Changes in hydroxyapatite powder properties via heat treatment

The properties of hydroxyaptite (HA) powder, especially its physical one, are largely influenced by the heat treatment process. Controlling of these changes is vital in deciding the suitability of applying this powder in wet processing routes for green body fabrication. Chemically, the crystallinity...

Full description

Saved in:
Bibliographic Details
Published in:Bulletin of materials science 2015-12, Vol.38 (7), p.1807-1819
Main Authors: AHMED, Y M Z, EL-SHEIKH, S M, ZAKI, Z I
Format: Article
Language:English
Subjects:
Acrylic resins
Chemical properties
Chemistry and Materials Science
Engineering
Fourier transforms
Heat treatment
Hydroxyapatite
Materials Science
Particle size
Particle size distribution
Physical properties
Polymers
Pore size distribution
Roasting
Surfactants
Temperature
Turbidity
Viscosity
Wet processing
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The properties of hydroxyaptite (HA) powder, especially its physical one, are largely influenced by the heat treatment process. Controlling of these changes is vital in deciding the suitability of applying this powder in wet processing routes for green body fabrication. Chemically, the crystallinity of the HA powder was found to be largely enhanced with the increase in calcination temperatures. In contrary, a high retardation in the carbonate ion content was found. Physically, all the powder properties in terms of particle size, its distribution, pore volume, pore size and surface area are considerably varied with calcination temperatures. It was found that HA powder calcined at both 1000 and 1100 ∘ C possesses reasonable physico-chemical properties for being applied in wet processing routes. Using heat-treated powder at 1000 and 1100 ∘ C with 0.3 wt% sodium polyacrylate (as a dispersing agent) turned out to be beneficial in developing a low viscosity and high turbidity suspensions.
ISSN:0250-4707
0973-7669
DOI:10.1007/s12034-015-1047-0