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- W2039336155 abstract "Fine-grained (< 5μm), dense (3.26–3.27 g/cm3), and strong (> 200 MN/m2) polycrystalline β″-alumina (lithia-stabilized) ceramics can be fabricated by vacuum hot-pressing at temperatures ≥ 1330°C and pressures between 28 and 41 MN/m2. By suitable low temperature annealing (< 1400°C), a fine-grained, high strength β″ alumina body can be fabricated with a low resistance (< 5 ohm-cm at 300°C) to sodium ion conduction. The relatively high sodium ion resistivities (6–11 ohm-cm) obtained directly after hot-pressing are caused by an incomplete phase conversion to β″-alumina during densification and not to a small grain size. Low temperature annealing can promote phase conversion and yet prevent any significant grain growth. The high strength ceramics produced by hot-pressing can serve as the standard to be achieved in conventional sintering." @default.
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- W2039336155 date "1979-04-01" @default.
- W2039336155 modified "2023-10-18" @default.
- W2039336155 title "Hot pressing of lithia-stabilized β″-alumina" @default.
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- W2039336155 doi "https://doi.org/10.1016/0390-5519(79)90031-0" @default.
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