Microstructures of binary organic eutectics

Microstructures of benzoic acid-benzamide, benzoic acid-diphenylamine, α-naphthylamine-diphenylamine, p-nitrophenol-trichloroacetic acid and resorcinol-catechol systems which form a faceted-faceted (f/f) class of the eutectics, have been investigated. Eutectics and their constituent materials, grown...

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Bibliographic Details
Published inJournal of crystal growth Vol. 67; no. 3; pp. 633 - 638
Main Authors Sharma, B.L., Sharma, N.K., Bassi, P.S.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.08.1984
Elsevier
Subjects
Cross-disciplinary physics: materials science; rheology
Exact sciences and technology
Materials science
Methods of crystal growth; physics of crystal growth
Physics
Theory and models of crystal growth; physics of crystal growth, crystal morphology and orientation
Polarizing microscope
Nitro compound
Facetting
Crystallization
Oriented solidification
Experimental study
Optical microscopy
Carboxylic acid
Eutectic
Bicyclic compound
Carboxamide
Benzenic compound
Microstructure
Secondary amine
Monocyclic compound
Organic compounds
Microphotography
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Summary:Microstructures of benzoic acid-benzamide, benzoic acid-diphenylamine, α-naphthylamine-diphenylamine, p-nitrophenol-trichloroacetic acid and resorcinol-catechol systems which form a faceted-faceted (f/f) class of the eutectics, have been investigated. Eutectics and their constituent materials, grown unidirectionally and randomly show quite distinct crystallographic morphologies. The growth front for all the systems is molecularly smooth showing that the growth occured in steps. The eutectics have quasi-regular structures at moderate growth rates whereas these structures are anomalous at very slow and fast growth rates. The mechanism of the formation of microstructures has been discussed.
ISSN:0022-0248
1873-5002
DOI:10.1016/0022-0248(84)90059-9