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Structural Characterization of High‐Temperature Zirconia Ceramics by Perturbed Angular Correlation Spectroscopy
Author(s) -
JAEGER HERBERT,
GARDNER JOHN A.,
HAYGARTH JOHN C.,
RASERA ROBERT L.
Publication year - 1986
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.1151-2916.1986.tb07445.x
Subject(s) - tetragonal crystal system , cubic zirconia , yttria stabilized zirconia , materials science , monoclinic crystal system , phase (matter) , alloy , ceramic , analytical chemistry (journal) , crystallography , crystal structure , chemistry , metallurgy , organic chemistry , chromatography
Perturbed angular correlation spectra of γ‐rays emitted following the decay of dilute 181 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 1470°C. 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 give a cubic/(cubic + tetragonal) phase boundary that is somewhat lower in temperature than indicated by current phase diagrams.