Electrical conductivity of alkaline-earth metal beta-aluminas and their application to a CO2 gas sensor

Authors
He, G Goto, T Narushima, T Iguchi, Y
Citation
G. He et al., Electrical conductivity of alkaline-earth metal beta-aluminas and their application to a CO2 gas sensor, SOL ST ION, 121(1-4), 1999, pp. 313-319
Citations number
19
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE IONICS
ISSN journal
01672738 → ACNP
Volume
121
Issue
1-4
Year of publication
1999
Pages
313 - 319
Database
ISI
SICI code
0167-2738(199906)121:1-4<313:ECOAMB>2.0.ZU;2-I
Abstract
Sr and Ba beta-aluminas in a single phase were synthesized in the MO-MgO-Al 2O3 (M = Sr and Ba) system by a solid state sintering method. The electrica l conductivity was measured at 873 to 1473 K by an AC impedance method. The total electrical conductivities of Sr beta-alumina and Ba beta-alumina wer e 1.2 x 10(-2) S m(-1) and 6.7 x 10(-4) S m(-1) at 1473 K, respectively. A CO2 gas sensor using the srp-alumina was constructed. The sensor could be u sed at more than 1000 K. (C) 1999 Elsevier Science B.V. All rights reserved .