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- W2291073405 abstract "Abstract Doping a small amount of TiO 2 can promote the relative density, increase the content of β″-Al 2 O 3 phase and improve the microstructure of β″-Al 2 O 3 electrolyte. In this work, the influence of microstructure, relative density, content of β″ phase and performance of β″-Al 2 O 3 electrolyte were studied by adjusting the doping amount of TiO 2 and the sintering temperature. Samples were characterized with respect of density, closed-cell porosity, XRD, SEM, bending strength, AC Impedance Spectroscopy. The results demonstrated that the addition of TiO 2 can significantly improve the densification rate of β″-Al 2 O 3 ceramics. 1500–1550 °C is the key temperature section of eliminating pore process. At 1550 °C, the sample of 0.1–0.8 wt.% TiO 2 formed homogeneous microstructure associated with a refinement in the grain size of the final compact. Macro defects appeared when the sintering temperature reached to 1580 °C or the content of TiO 2 was 1.6–2.0 wt.%. The total conductivity linearly depended on the temperature and fitted well with the Arrhenius equation. β″-Al 2 O 3 ceramics showed the best bending strength and ionic conductivity at 1550 °C when the doping amount of TiO 2 is 0.4 wt.% and 0.8 wt.%, respectively." @default.
- W2291073405 created "2016-06-24" @default.
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- W2291073405 date "2016-07-01" @default.
- W2291073405 modified "2023-10-16" @default.
- W2291073405 title "Microstructure control and properties of β″-Al2O3 solid electrolyte" @default.
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- W2291073405 doi "https://doi.org/10.1016/j.jallcom.2016.03.009" @default.
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