caa a22 4500 463234480 CHVBK 20180405153252.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s10853-006-1178-1 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1178-1 Symmetric shear test of glass-ceramic sealants at SOFC operation temperature [Elektronische Daten] [Jürgen Malzbender, Josef Mönch, Rolf Steinbrech, Thomas Koppitz, Sonja Gross, Josef Remmel] Glass-ceramics of the BaO-CaO-Al2O3-SiO2 system are frequently used in planar solid oxide fuel cells (SOFC) stacks to seal the fuel and air compartments and to join non-conductively the individual components. Due to the thermal mismatch of the ceramic and metallic materials in the stack, the seals experience predominantly shear stresses. A symmetric shear test has been developed to characterize the critical shear stress of the glass-ceramic at SOFC operation temperature. Specimens representative for the seal situation in an SOFC stack were prepared, using the glass-ceramic to join a center piece of a NiO-YSZ anode covered by yttria-stabilized zirconia (YSZ) electrolyte layers on both surfaces between two Crofer22APU interconnect steel blocks. Shear stress and based on a rheological model, shear modulus and viscosity of the sealant were determined. The investigations showed that the sealant exhibits viscous shear deformation at 800°C, a temperature typical for SOFC operation. The influence of increasing crystallization on the shear deformation is demonstrated. Springer Science+Business Media, LLC, 2007 Malzbender Jürgen Research Centre Jülich (FZJ), Institute for Materials and Processes in Energy Systems, 52425, Julich, Germany aut Mönch Josef Research Centre Jülich (FZJ), Institute for Materials and Processes in Energy Systems, 52425, Julich, Germany aut Steinbrech Rolf Research Centre Jülich (FZJ), Institute for Materials and Processes in Energy Systems, 52425, Julich, Germany aut Koppitz Thomas Research Centre Jülich (FZJ), Central Department of Technology, 52425, Julich, Germany aut Gross Sonja Research Centre Jülich (FZJ), Central Department of Technology, 52425, Julich, Germany aut Remmel Josef Research Centre Jülich (FZJ), Central Department of Technology, 52425, Julich, Germany aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/15(2007-08-01), 6297-6301 0022-2461 42:15<6297 2007 42 10853 https://doi.org/10.1007/s10853-006-1178-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1178-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Malzbender Jürgen Research Centre Jülich (FZJ), Institute for Materials and Processes in Energy Systems, 52425, Julich, Germany aut NATIONALLICENCE 700 1- Mönch Josef Research Centre Jülich (FZJ), Institute for Materials and Processes in Energy Systems, 52425, Julich, Germany aut NATIONALLICENCE 700 1- Steinbrech Rolf Research Centre Jülich (FZJ), Institute for Materials and Processes in Energy Systems, 52425, Julich, Germany aut NATIONALLICENCE 700 1- Koppitz Thomas Research Centre Jülich (FZJ), Central Department of Technology, 52425, Julich, Germany aut NATIONALLICENCE 700 1- Gross Sonja Research Centre Jülich (FZJ), Central Department of Technology, 52425, Julich, Germany aut NATIONALLICENCE 700 1- Remmel Josef Research Centre Jülich (FZJ), Central Department of Technology, 52425, Julich, Germany aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/15(2007-08-01), 6297-6301 0022-2461 42:15<6297 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer