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Compressive Creep of CoO Single Crystals
Author(s) -
NEHRING V. W.,
SMYTH J. R.,
McGEE THOMAS D.
Publication year - 1977
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.1151-2916.1977.tb15553.x
Subject(s) - creep , materials science , inflection point , activation energy , dislocation , exponent , diffusion , steady state (chemistry) , dislocation creep , composite material , single crystal , compressive strength , stress (linguistics) , thermodynamics , crystallography , chemistry , physics , geometry , mathematics , linguistics , philosophy
Uniaxial compressive creep of single‐crystal CoO was investigated at 1000° to 1290°C and stresses of 1200 to 2100 psi. The activation energy for creep at inflection and steady state was ≅50 kcal/mol. The stress exponent was ≅5 at both inflection and steady state. The results are explained in terms of diffusion‐controlled dislocation motion.