Record Details

Smart technique for fabrication of zinc oxide varistor

DSpace at IIT Bombay

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Title Smart technique for fabrication of zinc oxide varistor
 
Creator BANERJEE, A
RAMAMOHAN, TR
PATNI, MJ
 
Subject precursor powders
ceramics
ceramics
electronic material
chemical synthesis
microstructure
electrical properties
 
Description This paper describes a smart and industrially suitable technique for preparing a high performance ZnO varistor from doped zinc oxide powder. A homogeneous distribution of various dopants in the mixed powder has been achieved by coating ZnO powder with a mixed solution of dopants in the form of acetates, nitrates and citrates. The mixed powder on subsequent drying, calcination. and sintering, produced varistors with better nonlinear electrical properties (alpha = 51) compared to varistors prepared from conventional oxide mixing technique (alpha = 30). The better nonlinear properties of solution coating route varistors have been attributed to the presence of uniform potential barriers throughout the entire microstructure, which in turn is credited to the uniform distribution of dopant ions at each grain and grain boundary region. (C) 2001 . .
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2011-08-26T13:21:48Z
2011-12-26T12:57:27Z
2011-12-27T05:41:34Z
2011-08-26T13:21:48Z
2011-12-26T12:57:27Z
2011-12-27T05:41:34Z
2001
 
Type Article
 
Identifier MATERIALS RESEARCH BULLETIN, 36(7-8), 1259-1267
0025-5408
http://dx.doi.org/10.1016/S0025-5408(01)00611-0
http://dspace.library.iitb.ac.in/xmlui/handle/10054/11323
http://hdl.handle.net/10054/11323
 
Language en