Nanoscale surface modifications and corrosion resistance

Reported works concerning corrosion resistance of implants after nanoscale surface modifications are scanty. Depending upon the type of the implant material and the nature of modification, corrosion resistance of modified implants can be superior or inferior. For example, a thick anodized porous oxide layer improves 

5 Potentiostatic polarization plots recorded at 300 mV for (a) bare titanium alloy, (b) nanotubular alloy and (c) nanotubular alloy after heat treatment at 150°C.The inset shows the lateral and surface appearances of the nanotubes formed on the alloy (Saji and Choe, 2009). 

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