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Single‐Crystal Elastic Constants of Yttria‐Stabilized Zirconia in the Range 20° to 700°C
Author(s) -
KANDIL H. M.,
GREINER J. D.,
SMITH J. F.
Publication year - 1984
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.1151-2916.1984.tb19534.x
Subject(s) - fluorite , cubic zirconia , atmospheric temperature range , yttria stabilized zirconia , materials science , single crystal , crystal (programming language) , phase (matter) , analytical chemistry (journal) , thermodynamics , crystallography , mineralogy , chemistry , ceramic , composite material , metallurgy , physics , organic chemistry , chromatography , computer science , programming language
Elastic constants of single crystals of yttria‐stabilized zirconia were determined through the temperature range 20° to 700°C. Crystals containing 8.1, 11.1,12.1, 15.5, and 17.9 mol% Y 2 0 3 were measured. The elastic constant C 11 was found to decrease and C 12 and C 44 to increase with increasing Y 2 O 3 content; this appears to be due to decreasing coulombic interaction as Y 3+ replaces Zr 4+ . Except for the 8.1 mol% Y 2 O 3 crystal, the conventional elastic constants all showed normal monotonic decreases with increasing temperature. In the case of the 8.1 mol% Y 2 O 3 crystal, measurements as a function of temperature were not reproducible, and it is likely that this composition at room temperature is below the composition limit of thermodynamic stability of the cubic fluorite phase.