Synthesis and Properties of Strontium b-Alumina

It has been shown that strontium b-alumina is a stable phase at compositions close to SrAl sub(10)O sub(17) and can be further stabilized over a composition range in the presence of MgO in the SrO-MgO-Al sub(2)O sub(3) system. In the absence of MgO, at temperatures greater than 1673 K, the magnetopl...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the American Ceramic Society 2006-04, Vol.89 (4), p.1388-1394
Main Authors: Swetnam, MA, Fray, D J, Kumar, R V
Format: Article
Language:English
Subjects:
Activation energy
Ceramics
Magnesium oxide
Strontium
Synthesis
Tables
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:It has been shown that strontium b-alumina is a stable phase at compositions close to SrAl sub(10)O sub(17) and can be further stabilized over a composition range in the presence of MgO in the SrO-MgO-Al sub(2)O sub(3) system. In the absence of MgO, at temperatures greater than 1673 K, the magnetoplumbite phase is readily formed. Conductivity measurement carried out at temperatures from 1073 to 1773 K has demonstrated that both the strontium b-alumina and the magnetoplumbite phases have reasonably similar magnitudes of conductivity and activation energy.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2005.00852.x