Abstract
Calcium titanate (CaTiO3), α-tricalcium phosphate (α-TCP) and hydroxyapatite (HAp) films were prepared by metal-organic chemical vapor deposition (MOCVD) using Ca(dpm)2, Ti(O-i-Pr) 2(dpm)2 and (C6H5O)3PO precursors. The phases, composition and surface morphology of these films changed depending on substrate temperature (Tsub), total pressure (Ptot) and molar ratio of each precursors (RCa/Ti, R Ca/P). The surface morphology of CaTiO3 films changed from granular structure to cauliflower-like texture, and its cross-sectional morphology changed from dense to columnar structure with increasing T sub. α-TCP and HAp films had granular surface and dense cross-sectional morphology. CaTiO3, α-TCP and HAp films were immersed in a Hanks' solution for 28 d. Apatite formation rate strongly depended on the surface morphology of CaTiO3 film, and apatite covered CaTiO3 film having a granular surface after 4 w while CaTiO 3 film having a cauliflower-like texture after 3 d. Apatite covered α-TCP films after 14 d and HAp films after 6 h, respectively. HAp films prepared by MOCVD were promising as bone conductive materials.
Original language | English |
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Pages (from-to) | 461-465 |
Number of pages | 5 |
Journal | Journal of the Ceramic Society of Japan |
Volume | 117 |
Issue number | 1364 |
DOIs | |
Publication status | Published - 2009 Apr |
Keywords
- Apatite
- Bio-ceramics
- Calcium phosphate
- Calcium titanate
- Metal organic chemical vapor deposition
ASJC Scopus subject areas
- Ceramics and Composites
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry