Aqueous gel-casting of hydroxyapatite

被引：38

作者：

Chen, Biqin ^{[1
]}

Zhang, Zhaoquan ^{[1
]}

Zhang, Jingxian ^{[1
]}

Dong, Manjiang ^{[1
]}

Jiang, Dongliang ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2006年 / 435卷

基金：

中国国家自然科学基金;

关键词：

colloidal processing; gel-casting; hydroxyapatite; suspensions; sintering;

D O I：

10.1016/j.msea.2006.07.028

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In the present work, an aqueous gel-casting of hydroxyapatite using a new polymeric system has been investigated. The effects of the dispersant, pH values on the dispersing ability of HA powder were studied and the rheological behavior of the slurries was investigated. The green body has a density of 1.621 g/cm(3) and compressive strength as 32.6 +/- 3.2 MPa. After pressureless sintering at 1250 degrees C for 2 h the relative density of the final product is about 96.7%. Bending strength, elasticity modulus and hardness are 84.6 +/- 12.6 MPa, 138 +/- 7 GPa and 4.44 +/- 0.35 GPa, respectively. SEM images show a compact and uniform microstructure; XRD and FTIR determined the phase and the radical preserved after sintering. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：198 / 203

页数：6

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