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Kinetics and Burst Phenomenon in ZrO 2 Transformation
Author(s) -
MAITI H. S.,
GOKHALE K. V. G. K.,
SUBBARAO E. C.
Publication year - 1972
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.1151-2916.1972.tb11294.x
Subject(s) - crystallite , tetragonal crystal system , materials science , kinetics , isothermal process , monoclinic crystal system , transformation (genetics) , thermodynamics , crystallography , mineralogy , chemistry , metallurgy , crystal structure , physics , biochemistry , quantum mechanics , gene
The monoclinic‐tetragonal transformation in ZrO 2 was studied by DTA. The reverse transformation occurs at 850° to 1000°C, depending on the crystallite size, which is a function of the experimental variables. Isothermal kinetics are exhibited by material containing small crystallites; athermal behavior begins to appear as the crystallite size increases. On cooling, strain‐free samples undergo a very rapid transformation which is evident as a burst.