALLOYS
BODY
CHEMICAL REACTIONS
DATA
ELEMENTS
INFORMATION
MECHANICAL PROPERTIES
NONMETALS
NUMERICAL DATA
ORGANS
SKELETON
360105* - Metals & Alloys- Corrosion & Erosion
550600 - Medicine