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

被引：10

作者：

Omori, Mamoru

Onoki, Takamasa

Hashida, Toshiyuki

Okubo, Akira

Murakami, Yoshihiro

机构：

[1] Tohoku Univ, Fracture & Reliabil Res Inst, Grad Sch Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan

[2] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan

来源：

CERAMICS INTERNATIONAL | 2006年 / 32卷 / 06期

关键词：

hydroxyapatite; hydroxyapatite synthesis; spark plasma system (SPS); spark plasma sintering (SPS); calcium phosphate;

D O I：

10.1016/j.ceramint.2005.04.021

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A mixture of 6 mol of CaHPO4 center dot 2H(2)O 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 degrees C under pressure of 20-670 MPa for 10 min in a vacuum. HA formation started at 300 degrees C at 600 MPa and was completed at 500 degrees C at 670 MPa, the same product being obtained at 1200 degrees C in air using a furnace. The temperature of the HA formation increased with decreasing pressure and was 1150 degrees C under 20 MPa. There was a linear relationship between the reaction temperature and pressure. The crystal size of the HA prepared at 500 degrees C at 670 MPa and that at 600 degrees C at 600 MPa by SPS were less than 1 and 2 mu m, respectively. (C) 2005 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：617 / 621

页数：5

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