Sintering effects on mechanical properties of bioglass reinforced hydroxyapatite composites

G. Goller*, F. N. Oktar, H. Demirkiran, E. Demirkesen

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

7 Citations (Scopus)


The improvement of mechanical properties of HA with reinforcement of 5 and 10 wt % bioglass (45S5) with different sintering temperatures was studied. Although HA shows good biocompatibility with human body, its applications are limited to nonload-bearing areas due to its low mechanical properties. In this study naturally produced HA from human teeth is sintered with varying addition of 5 wt % and 10 wt % bioglass at 1200 and 1300°C for 4 hours. The density, microhardness measurements and compressive tests are performed and microstructural characterizations are carried out in order to find the optimum sintering temperature. Finally average hardness value of 383±60 HV (kg/mm2), average density of 2.72±0.01g/cm3, and compressive strength value of σavr=82.96±34 MPa were achieved by sintering at 1200°C with the addition of 10 wt % bioglass in HA.

Original languageEnglish
Pages (from-to)939-942
Number of pages4
JournalKey Engineering Materials
Publication statusPublished - 2003
EventProceedings of the 15th International Symposium on Ceramics in Medicine; The Annual Meeting of the International Society for Ceramics in Medicine - Sydney, NSW, Australia
Duration: 4 Dec 20028 Dec 2002


  • Bioglass
  • Composite
  • Dental materials
  • Hydroxyapatite
  • Mechanical properties


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