Sintering of Hydroxyapatite Powders with SiC Platelets Dispersion

Tatsuo NOMA; Noriyuki SHOJI; Satoshi WADA; Takeyuki SUZUKI

doi:10.2109/jcersj.100.1175

Tatsuo NOMA, Noriyuki SHOJI, Satoshi WADA, Takeyuki SUZUKI

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Keywords: Hydroxyapatite, Silicon carbide, Platelet, Composite ceramics, Hydrothermal, Composite particle

JOURNAL FREE ACCESS

1992 Volume 100 Issue 1165 Pages 1175-1178

DOI https://doi.org/10.2109/jcersj.100.1175

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Abstract

Hydroxyapatite (HAp) powders with SiC platelets dispersion were synthesized by a wet process (at 98°C for 24h) and hydrothermal process (at 150°C, 0.5MPa for 4h). The transmission electron microscopy showed that SiC platelets were homogeneously surrounded by fine HAp crystals. The SiC-HAp composites were sintered at various temperatures. SiC loading obstructed the densification but improved the Vickers hardness up to 1.3 times that of pure HAp ceramics.

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