Abstract
In order to investigate the surface morphology of nanotube formed Ti alloy by electrochemical methods, the Ti-6Al-4V alloys for dental implant were used in this study. Heat treatment was carried out at 800 degrees C for 1 hour and then water quenching in argon atmosphere, that will be have a specimen name of 800 WQ. The formation of nanotube structure was conducted by electrochemical method on Ti-6Al-4V alloy in mixed electrolytes at 30 V for 1 hour. Microstructure of β phases showed dot-like structures at non-treated Ti-6Al-4V alloy, and needle-like in equiaxed structure from treated the alloy at 800 WQ. In non-treated Ti-6Al-4V alloy case, nanotubes only exhibited at α phase region with dissolved V-oxide area of β phase. However, in the case of 800 WQ, nanotubes of Ti-6Al-4V alloy exhibited at both α and βphase region. Electrochemical corrosion studies showed that the nanotubular alloy of 800 WQ possesses slightly higher corrosion resistance than that of non-treated nanotubular alloy.
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