Article ID Journal Published Year Pages File Type
5438392 Ceramics International 2017 17 Pages PDF
Abstract
Si3N4 based composites were successfully sintered by spark plasma sintering using low cost BaCO3, SiO2 and Al2O3 as additives. Powder mixtures were sintered at 1600-1800 °C for 5 and 10 min. Displacement-temperature-time (DTT) diagrams were used to evaluate the sintering behavior. Shrinkage curve revealed that densification was performed between 1100 and 1700 °C. The specimen sintered at 1700 °C showed the maximum relative density (99.8±0.1%), flexural strength (352±16 MPa), Vickers harness (11±0.1 GPa) and toughness (5.6±0.05 MPa m1/2).
Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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