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Study on bioactivity and bonding strength between Ti alloy substrate and TiO2 film by micro-arc oxidation

Authors
 Min-Ho Hong ; Dong-Hyun Lee ; Yong-Keun Lee ; Kwang-Mahn Kim 
Citation
 Thin Solid Films, Vol.519(20) : 7065~7070, 2011 
Journal Title
 Thin Solid Films 
ISSN
 0040-6090 
Issue Date
2011
Abstract
In this study, the Ti alloy substrate was simultaneously coated with TiO2 film and hydroxyapatite using micro-arc oxidation, a relatively new surface modification technique where thick, hard, and anticorrosive oxide coatings can be easily and cost-effectively fabricated. Pulsed DC power and various voltages were applied to the Ti alloy substrate. Citric acid, ethylene diamine, and ammonium phosphate were also dissolved as electrolytes followed by the dispersion of hydroxyapatite nanoparticles into those prepared electrolytes. The effects of the composition and applied voltage on the bonding strength, bioactivity, cell attachment and cytotoxicity were investigated. It was observed that the simultaneously coated TiO2 and hydroxyapatite samples showed improved bioactivity, cell attachment and viability, while maintaining the bonding strength between the coated film and substrate.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/93497
DOI
10.1016/j.tsf.2011.01.223
Appears in Collections:
1. 연구논문 > 2. College of Dentistry > Dept. of Dental Engineering
Yonsei Authors
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Link
 http://www.sciencedirect.com/science/article/pii/S0040609011002823
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