Paper Title:
Influence of Powder Particle Size of Slurries on Mechanical Properties of Porous Hydroxyapatite Ceramics
  Abstract

The effect of different particle sizes on the flexural strength and microstructure of three different types of hydroxyapatite (HAp) powders was studied. The powder characteristics of laboratory synthesized HAp powder (Lab1 and Lab2) were obtained through a wet milling method, and the median particle size and the specific surface area of powders are different with the dryness period. The median particle sizes of Lab1 and Lab2 are 0.34 µm and 0.74 µm, and the specific surface areas of Lab1 and Lab2 are 38.01 m2/g and 19.77 m2/g. The commercial HAp had median particle size of 1.13 µm and specific surface area of 11.62m2/g. The different powder characteristics affected the slip characteristics, and the flexural strength and microstructure of the sintered porous HAp bodies are also different. The optimum value for the minimum viscosity in these present HAp slip with respect to its solid loading and the optimum amount of the deflocculant were investigated. The flexural strengths of the porous HAp ceramics prepared by heating at 1200°C for 3 hrs in air were 17.59 MPa for Lab1 with a porosity of 60.48%, 10.51 MPa for Lab2 with a porosity of 57.75%, and 3.92 MPa for commercial HAp with a porosity of 79.37%.

  Info
Periodical
Key Engineering Materials (Volumes 284-286)
Main Theme
Edited by
Panjian Li, Kai Zhang and Clifford W. Colwell, Jr.
Pages
365-368
DOI
10.4028/www.scientific.net/KEM.284-286.365
Citation
Y. Zhang, Y. Yokogawa, T. Kameyama, "Influence of Powder Particle Size of Slurries on Mechanical Properties of Porous Hydroxyapatite Ceramics ", Key Engineering Materials, Vols. 284-286, pp. 365-368, 2005
Online since
April 2005
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Hua Zhang Zhai, Hong Nian Cai, Xiao Zhan Yang, Jian Bao Li, Gang Feng Guo, Chuan Bao Cao
Abstract:A series of BN-SiO2 composite ceramics with high relative densities have been fabricated by hot pressing of a mixture of hexagonal boron...
1426
Authors: You Jun Lu, Hong Fang Shen, Yan Ming Wang
Composites
Abstract:High-temperature mechanical properties, machinability, oxidation resistance and thermal shock resistance of different content of carbon...
276
Authors: Xin Yan Yue, Jian Jun Wang, Qi Sun, Hong Qiang Ru
Chapter 2: Engineering Ceramics and Ceramic Composites
Abstract:SiC-TiB2 composite was prepared at 2298 K by using pressureless sintering. The microstructures and mechanical properties of the SiC-TiB2...
812
Authors: Ping Zhao, Shuai Zhao, Tai Rong Zhao, Xue Hua Ren, Feng Wang, Xiu Na Chen
Chapter 1: Material Engineering and its Application Technology
Abstract:Hydroxyapatite whisker was the reinforcement phase to prepare whisker/calcium phosphate cement composites, which was obtained by homogeneous...
30
Authors: Hai Jiang, Chun Yan Tian
Chapter 2: Micro/Nano Materials and Equipments
Abstract:Silicon nitride nanoceramics were fabricated by hot press sintering two kinds of Si3N4 nano-sized powders. The effect...
239