Fracture toughness of hydroxyapatite/mica composite, packed hydroxyapatite, alumina ceramics, silicon nitride and -carbide

E. G. Nordström, Toshimitsu Yokobori, T. Yokobori, Y. Aizawa

    Research output: Contribution to journalArticlepeer-review

    Abstract

    By using the fracture toughness estimation method based on two- dimensional map, it was found that the ductility of the high porosity hydroxyapatite/mica composite was comparable with silicon carbide. It was measured to be higher than that of packed hydroxyapatite. Alumina ceramics with more than 96% aluminum oxide showed a higher fracture toughness than the composite material. When bending strength was compared, the strength of the composite was two or three times lower than that of packed hydroxyapatite and much lower than the other studied materials. The composite material showed high porosity, which in turn gives it a lower bending strength. However, the high porosity is more favourable for biocompatibility.

    Original languageEnglish
    Pages (from-to)37-43
    Number of pages7
    JournalBio-medical materials and engineering
    Volume8
    Issue number1
    Publication statusPublished - 1998 Dec 1

    Keywords

    • Ceramic
    • Composites
    • Fracture toughness
    • Hydroxy(1)apatite

    ASJC Scopus subject areas

    • Biomaterials
    • Biomedical Engineering

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