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‘Polymorph Method’ Determination of Monoclinic Zirconia in Partially Stabilized Zirconia Ceramics
Author(s) -
Howard Christopher J.,
Kisi Erich H.
Publication year - 1990
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.1151-2916.1990.tb06725.x
Subject(s) - monoclinic crystal system , cubic zirconia , orthorhombic crystal system , tetragonal crystal system , materials science , phase (matter) , crystallography , diffraction , ceramic , powder diffraction , mineralogy , analytical chemistry (journal) , crystal structure , chemistry , chromatography , metallurgy , organic chemistry , optics , physics
The polymorph method, which provides phase analysis from a small number of integrated intensities in a powder diffraction scan, is adapted for the determination of monoclinic zirconia in a mixture with cubic, tetragonal. and orthorhombic zirconias and the γ‐phase (Mg 2 Zr 5 O 12 ). Such a mixture is representative of Mg‐PSZ after subeutectoid aging. The quantitative determination of the monoclinic depends in principle on a knowledge of the relative amounts of the other phases present in the mixture. It is demonstrated, however, that without this knowledge, even in complex mixtures, the traditional polymorph method analysis gives an acceptable estimate of the monoclinic fraction in the sample.