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Mechanism of dendritic side‐branches coarsening under isothermal conditions
Author(s) -
Fedorov O. P.,
Ovsienko D. E.
Publication year - 1988
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170230406
Subject(s) - succinonitrile , isothermal process , dendrite (mathematics) , materials science , crystallization , phase diagram , dissolution , phase (matter) , thermodynamics , crystallography , morphology (biology) , chemical physics , chemistry , geometry , organic chemistry , physics , mathematics , electrode , electrolyte , genetics , biology
The process of dendritic branches transformation of succinonitrile and some other organic substances has been studied under the isothermal holding of two‐component melt. The dendritic branches have been shown to be separated from the steam in the specimen with the thickness comparable with the diameter of the dendrite. Dendritic structure coarsening observed in the bulk specimen is not associated with the separation of the branches. In the region of the concentration gradient the dendritic growth has been shown to result in partial dissolution of as‐crystallized material under the isothermal holding after the end of crystallization. This effect seems to result from the diffusionless growth in the two‐phase region of the phase diagram.