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Formation and Transformation of Cubic ZrO 2 Solid Solutions in the System ZrO 2 —Al 2 O 3
Author(s) -
Yamaguchi Osamu,
Shirai Masakazu,
Yoshinaka Masaru
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.tb05821.x
Subject(s) - tetragonal crystal system , solid solution , zirconium , amorphous solid , materials science , crystallography , lattice (music) , lattice constant , analytical chemistry (journal) , mineralogy , crystal structure , chemistry , metallurgy , diffraction , organic chemistry , physics , acoustics , optics
In the system ZrO 2 ‐Al 2 O 3 , cubic ZrO 2 solid solutions containing up to 40 mol% Al 2 O 3 crystallize at low temperatures from amorphous materials prepared by the simultaneous hydrolysis of zirconium and aluminum alkoxides. The values of the lattice parameter, a, increase linearly from 0.5095 to 0.5129 nm with increasing Al 2 O 3 content. At higher temperatures, the solid solutions transform into tetragonal ZrO 2 and α‐Al 2 O 3 . Pure ZrO 2 crystallizes in the tetragonal form at 415° to 440°C.