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Creep Behavior of a Model Refractory System MgO‐CaMgSiO 4
Author(s) -
SNOWDEN WILLIAM E.,
PASK JOSEPH A.
Publication year - 1978
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.1151-2916.1978.tb09286.x
Subject(s) - creep , materials science , refractory (planetary science) , silicate , deformation (meteorology) , diffusion creep , dislocation , stress (linguistics) , deformation mechanism , phase (matter) , metallurgy , composite material , boundary (topology) , thermodynamics , mineralogy , grain boundary , geology , microstructure , chemical engineering , chemistry , physics , linguistics , philosophy , organic chemistry , engineering , mathematical analysis , mathematics
The effects of the presence of a silicate boundary phase on the high‐temperature creep behavior of a model refractory system MgO‐CaMgSiO 4 (monticellite, CMS) were studied at 1200° to 1450°C. A change in the dominant mechanism of deformation was determined with increasing temperature and decreasing applied stress. It was concluded that, at 1200°C, deformation is controlled by a dislocation mechanism in the MgO framework, whereas at higher temperatures creep is the result of simultaneous mechanisms but dominated by viscous deformation of the silicate boundary region.