Improvement of thermal stability of Yttria-doped tetragonal zirconia polycrystals by alloying with various oxides
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Cited by (42)
Advanced Dental Ceramics
2021, Encyclopedia of Materials: CompositesA review on the hydrothermal ageing behaviour of Y-TZP ceramics
2018, Ceramics InternationalCitation Excerpt :When the TiO2 content was increased to 7.7 mol%, the amount of monoclinic phase reached 80% after ageing for 120 h [133,134]. Sato et al. [125] found that ageing-induced t to m phase transformation (in air at 200 °C for 50 h) could be suppressed with the addition of higher TiO2 content of 10 mol%. Miyazaki [135] doped higher concentration of TiO2, up to 20 mol%, in zirconia and found that the addition of 8 mol% TiO2 could improve the thermal stability of zirconia matrix with no significant cracks or volume change during heating and cooling of the samples.
Effect of calcia co-doping on ceria-stabilized zirconia
2018, Journal of the European Ceramic SocietyCitation Excerpt :In ceria-doped zirconia, partial substitution of ceria by yttria also resulted in a reduced grain size and in a more stabilized tetragonal structure, which increased the hardness but decreased the fracture toughness [17–21]. As Y2O3 is more effective than CeO2 regarding grain size refinement and tetragonal stability, co-doping zirconia with proper proportions of ceria and yttria results in a reduced grain size with respect to a Ce-TZP and a better LTD resistance than Y-TZP ceramics [7,16–18]. Grain growth in zirconia is strongly related to the composition and phase content, as observed in zirconia doped with Y2O3, where the grain growth of cubic grains can be two orders of magnitude faster than that of tetragonal grains alloyed with the same cation, but it can be strongly suppressed if both phases coexist [22].
Effects of cerium addition on the microstructure, mechanical properties and thermal conductivity of YSZ fibers
2018, Ceramics InternationalCitation Excerpt :In order to enhance the strength of CSZ and to improve the thermal stability of YSZ, applying a mixture of ceria-yttria stabilizers may be an effective solution to combine the excellent properties of the two stabilizers. Sato et al. [15] first reported the availability of CeO2-Y2O3-ZrO2 (CYSZ) ceramics and demonstrated that added CeO2 caused no significant degradation in sinterability and enhanced the mechanical properties in this system, and the stability of the tetragonal phase in CeO2-Y2O3-ZrO2 ceramics increased with increasing amounts of Y2O3 and CeO2. Duh et al. [13] also showed that partial substitution by Y2O3 in CeO2-ZrO2 resulted in a decrease in grain size, and the partial substitution tended to stabilize the tetragonal structure.
Synthesis and microstructure of Y<inf>2</inf>O<inf>3</inf>-doped ZrO<inf>2</inf>-CeO<inf>2</inf> composite nanoparticles by hydrothermal process
2008, Colloids and Surfaces A: Physicochemical and Engineering Aspects