Formation of a new bioactive glass-ceramic

Dean-Mo LIu*, Hsien Ming Chou

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

A new bioactive glass-ceramic with a nominal composition of CaO (54.5), MgO (6.0), SiO2 (32.8), P2O5 (6.1) and CaF2 (0.6), by weight ratio, has been developed. The crystalline phases termed hydroxyfluoroxyapatite, akermanite, and wollastonite were found to be present simultaneously at a temperature of 930°C. Furthermore, no cracks appear after the bulk glass is crystallized. This newly developed glass-ceramic has an average flexural strength of 233 MPa and a fracture toughness of 2.95 MPa m1/2, which are higher values than for dense hydroxyapatite and known glass-ceramic. An apatite layer containing Ca, P and Si is formed on the surface after the glass-ceramic is soaked in a simulated body fluid for a short period of time, which is indicative of a high bioactivity.

Original languageEnglish
Pages (from-to)7-10
Number of pages4
JournalJournal of Materials Science: Materials in Medicine
Volume5
Issue number1
DOIs
StatePublished - 1 Jan 1994

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