The Alloy Design of Metallic Interconnector of Solid Oxide Electrolyte Fuel Cell (SOFC)
This study is intended to reduce the difference of thermal expansion coefficient between metallic interconnector and solid electrolyte of SOFC (Solid Oxide Fuel Cell) without sacrificing of electrical conductivity. Fe-Cr alloys have been chosen as candidate materials due to its merit of low cost and...
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Veröffentlicht in: | Materials science forum 2007-10, Vol.561-565, p.1617-1620 |
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Hauptverfasser: | , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | This study is intended to reduce the difference of thermal expansion coefficient between
metallic interconnector and solid electrolyte of SOFC (Solid Oxide Fuel Cell) without sacrificing of
electrical conductivity.
Fe-Cr alloys have been chosen as candidate materials due to its merit of low cost and high
temperature oxidation resistance. Different amount of alloys element and compositions have been
varied to optimize the properties by method of alloys design with aid of thermodynamics software
Thermal-Cal. Phase diagrams of multi-components alloys have been drawn to predict the possible
stable phases formed in the investigated metals. An arc melter and plasma melting furnace were
used to melt the investigated alloys. The measurements of thermal expansion coefficients and
electrical conductivities are carried out with TMA and ASR resistance instrument. The results
indicate that the Fe-10Cr alloy exhibits the smallest thermal expansion coefficient among the alloys,
while Fe-16Cr has a lowest electrical resistance . |
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ISSN: | 0255-5476 1662-9752 1662-9752 |
DOI: | 10.4028/www.scientific.net/MSF.561-565.1617 |