Low temperature synthesis of hydroxyapatite from CaHPO4·2H2O and Ca(OH)2 based on effect of the spark plasma system (SPS)

Mamoru Omori; Takamasa Onoki; Toshiyuki Hashida; Akira Okubo; Yoshihiro Murakami

doi:10.1016/j.ceramint.2005.04.021

Low temperature synthesis of hydroxyapatite from CaHPO₄·2H₂O and Ca(OH)₂ based on effect of the spark plasma system (SPS)

Mamoru Omori, Takamasa Onoki, Toshiyuki Hashida, Akira Okubo, Yoshihiro Murakami

工学研究科・附属先端材料強度科学研究センター

研究成果: Article › 査読

11 被引用数 (Scopus)

抄録

A mixture of 6 mol of CaHPO₄·2H₂O and 4 mol of Ca(OH)₂ was reacted to produce hydroxyapatite (HA) by spark plasma system (SPS). The reaction was carried out at 300-1200 °C under pressure of 20-670 MPa for 10 min in a vacuum. HA formation started at 300 °C at 600 MPa and was completed at 500 °C at 670 MPa, the same product being obtained at 1200 °C in air using a furnace. The temperature of the HA formation increased with decreasing pressure and was 1150 °C under 20 MPa. There was a linear relationship between the reaction temperature and pressure. The crystal size of the HA prepared at 500 °C at 670 MPa and that at 600 °C at 600 MPa by SPS were less than 1 and 2 μm, respectively.

本文言語	English
ページ（範囲）	617-621
ページ数	5
ジャーナル	Ceramics International
巻	32
号	6
DOI	https://doi.org/10.1016/j.ceramint.2005.04.021
出版ステータス	Published - 2006

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

文献へのアクセス

10.1016/j.ceramint.2005.04.021

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引用スタイル

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title = "Low temperature synthesis of hydroxyapatite from CaHPO4·2H2O and Ca(OH)2 based on effect of the spark plasma system (SPS)",

abstract = "A mixture of 6 mol of CaHPO4·2H2O and 4 mol of Ca(OH)2 was reacted to produce hydroxyapatite (HA) by spark plasma system (SPS). The reaction was carried out at 300-1200 °C under pressure of 20-670 MPa for 10 min in a vacuum. HA formation started at 300 °C at 600 MPa and was completed at 500 °C at 670 MPa, the same product being obtained at 1200 °C in air using a furnace. The temperature of the HA formation increased with decreasing pressure and was 1150 °C under 20 MPa. There was a linear relationship between the reaction temperature and pressure. The crystal size of the HA prepared at 500 °C at 670 MPa and that at 600 °C at 600 MPa by SPS were less than 1 and 2 μm, respectively.",

keywords = "Calcium phosphate, Hydroxyapatite, Hydroxyapatite synthesis, Spark plasma sintering (SPS), Spark plasma system (SPS)",

author = "Mamoru Omori and Takamasa Onoki and Toshiyuki Hashida and Akira Okubo and Yoshihiro Murakami",

note = "Funding Information: This study was supported by Research on Advanced Medical Technology in Health and Labour Sciences Research Grants from the Ministry of Health, Labour and Welfare of Japan. The authors are thankful to Mr. Shun Ito (Institute for Materials Research, Tohoku University) for transmission electron microscope, observations. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

year = "2006",

doi = "10.1016/j.ceramint.2005.04.021",

language = "English",

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pages = "617--621",

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AU - Omori, Mamoru

AU - Onoki, Takamasa

AU - Hashida, Toshiyuki

AU - Okubo, Akira

AU - Murakami, Yoshihiro

N1 - Funding Information: This study was supported by Research on Advanced Medical Technology in Health and Labour Sciences Research Grants from the Ministry of Health, Labour and Welfare of Japan. The authors are thankful to Mr. Shun Ito (Institute for Materials Research, Tohoku University) for transmission electron microscope, observations. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2006

Y1 - 2006

N2 - A mixture of 6 mol of CaHPO4·2H2O and 4 mol of Ca(OH)2 was reacted to produce hydroxyapatite (HA) by spark plasma system (SPS). The reaction was carried out at 300-1200 °C under pressure of 20-670 MPa for 10 min in a vacuum. HA formation started at 300 °C at 600 MPa and was completed at 500 °C at 670 MPa, the same product being obtained at 1200 °C in air using a furnace. The temperature of the HA formation increased with decreasing pressure and was 1150 °C under 20 MPa. There was a linear relationship between the reaction temperature and pressure. The crystal size of the HA prepared at 500 °C at 670 MPa and that at 600 °C at 600 MPa by SPS were less than 1 and 2 μm, respectively.

AB - A mixture of 6 mol of CaHPO4·2H2O and 4 mol of Ca(OH)2 was reacted to produce hydroxyapatite (HA) by spark plasma system (SPS). The reaction was carried out at 300-1200 °C under pressure of 20-670 MPa for 10 min in a vacuum. HA formation started at 300 °C at 600 MPa and was completed at 500 °C at 670 MPa, the same product being obtained at 1200 °C in air using a furnace. The temperature of the HA formation increased with decreasing pressure and was 1150 °C under 20 MPa. There was a linear relationship between the reaction temperature and pressure. The crystal size of the HA prepared at 500 °C at 670 MPa and that at 600 °C at 600 MPa by SPS were less than 1 and 2 μm, respectively.

KW - Calcium phosphate

KW - Hydroxyapatite

KW - Hydroxyapatite synthesis

KW - Spark plasma sintering (SPS)

KW - Spark plasma system (SPS)

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JO - Ceramics International

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