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Interface stability between bare,MnCo spinel coated AISI 441 stainless steel and a diopside-based glass-ceramic sealant
Authors:AG Sabato  A Chrysanthou  M Salvo  G Cempura  F Smeacetto
Affiliation:1. Department of Applied Science and Technology (DISAT), Politecnico di Torino, Italy;2. School of Engineering and Technology, University of Hertfordshire, Hatfield, UK;3. Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Krakow, Poland
Abstract:This study is focused on a diopside-based glass-ceramic sealant for solid oxide fuel cells and its compatibility with AISI 441 stainless steel interconnect. The morphological and chemical stability with both bare and Mn/>Co spinel coated AISI 441 steel, after 3500 h exposure at 800 °C in air, is reviewed and discussed. Post-mortem samples are morphologically and chemically analysed by SEM-EDS. Reaction products at the glass-ceramic/bare AISI 441 interface, resulting from the reaction of Mg from the sealant and Cr and Mn from the steel, are detected, without affecting negatively the integrity of the joints. In the case of Mn<img style=
Keywords:Solid oxide cell  Glass-ceramic  Sealant  Spinel coating  Compatibility  Electron microscopy
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