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Phase Equilibria and Ordering in the System Zirconia‐Hafnia‐Yttria
Author(s) -
TRUBELJA MLADEN F.,
STUBICAN VLADIMIR S.
Publication year - 1988
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.1151-2916.1988.tb06385.x
Subject(s) - hafnia , yttria stabilized zirconia , cubic zirconia , solid solution , materials science , phase (matter) , fluorite , ternary numeral system , lattice constant , ternary operation , lattice (music) , mineralogy , analytical chemistry (journal) , chemistry , metallurgy , ceramic , diffraction , optics , physics , computer science , chromatography , organic chemistry , programming language , acoustics
The phase equilibria in the system zirconia‐hafnia‐yttria were investigated at 1300° and 1600°C by precise lattice parameter measurements and the direct phase‐inspection method. Large fluorite solid solution regions were dominant at both investigated temperatures. The extent of ordering within the ternary system was studied in the samples containing 40 mol% yttria at 1300°C. The δ‐phase (Zr,Hf) 3 Y 4 O 12 formation was established only in those samples with less than 15 mol% hafnia.