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Title: | Influence of the MgO-TiO<inf>2</inf>co-additive content on the phase formation, microstructure and fracture toughness of MgO-TiO<inf>2</inf>-reinforced dental porcelain nanocomposites |
Authors: | Ranida Waiwong Supon Ananta Attavit Pisitanusorn |
Authors: | Ranida Waiwong Supon Ananta Attavit Pisitanusorn |
Keywords: | Materials Science |
Issue Date: | 1-Mar-2017 |
Abstract: | The influence of the co-additive concentration (0 - 45 wt% with an interval of 5 wt%) of MgO-TiO2on the phase formation, microstructure and fracture toughness of MgO-TiO2-reinforced dental porcelain nanocomposites derived from a one-step sintering technique were examined using a combination of X-ray diffraction, scanning electron microscopy and Vickers indentation. It was found that MgO-TiO2-reinforced dental porcelain nanocomposites exhibited significantly higher fracture toughness values than those observed in single-additive (MgO-TiO2)-reinforced dental porcelain composites at any given sintering temperature. The amount of MgO-TiO2as a co-additive was found to be one of the key factors controlling the phase formation, microstructure and fracture toughness of these nanocomposites. It is likely that 30 wt% of MgO-TiO2as a co-additive is the optimal amount for MgO-TiO25 and MgO-TiO24 crystalline phase formation to obtain the maximum relative density (96.80%) and fracture toughness (2.60 ± 0.07 MPa·m1/2) at a sintering temperature of 1000°C. |
URI: | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85029790806&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/57484 |
ISSN: | 12297801 |
Appears in Collections: | CMUL: Journal Articles |
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