Abstract
Plasma sprayed hydroxyapatite (HA) coatings have been widely used for dental and orthopedic applications for fast fixation between the implant and the human anatomy. In this study, the HA coatings were atmospherically plasma sprayed (APS) using different spray power and stand-off distance (SOD), and the coating surfaces were characterized using various methods. X-ray diffraction (XRD) revealed the presence of crystalline HA, amorphous calcium phosphate (ACP) and some other crystalline phases including tricalcium phosphate (α-TCP and β-TCP), tetracalcium phosphate (TTCP) and calcium oxide (CaO). Fourier transform infrared (FTIR) spectroscopy showed that both OH and PO43- bands of HA changed after spraying and the HA phase identified by XRD was actually the solid solution of oxyapatite (OAp) in HA, i.e., oxyhydroxyapatite (OHA). The phase composition of the HA coatings varied with respect to the spray power and SOD. The surface morphology and roughness were analyzed via scanning electron microscopy (SEM) and profilometry respectively, and the results related to the phase composition.
| Original language | English |
|---|---|
| Pages (from-to) | 251-258 |
| Number of pages | 8 |
| Journal | Ceramic Engineering and Science Proceedings |
| Volume | 21 |
| Issue number | 4 |
| Publication status | Published - 2000 |
| Externally published | Yes |
| Event | 24th Annual Conference on Composites, Advanced Ceramics, Materials,and Structures:B - Cocoa Beach, FL, USA Duration: Jan 23 2000 → Jan 28 2000 |
ASJC Scopus Subject Areas
- Ceramics and Composites
- Materials Chemistry