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全文: "杉田智和"
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  • 大門 啓志, 呉 敏, 杉田 智和, 引地 康夫, 松原 孝至, 太田 敏孝, 可児 良弘
    Journal of the Society of Inorganic Materials, Japan
    2001年 8 巻 293 号 283-288
    発行日: 2001/07/01
    公開日: 2011/03/07
    ジャーナル フリー
    A commercial hydroxyapatite, which has been regarded as a powder with low sinterability, was ground by four kinds of wet ball-milling in order to improve the sinterability. The effect of the grinding on the sinterability was investigated by comparing the four methods. When the powder was ground under water as a dispersion media, fine particles generated by the grinding cohere to reconstruct aggregates, then milling effects disappear. The fine particles without reconstructed aggregates can be obtained by ball-milling under ethyl alcohol as a dispersion media. The grinding efficiency can be improved by using balls with a high true density. The sizes of aggregates were diminished to 0.1-0.2μm by ball-milling using nylon coated iron balls. The powder ground by the nylon coated iron ball was formed into disks and then heated at 1200°C for 1 h. The bulk density of the sintered body was >98% of the theoretical density.
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