Fabrication and mechanical properties of β-TCP pieces by gel-casting method

被引：22

作者：

Chen, Biqin ^{[1
]}

Zhang, Zhaoquan ^{[1
]}

Zhang, Jingxian ^{[1
]}

Lin, Qingling ^{[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 & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS | 2008年 / 28卷 / 07期

基金：

美国国家科学基金会;

关键词：

gel-casting; beta-TCP ceramics; suspensions; mechanical properties;

D O I：

10.1016/j.msec.2007.04.034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present work, dense beta-TCP ceramics were fabricated by gel-casting method. The effects of the solids loading on the rheological behavior of beta-TCP slurries were investigated. When the concentration of the slurries was increased from 40 to 60 vol.%, the compressive strength of green pieces was raised from 12.4 +/- 1.1 to 41.2 +/- 2.3 MPa, and flexural strength from 9.4 +/- 0.4 to 16.3 +/- 0.9 MPa. The density of the final specimens was 97.4% of the theoretical density after pressureless sintering at 1100 degrees C. The compressive strength, flexural strength, elasticity modulus and the fracture toughness of the sintered pieces were 291 +/- 15 MPa, 93.0 +/- 8.7 Mpa, 72.4 +/- 7.5 GPa and 0.92 +/- 0.04 Mpa.m(0.5) respectively. SEM images show a compact and uniform microstructure; XRD and FTIR determined the phase and the radical before and after sintering. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：1052 / 1056

页数：5

共 21 条

[1] DENSE POLYCRYSTALLINE BETA-TRICALCIUM PHOSPHATE FOR PROSTHETIC APPLICATIONS [J].