Bone-like apatite-forming ability of Ca3(PO4) 2-CaMg(SiO3)2 ceramics in simulated body fluid

R. G. Carrodeguas, E. Córdoba, A. H. De Aza, S. De Aza, P. Pena

Research output: Contribution to journalArticle in an indexed scientific journalpeer-review

10 Scopus citations

Abstract

In this study a ceramic composite with nominal composition 40 wt% Ca 3(PO4)2 - 60 wt% CaMg(SiO3) 2 was obtained by solid state sintering of compacts of both synthetic fine powders. The ceramic composite showed a fine grained and homogeneous microstructure consisting of CaMg(SiO3)2 and β-Ca3(PO4)2 grains. The results of X-ray diffraction and scanning electron microscopy demonstrated that, during soaking in SBF, the grains of β-Ca3(PO4)2 dissolved preferably than those of CaMg(SiO3)2, leaving a porous surface layer rich in CaMg(SiO3)2. Subsequently, partial dissolution of the remaining CaMg(SiO3)2 occurred and the porous surface of the β-Ca3(PO4) 2-CaMg(SiO3)2 ceramic became coated by a bone-like apatite layer after 7 days in SBF.

Original languageEnglish
Pages (from-to)103-106
Number of pages4
JournalKey Engineering Materials
Volume396-398
StatePublished - 2009
Externally publishedYes

Keywords

  • Apatite
  • Bioactivity
  • Ceramics
  • Diopside
  • Simulated body fluid
  • Tricalcium phosphate

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