The effect of titania content on the densification, the phase transformation, the microstructures, and mechanical properties of 50 wt% Al2O3-50 wt% ZrO2 (12 mol% CeO2) was evaluated. Ceramic composites with different TiO2 content (0.27, 5, 10 wt%) were prepared by pressureless sintering at low temperature (1400°C) for 2 hours in air. Dense ceramic was obtained by adding 5 wt% of TiO2 loading to improved mechanical properties. The microstructure analysis provided lots of information about solid-state reactivity in alumina-zirconia-titania ternary system. The content of TiO2 strongly affected the phases evolution and the grain growth during sintering. Furthermore, a significant effect on mechanical properties and fracture behavior was also observed. © 2018 The American Ceramic Society
Properties and microstructural aspects of TiO2-doped sintered Alumina-Zirconia composite ceramics
Khaskhoussi, Amani
;Calabrese, LuigiConceptualization
;Proverbio, EdoardoSupervision
;
2018-01-01
Abstract
The effect of titania content on the densification, the phase transformation, the microstructures, and mechanical properties of 50 wt% Al2O3-50 wt% ZrO2 (12 mol% CeO2) was evaluated. Ceramic composites with different TiO2 content (0.27, 5, 10 wt%) were prepared by pressureless sintering at low temperature (1400°C) for 2 hours in air. Dense ceramic was obtained by adding 5 wt% of TiO2 loading to improved mechanical properties. The microstructure analysis provided lots of information about solid-state reactivity in alumina-zirconia-titania ternary system. The content of TiO2 strongly affected the phases evolution and the grain growth during sintering. Furthermore, a significant effect on mechanical properties and fracture behavior was also observed. © 2018 The American Ceramic SocietyPubblicazioni consigliate
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