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
收藏
页码：617 / 621
页数：5
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