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SECONDARY GRAIN-GROWTH IN AMMONIUM-NITRATE CRYSTALLIZATION

DSpace at IIT Bombay

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Field Value
 
Title SECONDARY GRAIN-GROWTH IN AMMONIUM-NITRATE CRYSTALLIZATION
 
Creator RAO, KVR
HARIHARAN, PL
CHAKRABARTY, DK
 
Subject dendritic growth
 
Description Crystallization and ageing of pure ammonium nitrate crystals was studied by scanning electron microscopy. Ageing the crystals beyond 1 h led to the growth of secondary grains along the grain boundaries of primary grains (140-200-mu-m). After 6 h ageing secondary growth along grain boundaries was not observed; instead, distinct clusters with morphologies similar to the secondary grains were formed. The ancillary growth obeys approximately the parabolic relation L = (Kt)1/n+1 where n = 1 justifies grain growth in the pure crystals, and its formation is ascribed to the dissolution of dendrites, edges and corners. The high interfacial activity and interparticle voids can affect the storage and mechanical properties of the material.
 
Publisher CHAPMAN HALL LTD
 
Date 2011-07-20T06:16:02Z
2011-12-26T12:51:19Z
2011-12-27T05:37:56Z
2011-07-20T06:16:02Z
2011-12-26T12:51:19Z
2011-12-27T05:37:56Z
1991
 
Type Article
 
Identifier JOURNAL OF MATERIALS SCIENCE, 26(11), 3004-3008
0022-2461
http://dx.doi.org/10.1007/BF01124835
http://dspace.library.iitb.ac.in/xmlui/handle/10054/5377
http://hdl.handle.net/10054/5377
 
Language en