Abstract
Nano-sized, spherically shape and monodispersed hydroxyapatite (HA) powders were prepared by a high temperature flame spray pyrolysis process. The powders prepared from the aqueous spray solution without ethyl alcohol had a bimodal size distribution with nanometre and submicrometre sizes. Nano-sized and monodisperse HA powders were prepared when the volume ratio (ethyl alcohol/distilled water, V/V) in the mixed solvent was 1: 2. Nano-sized HA powders were formed from the evaporated vapors by a chemical vapor deposition (CVD) process. The mean size of the HA powders measured from TEM images was 37 nm. The composition ratio of calcium and phosphorous components of the nano-sized HA powders was 1.63. The nano-sized powders obtained from the spray solution with a volume ratio of ethyl alcohol to distilled water at 1 : 2 had a phase pure hexagonal-dipyramidal structure of HA.
Original language | English |
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Pages (from-to) | 628-632 |
Number of pages | 5 |
Journal | Journal of Ceramic Processing Research |
Volume | 10 |
Issue number | 5 |
Publication status | Published - 2009 Oct |
Externally published | Yes |
Keywords
- Chemical vapor deposition
- Flame spray pyrolysis
- Hydroxyapatite
- Nano powder
ASJC Scopus subject areas
- Ceramics and Composites