Articles
  • Reinforcement of sheep-bone derived hydroxyapatite with bioactive glass
  • Nazmi Ekrena,b,*
  • a Advanced Nanomaterials Research Laboratory at Marmara University, Istanbul, Goztepe, Campus, 34722, Turkey b Department of Electrical and Electronic Engineering, Faculty of Technology, Marmara University, Goztepe Campus, Istanbul, 34722, Turkey
Abstract
Productions, mechanical and microstructural analyses of bioglass/sheep hydroxyapatite (SHA) composites are introduced. Bioglass were added to calcinated SHA with various concentrations 5 and 10 wt. %. Powder mixture compacted with pressure (350 MPa) in steel moulds to obtain cylinder samples. As the next step, samples sintered in air at various temperatures (1000, 1100, 1200, 1300 o C for 4 hrs). Compression strength test, density and the Vickers microhardness (HV) measurements were carried out and microstructural characterizations were performed by scanning electron microscopy (SEM) and X-ray diffraction analysis (XRD) in order to determine optimum sintering temperature and mechanical properties. At last average hardness value 1612 ± 80 HV, average density of 2.65 ± 0.31 g/cm3 , and compressive strength value of σavr = 99.14 MPa were obtained by sintering at 1300 o C with the addition of 5 wt. % bioglass in SHA. Results show potential of brittle biomaterial but resistant to plastic strain.

Keywords: Composites, Sheep bone, Hydroxyapatite (HA), Bioglass, Bioceramic

This Article

  • 2017; 18(1): 64-68

    Published on Jan 31, 2017

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