Ion Transport in Ca(2+), Sr(2+), Ba(2+), and Pb(2+), Beta' Aluminas.
Abstract
Single crystals of Ca(2+), Sr(2+), Ba(2+), and Pb(2+) beta alumina were prepared from sodium beta alumina by ion exchange. The ionic conductivities of Ca2+, Sr2+, and Ba2+ beta alumina are comparable, about 2-4x10-2 (ohm-cm)-1 at 300 degrees C. Surprisingly, Pb(2+) beta alumina is much more conductive, 1.5x10-1 (ohm-cm)-1 at 300 degree C and 4.6x10-3 (ohm-cm)-1 at 40 degrees C. Its conductivity approaches that of sodium beta alumina at temperatures below 25 degrees C. The diffusion coefficient for Sr(2+) in beta alumina at 600 degrees C was estimated from radiotracer experiments. It is consistent with that expected from conductivity measurements.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 07, 1983
- Accession Number
- ADA125691
Entities
People
- B. Dunn
- G. C. Farrington
- J. Denuzzio
- R. Seevers
Organizations
- Pennsylvania State University