DSpace
 

DSpace at IIT Bombay >
IITB Publications >
Article >

Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/6443

Title: Compatibility of perovskite contact layers between cathode and metallic interconnector plates of SOFCs
Authors: QUADAKKERS, WJ
GREINER, H
HANSEL, M
PATTANAIK, A
KHANNA, AS
MALLENER, W
Keywords: thermal-expansion coefficient
oxide fuel-cell
electrical-conductivity
seebeck coefficient
separator
alloys
ni
Issue Date: 1996
Publisher: ELSEVIER SCIENCE BV
Citation: SOLID STATE IONICS, 91(1-2), 55-67
Abstract: From the viewpoint of corrosion resistance alumina and chromia forming alloys are potential candidate materials for SOFC interconnector plates. However, at the SOFC operating temperatures of around 950 degrees C the first-mentioned alloy type tends to form electrically insulating oxide scale at the interfaces between the interconnector and the ceramic contact layer, the interface oxide consisting of Al2O3 and M(2)O(3+/-x)-nAl(2)O(3). Chromium-based oxide dispersion strengthened (ODS) alloys are more suitable for SOFC applications because the chromia-based scale forming at the interfaces with the contact layers has much higher electronic conductivity than the alumina-based scale. However, upon high-temperature exposure, the composition of the ceramic contact layers is significantly changed due to solid state and vapour phase chromium transport from the alloy into the contact layer, Coatings might be necessary to prevent this degradation mechanism.
URI: http://dx.doi.org/10.1016/S0167-2738(96)00425-0
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6443
http://hdl.handle.net/10054/6443
ISSN: 0167-2738
Appears in Collections:Article

Files in This Item:

There are no files associated with this item.

View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback