Synthesis and electrical property measurements of Ba β-alumina in a BaO-MgO-Al2O3 system

Gang He, Takayuki Narushima, Takashi Goto, Toshio Hirai, Yasutaka Iguchi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

An ionic conductor, Ba β-alumina, was synthesized in a BaO-MgO-Al2O3 ternary system by solid state sintering at 2023 to 2073 K. The Ba β-alumina with a composition of BaO : MgO : Al2O3=1 : 1 : 5 was in a single phase. Its relative density was 96% of the theoretical density. The electrical conductivity of Ba β-alumina was 4.6 × 10-3 S·m-1 at 1673 K and the activation energy was 126.82 kJ·mol-1. The mobile ion could be Ba2+, and its ionic transport number was about 0.8 to 0.9 at 1073 to 1673 K.

Original languageEnglish
Pages (from-to)1048-1050
Number of pages3
JournalJournal of the Ceramic Society of Japan
Volume106
Issue number11
Publication statusPublished - 1998 Nov

Keywords

  • Aluminate
  • Ionic conductor
  • Ionic transport number
  • Mobile ion
  • Solid electrolyte
  • Solid state sintering
  • a.c. impedance
  • β-alumina

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Synthesis and electrical property measurements of Ba β-alumina in a BaO-MgO-Al<sub>2</sub>O<sub>3</sub> system'. Together they form a unique fingerprint.

  • Cite this