Abstract
Ca-P-O films were prepared by laser CVD using Ca(dpm)2 and (C6H5O)3PO metal organic precursors. The crystal phase of Ca-P-O films changed depending on deposition temperature (Tdep), total pressure (Ptot), laser power (PL) and molar ratio of Ca to P (RCa/p). β-TCP films in a single phase were obtained in a P-rich and high 7dep region, while HAp films in a single phase were obtained in a Ca-rich and low Tdep region. The β-TCP films had a (220) orientation with an elongated and angular roof-shaped surface texture, whereas HAp films had a (300) orientation with a granular surface texture. Both the β-TCP film and the HAp film had a dense cross section. The Ca-P-O films were immersed in a Hanks' solution for 6 h to 7 d. Particle-shaped precipitates were observed on the β-TCP and HAp films after 3 d immersion. Needle-shaped precipitates covered the whole surface of HAp film after 7d immersion.
Original language | English |
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Pages (from-to) | 2455-2459 |
Number of pages | 5 |
Journal | Materials Transactions |
Volume | 50 |
Issue number | 10 |
DOIs | |
Publication status | Published - 2009 Oct |
Keywords
- Hanks' solution
- Hydroxyapatite
- Laser chemical vapor deposition (CVD)
- β-tricalcium phosphate
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering