Preparation and evaluation of hydroxyapatite with addition of amorphous SiO2

Atsushi Nakahira, Kentaro Nakata, Mitsutaka Sato

Research output: Contribution to journalArticlepeer-review


Hydroxyapatite (HAP) possesses extremely high ability of bioactivity and ion exchange. In this study, hydroxyapatite containing amorphous silica was prepared by heat-treatment in air atmosphere for the mixture of hydroxyapatite and amorphous silica powders in order to develop the high performance modified hydroxyapatites. Their microstructures of the samples prepared by heat-treatment at various temperatures were examined by scanning electron microscopy (SEM) and their characterizations were evaluated with X-ray diffraction (XRD) and fourier transform infrared spectrophotometry (FT-IR) and so on. XRD results indicated that the incorporation of Si ion as a SiO44- into PO 43- site arose the increase of lattice constants for hydroxyapatite structure. These results suggested that SiO4 4 was substituted to PO43- site in HAP structures, leading to the successful synthesis of Si-incorporated hydroxyapatite.

Original languageEnglish
Pages (from-to)533-536
Number of pages4
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Issue number7
Publication statusPublished - 2010 Jul


  • FT-IR
  • Hydroxyapatite
  • Microstructure
  • Preparation
  • Substitution


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