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      https://www.ias.ac.in/article/fulltext/boms/039/03/0729-0735

    • Keywords

       

      Na$^{+}$-$\beta/beta"$-alumina; solid electrolyte; calcium impurity; specific resistance.

    • Abstract

       

      Ca-doped Na$^{+}$-$\beta/beta"$-alumina was synthesized using a solid-state reaction. The changes in the properties of Na$^{+}$-$\beta/beta"$-alumina resulting from the presence of Ca impurity were studied. Ca (0–5 wt%) was added to the respective samples, which were then sintered. The specimens were characterized using X-ray diffraction, scanningelectron microscopy, densimetry and impedance analysis. In the sintered specimens, the $\beta"$-alumina phase fraction decreased as Ca content increased, whereas the relative sintered density increased. The surface morphology of Cadoped Na$^{+}$-$\beta/beta"$-alumina specimens showed a Ca-rich layer, which was the main cause of increase in the specificresistance.

    • Author Affiliations

       

      SUNG-TAE LEE1 DAE-HAN LEE1 SANG-MIN LEE1 SANG-SOO HAN1 SANG-HYUNG LEE1 SUNG-KI LIM1

      1. Department of Materials Chemistry and Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 143-701, South Korea
    • Dates

       
  • Bulletin of Materials Science | News

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