Phase equilibria and ordering in the system zirconia-hafnia-yttria

Journal Article · Mon Aug 01 00:00:00 EDT 1988 · J. Am. Ceram. Soc.; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1988.tb06385.x· OSTI ID:6300604

Trubelja, M F

The phase equilibria in the system zirconia-hafnia-yttria were investigated at 1300/sup 0/ and 1600/sup 0/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/sup 0/C. The delta-phase (ZrHf)/sub 3/Y/sub 4/O/sub 12/ formation was established only in those samples with less than 15 mol% hafnia.

• Research Organization: Omega Engineering Inc., Stamford, CT (US)
• OSTI ID: 6300604
• Journal Information: J. Am. Ceram. Soc.; (United States), Journal Name: J. Am. Ceram. Soc.; (United States) Vol. 71:8; ISSN JACTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALLOY SYSTEMS
CHALCOGENIDES
HAFNIUM COMPOUNDS
HAFNIUM OXIDES
LATTICE PARAMETERS
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
REFRACTORY METAL COMPOUNDS
TERNARY ALLOY SYSTEMS
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES