Paper Title:
Synthesis and Stability of Potassium/Carbonate Co-Substituted Hydroxyapatites
  Abstract

A systematic study of the stability of potassium/carbonate co-substituted hydroxyapatite has been carried out, with samples synthesized by aqueous precipitation according to the chargebalanced mechanism: Ca10-xKx(PO4)6-x(CO3)x(OH)2 Samples up to x=1.0 were prepared and their stability determined by heating at a range of temperatures in both air and CO2 environments. Results showed that whilst samples up to x=1.0 can be prepared phase-pure, the stability of these materials is strongly dependent on sintering temperature with the full range of compositions only being stable at 600°C in CO2. The c unit cell parameter increases linearly with x, and, for a fixed composition, decreases linearly with temperature indicating loss of carbonate from the A-site. FTIR showed that samples contained carbonate at both A- and B-sites, and that carbonate content increased with x.

  Info
Periodical
Key Engineering Materials (Volumes 361-363)
Main Theme
Edited by
Guy Daculsi and Pierre Layrolle
Pages
207-210
DOI
10.4028/www.scientific.net/KEM.361-363.207
Citation
J. Whyte, D.J. Hadden, I. R. Gibson, J.M.S. Skakle, "Synthesis and Stability of Potassium/Carbonate Co-Substituted Hydroxyapatites", Key Engineering Materials, Vols. 361-363, pp. 207-210, 2008
Online since
November 2007
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: C.A.O. Ramirez, Andrea Machado Costa, J. Bettini, Antonio J. Ramirez, Marcelo Henrique Prado da Silva, Antonella M. Rossi
Abstract:B-type carbonate apatite samples were synthesized by wet chemical method and characterized by X-ray Fluorescence Spectrometry, X-ray...
611
Authors: Mohd Noor Ahmad Fauzi, Harmiza Zainudin
Chapter 2: Materials for Biomedical Application
Abstract:Sintering has major effect on the final properties of materials such as density, porosity and microstructure. Sintering of Mg-Si CHA in...
88