Formation of needle-like hydroxyapatite by hydrothermal treatment of CaHPO_4・2H_2O combined with β-Ca_3(PO_4)_2
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概要
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Conditions were investigated for preparing needle-like hydroxyapatite (HAp; Ca10(PO4)6(OH)2) by hydrothermal processing of mixed calcium phosphate powders consisting of dicalcium phosphate dihydrate (DCPD; CaHPO4·2H2O) and beta-tricalcium phosphate (β-TCP; β-Ca3(PO4)2). The powder mixture was subjected to two-step hydrothermal processing in which the compacted powder was treated first by exposure to vapor of the liquid and subsequently by immersion in the liquid. High aspect ratios were obtained in samples with crystal sizes around 60 μm in length from the reactant mass ratio composition of β-TCP/DCPD = 1/9 by treatment at 160°C for 0.5 h under vapor conditions, followed by liquid conditions for 24 h with renewal of the liquid at 12 h. Initial compositions and pH conditions were the main parameters determining the formation of needle-like HAp by hydrothermal processing.
- 公益社団法人 日本セラミックス協会の論文
- 2009-06-01
著者
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KAMITAKAHARA Masanobu
Graduate School of Environmental Studies, Tohoku University
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OHTSUKI Chikara
Graduate school of Engineering, Nagoya University
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Kamitakahara Masanobu
Graduate School Of Environmental Studies Tohoku University
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Kamitakahara Masanobu
Graduate School Of Environmental Studies Tohoku Univ.
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Ohtsuki Chikara
Department Of Crystalline Materials Science Graduate School Of Engineering Nagoya University
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Ohtsuki Chikara
Graduate School Of Engineering Nagoya Univ.
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Ohtsuki C
Department Of Crystalline Materials Science Graduate School Of Engineering Nagoya University
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Ohtsuki Chikara
Dep. Of Crystalline Materials Sci. Graduate School Engineering Nagoya Univ.
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Ohtsuki Chikara
奈良先端科学技術大学院大学 物質創成科学研究科
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KAWACHI Giichiro
Department of Biomaterials, Faculty of Dental Science, Kyushu University
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Kawabata Koji
Industrial Technol. Center Of Okayama Prefecture
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Ohtsuki Chikara
Graduate School Of Engineering Nagoya University
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KAWACHI Giichiro
Graduate School of Engineering, Nagoya University
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WATANABE Tomoko
Graduate School of Engineering, Nagoya University
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KIKUTA Koichi
Graduate School of Engineering, Nagoya University
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Watanabe Tomoko
Graduate School Of Engineering Nagoya University
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Kawabata Koji
Department Of Crystalline Materials Science Graduate School Of Engineering Nagoya University
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