caa a22 4500 463230825 CHVBK 20180405153241.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s10853-006-1355-2 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1355-2 Chemical interaction between Crofer 22 APU and mica-based gaskets under simulated SOFC conditions [Elektronische Daten] [F. Wiener, M. Bram, H.-P. Buchkremer, D. Sebold] Mica gaskets and also composite gaskets containing compressive mica interlayers are under consideration as sealing materials in solid oxide fuel cells (SOFC). To study potential interactions between the interconnect steel Crofer22APU and the mineral phases vermiculite (exfoliated) (K,Mg,Fe)3(Si,Al)4O10(OH)2) and talc (Mg3Si4O10(OH)2), corrosion experiments were conducted in simulated SOFC conditions. The opposite walls of the gaskets were simultaneously exposed to air and wet H2. A substantial increase in the thickness of the oxide layers formed by the interconnect steel is observed with specimen containing talc. The Cr2O3/(Cr,Mn)3O4 duplex layer normally formed on the Crofer is replaced by a thicker (factor of 5-10) layer of a complex microstructure that is assumed to contain Cr2O3, (Cr,Mn,Mg,Fe)3O4 and Fe2O3 phases. The modified microstructure is found in the entire air manifold, with an increased thickness up to a distance of 300μm from the mica. It is proposed that magnesium is the critical component responsible for the accelerated oxide formation. A decomposition of talc is observed, which is discussed as the mechanism for the release of magnesium. Springer Science+Business Media, LLC, 2006 Wiener F. Institute for Materials and Processes in Energy Systems, IWV, Forschungszentrum Jülich GmbH, Leo-Brandt-Str., 52425, Jülich, Germany aut Bram M. Institute for Materials and Processes in Energy Systems, IWV, Forschungszentrum Jülich GmbH, Leo-Brandt-Str., 52425, Jülich, Germany aut Buchkremer H.-P Institute for Materials and Processes in Energy Systems, IWV, Forschungszentrum Jülich GmbH, Leo-Brandt-Str., 52425, Jülich, Germany aut Sebold D. Institute for Materials and Processes in Energy Systems, IWV, Forschungszentrum Jülich GmbH, Leo-Brandt-Str., 52425, Jülich, Germany aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/8(2007-04-01), 2643-2651 0022-2461 42:8<2643 2007 42 10853 https://doi.org/10.1007/s10853-006-1355-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1355-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wiener F. Institute for Materials and Processes in Energy Systems, IWV, Forschungszentrum Jülich GmbH, Leo-Brandt-Str., 52425, Jülich, Germany aut NATIONALLICENCE 700 1- Bram M. Institute for Materials and Processes in Energy Systems, IWV, Forschungszentrum Jülich GmbH, Leo-Brandt-Str., 52425, Jülich, Germany aut NATIONALLICENCE 700 1- Buchkremer H.-P Institute for Materials and Processes in Energy Systems, IWV, Forschungszentrum Jülich GmbH, Leo-Brandt-Str., 52425, Jülich, Germany aut NATIONALLICENCE 700 1- Sebold D. Institute for Materials and Processes in Energy Systems, IWV, Forschungszentrum Jülich GmbH, Leo-Brandt-Str., 52425, Jülich, Germany aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/8(2007-04-01), 2643-2651 0022-2461 42:8<2643 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer