Porous composite with tunnel-like interconnecting pores of hydroxyapatite with magnetite particles

Koji Ioku, Setsuaki Murakami, Takashi Atsumi, Balachamdran Jeyadevan, Emile Hideki Ishida

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Porous composites of magnetite / hydroxyapatite with bimodal pore size distribution were prepared by hydrothermal method. Magnetite particles of about 1 μrn in size with polyhedral shape were dispersed into hydroxyapatite porous matrix. The hydroxyapatite particles were rod-shaped crystals and the size of crystals were about 10 μm in length with the aspect ratio of over 25. Rod-shaped hydroxyapatite crystals were locked together to make micro-pores of about 0.8 μm in size. In addition, macro-pores of about 400 μm in size were prepared by our unique method. Hydroxyapatite in this composite was non-stoichiometric hydroxyapatite with calcium deficient composition. This composite must have the advantage of adsorptive activity and osteoconductivity, because the hydroxyapatite has many specific crystal surface and micro-pores. The composites of magnetite / hydroxyapatite must be suitable for the hyperthermia therapy of cancer in bones.

Original languageEnglish
Pages (from-to)1039-1042
Number of pages4
JournalKey Engineering Materials
Volume309-311 II
Publication statusPublished - 2006
Externally publishedYes


  • Composite
  • Hydrothermal
  • Hydroxyapatite
  • Hyperthermia
  • Magnetite

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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