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Sassolite Formation in Glass Powders: A Novel Method to Study Phase Separation in Alkali Borosilicate Glass Compositions

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Title Sassolite Formation in Glass Powders: A Novel Method to Study Phase Separation in Alkali Borosilicate Glass Compositions
 
Creator KUMAR, CJD
SHADIYA, MA
SUNNY, EK
RAGHU, N
VENKATARAMANI, N
KULKARNI, AR
 
Subject immiscibility
 
Description This paper reports, for the first time, observation of sassolite (crystalline B(OH)(3)) formation in alkali borosilicate glass (BSG) powder due to hydration during aging. Correlation between hydration behavior, sassolite formation, and phase separation has been established and hydration-resistant low-alkali BSG powders were successfully prepared. The glass composition exhibited very low moisture absorption of < 3 wt% in powder form, for an aging duration of 6000 h. This has been achieved by carefully tailoring the glass transition temperature (T(g)) and critical immiscibility temperature (T(c)). We also report a new, simple, and effective sample preparation method for detecting phase separation in BSG, using transmission electron microscopy.
 
Publisher WILEY-BLACKWELL PUBLISHING, INC
 
Date 2011-09-01T12:34:47Z
2011-12-26T12:59:39Z
2011-12-27T05:52:12Z
2011-09-01T12:34:47Z
2011-12-26T12:59:39Z
2011-12-27T05:52:12Z
2010
 
Type Article
 
Identifier JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 93(10), 3027-3030
0002-7820
http://dx.doi.org/10.1111/j.1551-2916.2010.04004.x
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12779
http://hdl.handle.net/10054/12779
 
Language en