Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5440766 | Journal of the European Ceramic Society | 2017 | 10 Pages |
Abstract
Commercial Bioglass® 45S5 powder was sintered using spark plasma sintering (SPS) technique without the assistance of mechanical pressure with heating and cooling rate of 100 °C/min, dwell temperature of 1050 °C and dwell time of 30 min. Such route enabled the production of samples exhibiting superior mechanical properties in comparison with Bioglass® sintered in furnace. In particular, flexural strength and fracture toughness reached values close to those of apatite-wollastonite bioceramics, already widely used in clinical applications. The residual stresses implemented by indentation promoted the formation of a new phase in samples sintered by SPS. Complementary use of Raman and energy dispersive spectroscopy (EDS) indicated the phase as sodium carbide and a formation mechanism was proposed.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Luca Bertolla, Ivo Dlouhý, Peter Tatarko, Alberto Viani, Amit Mahajan, ZdenÄk Chlup, Michael J. Reece, Aldo R. Boccaccini,