A comparative study of Ti+N and W ion implantation into Ti-6Al-4V alloy
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The effect of Ti + N hybrid ion implantation and W ion implantation at a dose of 1 X 10(17) ions/cm(2), and 50 kV and 40 W extraction voltage on mechanical properties of Ti-6Al-4V samples was studied. Mechanical tests have shown that the friction coefficient decreased with both Ti + N and W ion implantations. It was observed that the Ti + N hybrid ion implanted samples gave better results compared to those of the W ion implanted ones. The results of wear tests showed that both Ti + N hybrid and W ion implanted samples had much better wear resistance compared to unimplanted samples. Hardness values for Ti + N hybrid ion implanted and W implanted samples were much higher than those for unimplanted ones. Ti + N and W ions charge state distributions were measured using time of flight spectrometry. W concentration profiles were obtained by Rutherford backscattering spectrometry. These and the range distribution of ions in implanted and unimplanted samples were evaluated using TRIM and STOPPO programs.