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Microstructure and mechanical property of synthesized hydroxyapatite prepared by colloidal process

Paper ID Volume ID Publish Year Pages File Format Full-Text
13890 940 2000 5 PDF Available
Title
Microstructure and mechanical property of synthesized hydroxyapatite prepared by colloidal process
Abstract

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°C. Maximum bending strength of 88.5 MPa was also obtained at an optimum dispersant concentration.

Keywords
Hydroxyapatite; Biomaterial; Colloidal process; Bone; Sintering
First Page Preview
Microstructure and mechanical property of synthesized hydroxyapatite prepared by colloidal process
Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 21, Issue 20, October 2000, Pages 2045–2049
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering