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Chemical interactions between aluminosilicate base sealants and the components on the anode side of solid oxide fuel cells

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Title Chemical interactions between aluminosilicate base sealants and the components on the anode side of solid oxide fuel cells
 
Creator LAHL, N
BAHADUR, D
SINGH, K
SINGHEISER, L
HILPERT, K
 
Subject glass-ceramics
crystallization
 
Description The chemical interactions between several aluminosilicate glasses and components at the anode side of SOFC have been investigated. Severe reactions occur if the modifier ions are Ba and Ca. MgO base sealants have been investigated in detail. The formation of some detrimental phases are seen. Cordierite forms with many reaction mixtures of sealants with ZrO(2) stabilized with 8 mol % Y(2)O(3) (as electrolyte) or nickel (as anode). On the other hand, with oxide dispersion strengthened Cr5Fe1Y(2)O(3) and steel, another detrimental phase, cristobalite, is favored. There appears to be a competitive formation of these two detrimental phases in some cases. In some of the interactions none of the detrimental phases appears. The diffusion behavior of the cations across the interfaces has been investigated. Among all the cations, chromium diffuses the maximum. The diffusion coefficient of chromium for the diffusion couples of different sealants with ODS alloy have been determined. (C) 2002 The Electrochemical Society.
 
Publisher ELECTROCHEMICAL SOC INC
 
Date 2011-07-21T14:31:59Z
2011-12-26T12:52:02Z
2011-12-27T05:38:58Z
2011-07-21T14:31:59Z
2011-12-26T12:52:02Z
2011-12-27T05:38:58Z
2002
 
Type Article
 
Identifier JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 149(5), A607-A614
0013-4651
http://dx.doi.org/10.1149/1.1467945
http://dspace.library.iitb.ac.in/xmlui/handle/10054/5895
http://hdl.handle.net/10054/5895
 
Language en