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Elastic Properties of Stabilized HfO 2 Compositions
Author(s) -
DOLE S. L.,
HUNTER O.,
CALDERWOOD F. W.
Publication year - 1980
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.1151-2916.1980.tb10677.x
Subject(s) - porosity , thermal expansion , materials science , elastic modulus , composite material , modulus , bulk modulus , thermal , oxygen , thermodynamics , chemistry , physics , organic chemistry
Elastic moduli of several stabilized HfO 2 compositions were studied as functions of porosity and temperature. Thermal expansion was also measured for one of the compositions. The modulus vs porosity and thermal‐expansion measurements yielded typical relations. The modulus vs temperature measurements revealed an anomalous nonlinear relation between room temperature and 500°C. Varying microstructural and testing conditions had no effect on the nonlinearity. Only the percent of stabilizer additive caused any change in this behavior. It is proposed that oxygen‐vacancy motion is the probable cause of this behavior.