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Phase Equilibria and Ionic Conductivity in the System ZrO 2 −Yb 2 O 3 −Y 2 O 3
Author(s) -
CORMAN G. S.,
STUBICAN V. S.
Publication year - 1985
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1985.tb15293.x
Subject(s) - ionic conductivity , ternary operation , phase (matter) , materials science , ternary numeral system , dopant , ionic bonding , analytical chemistry (journal) , fluorite , conductivity , cubic zirconia , crystallography , mineralogy , doping , ion , chemistry , ceramic , metallurgy , optoelectronics , organic chemistry , electrode , chromatography , computer science , electrolyte , programming language
The phase equilibria in the zirconia‐rich part of the system ZrO 2 −Yb 2 O 3 −Y 2 O 3 were determined at 1200°, 1400°, and 1650°C. The stabilizing effects of Yb 2 O 3 and Y 2 O 3 were found to be quite similar with <10 mol% of either being necessary to fully stabilize the cubic fluorite‐structure phase at 1200°C. The two binary ordered phases, Zr 3 Yb 4 O 12 and Zr 3 Y 4 O 12 , are completely miscible at 1200°C. These were the only binary or ternary phases detected. The ionic conductivities of ternary specimens in this system were measured using the complex impedance analysis technique. For a given level of total dopant, the substitution of Yb 2 O 3 for Y 2 O 3 gives only minor increases in specimen conductivity.