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Hydrolysis of aluminium metal and sol-gel processing of nano alumina

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Title Hydrolysis of aluminium metal and sol-gel processing of nano alumina
 
Creator THIRUCHITRAMBALAM, M
PALKAR, VR
GOPINATHAN, V
 
Subject sintering behavior
boehmite sol
powders
composites
ceramics
alumina
boehmite
ceramics
nano materials
powder technology
sol-gel preparation
 
Description Aluminium metal has been hydrolysed at 100 degreesC to synthesize boehmite. Gelatinous and dry boehmite were used to prepare stable sol. In the case of gelatinous boehmite, sol was prepared by peptizing and in the case of dry boehmite an ultrasonic bath was used to prepare the sol. Gelation was carried out by heating on a hot plate, which resulted in sol-gel processed powder. For sol-gel processed boehmite the theta --> alpha transformation occurred at 1078 degreesC and for the as prepared boehmite the same occurred at 1206 degreesC. Sol-gel processed powder could be transformed to alpha alumina completely, when calcined at 1000 degreesC for 1 h. (C) 2004
 
Publisher ELSEVIER SCIENCE BV
 
Date 2011-07-25T06:26:34Z
2011-12-26T12:50:03Z
2011-12-27T05:36:00Z
2011-07-25T06:26:34Z
2011-12-26T12:50:03Z
2011-12-27T05:36:00Z
2004
 
Type Article
 
Identifier MATERIALS LETTERS, 58(24), 3063-3066
0167-577X
http://dx.doi.org/10.1016/j.matlet.2004.05.043
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6661
http://hdl.handle.net/10054/6661
 
Language en