Fabrication of high-dispersibility nanocrystals of calcined hydroxyapatite

Masahiro Okada, Tsutomu Furuzono

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

The fabrication of nano-sized and calcined HAp crystals protected against calcination-induced sintering using an anti-sintering agent interspersed between the particles was studied. Calcium hydroxide was selected as an ant-sintering agent as it would not melt at the calcination temperature, and could be removed by washing with water after calcination. Starting HApparticles with low crystallity were prepared with a modified emulsion system at 25°C, and the resulting product was centrifugally washed and redispersed in water. X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR) were performed to examine the effect of Ca(OH)2 on the crystal phase and composition of HAp. The results of the study show that calcination with an an-sintering agent has a potential application to a wide range of calcined nanoceramic powders, such as alumina, titania, and magnesia.

Original languageEnglish
Pages (from-to)6134-6137
Number of pages4
JournalJournal of Materials Science
Volume41
Issue number18
DOIs
Publication statusPublished - Aug 1 2006
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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