Investigation of the Production of β-Al₂O₃ Solid Electrolyte from Seydişehir α-Al₂O₃

Year 2017, Volume: 21 Issue: 3, 816 - 819, 24.10.2017

Zeynep Taşlıçukur Öztürk , Selin Engürlü Nilgun Kuşkonmaz

https://doi.org/10.19113/sdufbed.31721

Cited By: 2

Abstract

In this study, we report the production of β˝-Al₂O₃ solid electrolyte by using Seydişehir α-Al₂O₃. Alumina has to be low grain-sized to ensure α-β phase transformation. Therefore, grain refining process was applied to high grain sized Seydişehir alumina by jetmill grinding. Seydişehir alumina was calcined at 1200 ⁰C for 2 hours. After calcination, calcined Al₂O₃ and Na₂CO₃ were mixed during 2 hours in the mill. The samples were pressed and sintered to obtain β˝-Al₂O₃. β˝-Al₂O₃ was obtained after sintering at 1550°C for 1 hour. Due to the formation of β˝-Al₂O₃, it is observed that dielectric properties increased.

Keywords

α-Al2O3, Calcination; Sintering; β-Al2O3; Dielectric properties

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