Microstructure and mechanical property of synthesized hydroxyapatite prepared by colloidal process

被引：26
|
作者：
Yasuda, HY
Mahara, S
Umakoshi, Y
Imazato, S
Ebisu, S
机构：
[1] Osaka Univ, Grad Sch Engn, Dept Mat Sci & Engn, Suita, Osaka 5650871, Japan
[2] Osaka Univ, Fac Dent, Dept Conservat Dent, Suita, Osaka 5650871, Japan
来源：
BIOMATERIALS | 2000年 / 21卷 / 20期
基金：
日本学术振兴会;
关键词：
hydroxyapatite; biomaterial; colloidal process; bone; sintering;
D O I：
10.1016/S0142-9612(00)00090-9
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
Synthesized hydroxyapatite (HAp) was prepared by the colloidal process. Mixed slurry composed of 25 vol% HAp powder and 75 vol% aqueous solution containing a small amount of polycarboxylic acid ammonium as dispersant was produced. Viscosity of the HAp slurry, microstructure and mechanical property of the synthesized HAp prepared by this process depends on the quantity of dispersant. A mainly uniform microstructure was obtained in both green and sintered HAP with 2 wt% dispersant by preventing the agglomeration of powder in the slurry. A homogeneous microstructure was maintained even after annealing at temperatures between 1200 and 1400 degrees C, Maximum bending strength of 88.5 MPa was also obtained at an optimum dispersant concentration. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：2045 / 2049
页数：5
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