Abstract
The formation of nanosized porous oxide layers on titanium (Ti) by asymmetric alternating current anodizing in sulfuric acid has been studied using electrochemical techniques. In order to prevent spark discharge at Ti electrode upon its anodization in 1.0 M H2S04 solution, the magnitude of the cathodic current is reduced using a special electrical circuit consisting of a variable resistor and two diodes. The unique surface treatment approach gives rise to the formation of nanosized porous layer in a very short period of time and without spark discharge. The surface of porous layers thus obtained has in vitro apatite-forming ability.
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Acknowledgments
The authors thank to Daniel Morrall (Kyoto University) for his valuable comments on this manuscript. This work was supported by JSPS KAKENHI Grant Number JP24550241. A part of this work was financed by the Light Metal Educational Foundation, Inc., Japan. In addition, this work was partially funded by the Natural Sciences and Engineering Research Council of Canada.
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Iwata, N.Y., Tanaka, Si., Fukushima, Y. et al. Preparation of nanosized porous oxide layers on titanium by asymmetric AC electrolysis in sulfuric acid. MRS Communications 9, 194–202 (2019). https://doi.org/10.1557/mrc.2018.237
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DOI: https://doi.org/10.1557/mrc.2018.237