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

Min Ho Hong, Dong Hyun Lee, Kwang Mahn Kim, Yong Keun Lee

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)


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. Crown

Original languageEnglish
Pages (from-to)7065-7070
Number of pages6
JournalThin Solid Films
Issue number20
Publication statusPublished - 2011 Aug 1

Bibliographical note

Funding Information:
This study was supported by the Korea Research Foundation Grant funded by the Korean Government ( KRF-2008-313-E00545 ).

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry


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