IMPURE ZIRCONIA ELECTRICAL-CONDUCTIVITY ENHANCEMENT BY RARE-EARTH MINORITY IONS IN THE Y2O3 RE(2)O(3) ZRO2 SYSTEM

Authors
DESOUZA DPF CHINELATTO AL DESOUZA MF
Citation
Dpf. Desouza et al., IMPURE ZIRCONIA ELECTRICAL-CONDUCTIVITY ENHANCEMENT BY RARE-EARTH MINORITY IONS IN THE Y2O3 RE(2)O(3) ZRO2 SYSTEM, Journal of Materials Science, 30(17), 1995, pp. 4355-4362
Citations number
45
Categorie Soggetti
Material Science
Journal title
Journal of Materials Science → ACNP
ISSN journal
00222461
Volume
30
Issue
17
Year of publication
1995
Pages
4355 - 4362
Database
ISI
SICI code
0022-2461(1995)30:17<4355:IZEEBR>2.0.ZU;2-7
Abstract
Impure zirconia stabilized by 12 wt% yttria concentrate (85 wt% Y2O3+1 5 wt% rare-earth (RE)) was found to have high grain and grain-boundary electrical conductivities. The influence of the RE on the segregation of impurities was studied for four different compositions. Microstruc ture features are evidence for the enhanced segregation of impurities due to RE ions. The increased grain and grain-boundary conductivities are a consequence of the segregation of impurities.