Formation of hydroxyapatite within porous TiO2 layer by micro-arc oxidation coupled with electrophoretic deposition

Dong Yoon Kim, Miyoung Kim, Hyoun Ee Kim, Young Hag Koh, Hae Won Kim, Jun Hyeog Jang

Research output: Contribution to journalArticlepeer-review

128 Citations (Scopus)


Micro-arc oxidation (MAO) is commonly used to modify the surface of Ti-based medical implants with a bioactive and porous titanium oxide (TiO2) layer. This study reports a novel method of incorporating hydroxyapatite (HA) within the TiO2 layer by coupling MAO with an electrophoretic deposition (EPD) process. A HA-incorporated, porous TiO2 layer was produced successfully on the Ti substrate using the EPD-coupled MAO treatment, as confirmed by electron microscopy observations. Addition of ethanol to the electrolyte solution containing the fine HA particles was essential to reduce the level of gaseous emission on the anode, which obstructs the attachment of HA particles. In vitro cellular assays showed that the incorporation of HA significantly improved the osteoblastic activity on the coating layer.

Original languageEnglish
Pages (from-to)2196-2205
Number of pages10
JournalActa Biomaterialia
Issue number6
Publication statusPublished - 2009 Jul


  • Electrophoretic deposition (EPD)
  • Hydroxyapatite
  • Micro-arc oxidation (MAO)
  • Titanium
  • Titanium oxide

ASJC Scopus subject areas

  • Biotechnology
  • Biomaterials
  • Biochemistry
  • Biomedical Engineering
  • Molecular Biology


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