Sintering effects of mullite-doping on mechanical properties of bovine hydroxyapatite


Yetmez M., Erkmen Z. E. , Kalkandelen C., Ficai A., Oktar F. N.

MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS, vol.77, pp.470-475, 2017 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 77
  • Publication Date: 2017
  • Doi Number: 10.1016/j.msec.2017.03.290
  • Title of Journal : MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
  • Page Numbers: pp.470-475
  • Keywords: Sintering, Mechanical properties, Bovine derived hydroxyapatite, Mullite, PHASE-STABILITY, COMPOSITES, SHELLS, BHA, POWDERS

Abstract

In this study, sintering effects on microstructural behavior of bovine derived hydroxyapatite doped with powder mullite are considered in the temperature range between 1000 C-omicron and 1300 C-omicron. Results show that maximum values of both compressive strength and microhardness are achieved in the samples sintered at 1200 C-omicron for all mullite additions of 5, 7.5, 10 and 12.5 wt. Moreover, above 1000 C-omicron, decomposition of HA and new phase formations such as whitlockite and gehlenite play a major role in both compressive strength and microhardness properties which increase up to 10 wt mullite reinforcement. (C) 2017 Elsevier B.V. All rights reserved.