カルシウムヒドロキシアパタイト粉末の特性とその焼結性

DOI Web Site Web Site 被引用文献1件

書誌事項

タイトル別名
  • Affect of Powder Characteristics on the Sinterability of Calcium Hydroxyapatite
  • カルシウムヒドロキシアパタイト フンマツ ノ トクセイ ト ソノ ショウケツセ

この論文をさがす

抄録

Influence of powder characteristics such as specific surface area, agglomerate size and shape, on their microstructures and mechanical properties of green and sintered bodies was studied for seven kinds of calcium hydroxyapatites. A heat treatment above 1300°C gave tricalciumphosphate (TCP) for all powders. Before the formation of TCP, decarbonation took place in carbonate-containing powders above 800°C, while carbonate-free powders were stable up to 1200°C. Powders with high specific surface areas (SSA), especially larger than 40m2/g, had good sinterabilities, and gave dense bodies about 99% relative density after a heat treatment at 1200°C. On the contrary, powders with lower SSA, about 10m2/g, had poor sinterabilities and gave porous bodies. Poor sinterability was mainly ascribed to the stability and needle like shape of the crystallites. Furthermore, presence of large voids among the agglomerates prevented densification of the compacts at the late stage of sintering. The high density Ca-HAP ceramics prepared in this report have mechanical properties comparable with those reported in the literatures.

収録刊行物

  • 窯業協會誌

    窯業協會誌 95 (1103), 703-709, 1987

    公益社団法人 日本セラミックス協会

被引用文献 (1)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ