Structural characterization of high temperature zirconia ceramics by perturbed angular correlation spectroscopy. Progress report

Technical Report · Sun Jan 01 04:00:00 EST 1984

OSTI ID:6305436

Jaeger, H; Gardner, J A; Haygarth, J C; Rasera, R L

Perturbed angular correlation (PAC) spectra of gamma rays emitted following the decay of dilute Y Hf in several zirconia ceramics are reported. Spectra for monoclinic and tetragonal zirconia, a tetragonal zirconia/yttria alloy, a cubic zirconia/yttria alloy, and two mixed tetragonal/cubic phase zirconia/yttria alloys were measured as a function of temperature to 1470C. The spectrum observed for each phase has a unique signature, and the spectrum of mixed-phase materials can be used to determine the relative amounts of the different phases. These data show that the cubic phase is stabilized to a lower temperature than indicated by published phase diagrams, and a new cubic/cubic + tetragonal phase boundary is derived.

• Research Organization: Oregon State Univ., Corvallis (USA). Dept. of Physics; Teledyne-Wah Chang, Albany, OR (USA); Maryland Univ., Catonsville (USA). Dept. of Physics
• DOE Contract Number: FG06-85ER45191
• OSTI ID: 6305436
• Report Number(s): DOE/ER/45191-1; ON: DE86006348
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ANGULAR CORRELATION
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHALCOGENIDES
CORRELATIONS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
DAYS LIVING RADIOISOTOPES
ELECTROMAGNETIC RADIATION
EVEN-ODD NUCLEI
GAMMA RADIATION
HAFNIUM 181
HAFNIUM ISOTOPES
HEAVY NUCLEI
IONIZING RADIATIONS
ISOTOPES
NUCLEI
OXIDES
OXYGEN COMPOUNDS
PERTURBED ANGULAR CORRELATION
PHASE STUDIES
RADIATIONS
RADIOISOTOPES
SPECTRA
TETRAGONAL LATTICES
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES