Abstract
In the present study an electrochemical adonization procedure was used to manufacture the nanostructures, to improve the hardness and to reduce long term damage on the Ti-6Al-4V alloy, using a glycerol organic tool and HCl as an electrolyte. With Raman microscopy, different vibrational modes related to the two TiO2 phases (anatase and rutile) were observed. Using scanning electron microscopy, a uniform growth of TiO2 nanotubes was observed when the percentage of glycerol was increased in the solution. The hardness value raised 6.75 GPa, but after anodization and thermal treatment a maximum value of 10.25 GPa was achieved, according to the value reported of the alloy that is between 2.942 GPa and 3.92 GPa. Finally, the TiO2 nanostructures growing process made a hardness improvement and lowered the alloy friction coefficient from 0.67 to a minimum of 0.59.
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