Paper Title:
Effect of Cooling Rate and Particle Size on Compressive Strength of Macroporous Hydroxyapatite
  Abstract

The objective of this study was to produce a macroporous hydroxyapatite(HA) scaffold with high strength by controlling the size of HA particles as well as cooling rate from the sintering temperature. Macroporous polyurethane sponge was employed as template to manufacture the macroporous HA scaffolds. Particle sizes of HA powders selected in this study were 4 µm and 7 µm. They were dispersed in distilled water with organic additives and infiltrated into polyurethane sponge. After drying and sintering at 1300oC, cooled down to room temperature slowly to prevent microcracking either 1oC/min or 3oC/min. Density, porosity and compressive strength were measured with different particle size and cooling rate. Both density and compressive strength were increased with decreasing particle size or cooling rate, while porosity was not related to.

  Info
Periodical
Key Engineering Materials (Volumes 309-311)
Main Theme
Edited by
Takashi Nakamura, Kimihiro Yamashita and Masashi Neo
Pages
1047-1050
DOI
10.4028/www.scientific.net/KEM.309-311.1047
Citation
Y. U. Kim, B. H. Lee, M. C. Kim, K. N. Kim, K. M. Kim, S. H. Choi, C. K. Kim, R. Z. LeGeros, Y. K. Lee, "Effect of Cooling Rate and Particle Size on Compressive Strength of Macroporous Hydroxyapatite ", Key Engineering Materials, Vols. 309-311, pp. 1047-1050, 2006
Online since
May 2006
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: Kyung Sik Oh, Soo Ryong Kim
Abstract:Effect of the starting compostion was studied in bone cement containg coarse b-tricalcium phosphate (b-TCP) granules which was very dense and...
141
Authors: J.W. Paek, Beom Seob Kim, Deug Joong Kim
Abstract:Ceramic foams containing MoSi2 were prepared by a self-blowing process of poly-silsesquioxane with MoSi2 as filler. Ceramic foams prepared by...
129
Authors: Szilvia Eosoly, Stefan Lohfeld, Dermot Brabazon
Abstract:Selective laser sintering (SLS) has the potential to fabricate bioresorbable polymer / ceramic composite scaffolds with pre-designed external...
659
Authors: Joo Eon Park, Mitsugu Todo
Abstract:Novel reinforcements such as beam, film, and porous frame were developed to improve the mechanical properties of poly(L-lactide) (PLLA)...
303
Authors: Jun Li, Wen Jie Yuan, Cheng Ji Deng, Hong Xi Zhu
Chapter 12: Ceramic, Refractory and Strong Materials
Abstract:Effect of different sintering additives on reaction-bonded Si3N4/SiC composite ceramics under pressureless was investigated. Si3N4/SiC...
2349