Processing of Ca-P Ceramics, Surface Characteristics and Biological Performance

S. Cazalbou, C. Bastié, G. Chatainier, N. Theilgaard, N. Svendsen, R. Martinetti, L. Dolcini, J. Hamblin, G. Stewart, L. Di Silvio, N. Gurav, R. Quarto, S. Overgaard, B. Zippor, A. Lamure, C. Combes, C. Rey

Research output: Contribution to journalArticlepeer-review

Abstract

Surface pollution by Mg and carbon has been identified by X-Ray Photoelectron Spectroscopy (XPS) analysis on monophasic (100% stoichiometric hydroxyapatite) or biphasic (70% hydroxyapatite, 30% β-tricalcium phosphate) ceramics obtained by sintering of Ca-P powder of standard purity. Magnesium was the main impurity, although it is present only as traces in synthesised Ca-P powders, it concentrates on the surface of the ceramic during the sintering process due to its poor solubility in HA. Carbon pollution is common on all materials and generally assigned to the adsorption of atmospheric volatile organic compounds, although other types of pollution may occur. These surface species alter the surface energy of the ceramics which has been shown to be related to cell adhesion, The change in surface composition and physical properties can interfere with the sintering process as well as with the biological behaviour of the ceramics and a special effort should be made to control these events at all levels from processing to handling, storage and packaging.

Original languageEnglish
Pages (from-to)833-836
Number of pages4
JournalKey Engineering Materials
Volume254-256
Publication statusPublished - 2004

Keywords

  • Apatite
  • Surface energy
  • Tri-calcium phosphate
  • XPS

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemical Engineering (miscellaneous)

Fingerprint Dive into the research topics of 'Processing of Ca-P Ceramics, Surface Characteristics and Biological Performance'. Together they form a unique fingerprint.

Cite this