SYNTHESIS AND ELECTRICAL PROPERTY MEASUREMENTS OF BA BETA-ALUMINA IN A BAO-MGO-AL2O3 SYSTEM

Authors
HE G NARUSHIMA T GOTO T HIRAI T IGUCHI Y
Citation
G. He et al., SYNTHESIS AND ELECTRICAL PROPERTY MEASUREMENTS OF BA BETA-ALUMINA IN A BAO-MGO-AL2O3 SYSTEM, Nippon Seramikkusu Kyokai gakujutsu ronbunshi, 106(11), 1998, pp. 1048-1050
Citations number
14
Categorie Soggetti
Material Science, Ceramics
Journal title
Nippon Seramikkusu Kyokai gakujutsu ronbunshi → ACNP
ISSN journal
09145400
Volume
106
Issue
11
Year of publication
1998
Pages
1048 - 1050
Database
ISI
SICI code
0914-5400(1998)106:11<1048:SAEPMO>2.0.ZU;2-6
Abstract
An ionic conductor, Ba beta-alumina, was synthesized in a BaO-MgO-Al2O 3, ternary system by solid state sintering at 2023 to 2073 K. The Ba b eta-alumina with a composition of BaO :MgO :Al2O3=1 : 1 : 5 was in a s ingle phase. Its relative density was 96% of the theoretical density. The electrical conductivity of Ba beta-alumina was 4.6 x 10(-3) S.m(-1 ) at 1673 K and the activation energy was 126.82 kJ.mol(-1). The mobil e ion could be Ba2+ and its ionic transport number was about 0.8 to 0. 9 at 1073 to 1673 K.