IONIC-CONDUCTIVITY OF FULLY STABILIZED ZRO2-MGO AND BLOCKING EFFECTS

Authors
MUCCILLO ENS KLEITZ M
Citation
Ens. Muccillo et M. Kleitz, IONIC-CONDUCTIVITY OF FULLY STABILIZED ZRO2-MGO AND BLOCKING EFFECTS, Journal of the European Ceramic Society, 15(1), 1995, pp. 51-55
Citations number
20
Categorie Soggetti
Material Science, Ceramics
Journal title
Journal of the European Ceramic Society → ACNP
ISSN journal
09552219
Volume
15
Issue
1
Year of publication
1995
Pages
51 - 55
Database
ISI
SICI code
0955-2219(1995)15:1<51:IOFSZA>2.0.ZU;2-Z
Abstract
Ionic conductivity measurements were performed by impedance spectrosco py on ZrO2-MgO 13.7 mol%, in the 270-700 degrees C temperature range. The diagrams show characteristic intragrain and gr ain boundary semici rcles. Activation energies for the intragrain conductivity and the int ergrain blocking effect are 126 and 141 kJ mol(-1), respectively. The estimated specific conductivity is 9.8 S m(-1) at 1000 degrees C. The conductivity blocking effect at the grain boundaries is very similar t o that of yttria-stabilized zirconia.