Interface Resistance between FeCr Interconnects and La0.85Sr0.15Mn1.1O3

Lars Mikkelsen, Kai Neufeld, Peter Vang Hendriksen

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    Abstract

    The long term oxidation behaviour and the electrical interface resistance between FeCr interconnects and La0,85Sr0,15Mn1,1O3 plates was studied by a DC four-point method in air at 750{degree sign}C for 10000 h. The tested FeCr alloys were: Crofer 22 APU, Sanergy HT, Plansee IT10, Plansee IT11, and Plansee IT14. The alloys were slurry sprayed with a dual layer coating consisting of an inner Co3O4 layer and an outer layer consisting of La0,85Sr0,15Mn1,1O3 with some Co3O4 added. The microstructure and composition of the oxide scales formed at the interfaces were investigated using SEM/EDX analysis. Low degradation rates of less than 1 mcm2/1000 h were measured on all interfaces. The microstructure analysis showed that a duplex Cr2O3-(Mn,Co,Cr)3O4 oxide scale with a thickness of 3-5 µm had evolved on the alloys.
    Original languageEnglish
    JournalE C S Transactions
    Volume25
    Issue number2
    Pages (from-to)1429-1436
    ISSN1938-5862
    DOIs
    Publication statusPublished - 2009
    Event216th ECS Meeting: 11th International Symposium B10 - Solid Oxide Fuel Cells - Vienna, Austria
    Duration: 4 Oct 20099 Oct 2009
    Conference number: 216
    http://www.electrochem.org/meetings/biannual/216/216.htm

    Conference

    Conference216th ECS Meeting
    Number216
    Country/TerritoryAustria
    CityVienna
    Period04/10/200909/10/2009
    Internet address

    Bibliographical note

    Copyright The Electrochemical Society, Inc. [2009]. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS).

    Keywords

    • Solid Oxide Fuel Cells
    • Fuel Cells and hydrogen

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