Spherical shape hydroxyapatite powders prepared by flame spray pyrolysis

Jung Sang Cho, Dae Soo Jung, Jin Man Han, Yun Chan Kang

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Micrmetre-sized HA powders with dense or porous morphologies were prepared by flame spray pyrolysis from a spray solution with citric acid and ethylene glycol. The powders prepared by high temperature flame spray pyrolysis had hexagonal-dipyramidal structures of HA regardless of the flow rates of the carrier gas. When the carrier gas flow rate was 20 Lminute-1, the powders prepared had a micrometre size, spherical shape and dense morphology. The mean size of the HA powders with a spherical shape and dense morphology was 1.1 μm. However, the powders prepared at high flow rates of carrier gas above 30 Lminute-1 had sizes of several micrometre and porous morphologies. The composition ratio of calcium and phosphorous components of the HA powders with a spherical shape and dense morphology was 1.69. The morphology of the micrometre-sized powders with a spherical shape and dense morphology was maintained after post-treatment at a temperature of 900 °C.

Original languageEnglish
Pages (from-to)348-352
Number of pages5
JournalJournal of Ceramic Processing Research
Volume9
Issue number4
Publication statusPublished - 2008
Externally publishedYes

Keywords

  • Flame spray pyrolysis
  • Hydroxyapatite
  • Tricalcium phosphate

ASJC Scopus subject areas

  • Ceramics and Composites

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