Glass fiber reinforced sealants for solid oxide fuel cells |
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| Affiliation: | 1. Nigde Omer Halisdemir University, Mechanical Engineering Department, 51245, Nigde, Turkey;2. Nigde Omer Halisdemir University, Prof. Dr. T. Nejat Veziroglu Clean Energy Research Center, 51245, Nigde, Turkey;3. Vestel Defense Industry, Universiteler Mah, Ihsan Dogramaci Bul, Titanyum Blok 17/B, Teknokent ODTU, 06800, Ankara, Turkey;4. Yildiz Technical University, Naval Architecture and Marine Engineering Department, T Blok 1. Kat, 34349, Istanbul, Turkey;1. Nigde Omer Halisdemir University, Mechanical Engineering Department, 51245 Nigde, Turkey;2. Nigde Omer Halisdemir University Prof. Dr. T. Nejat Veziroglu Clean Energy Research Center, 51245 Nigde, Turkey;3. Vestel Defense Industry, Universiteler Mah. Ihsan Dogramaci Bul. Titanyum Blok 17/B Teknokent ODTU, 06800 Ankara, Turkey;1. Department of Mechanical and Aerospace Engineering, The Ohio State University, 201 West 19th Avenue, Scott Laboratory, OH 43210, USA;2. NexTech Materials Ltd., 404 Enterprise Drive, Lewis Center, OH 43035, USA;1. Department of Applied Science and Technology, Politecnico di Torino, Italy;2. AGH University of Science and Technology, Krakow, Poland;3. SOLIDPOWER SpA, Italy;4. School of Engineering and Technology, University of Hertfordshire, Hatfield, UK;5. Department of Industrial Engineering, Universita'' degli Studi di Padova, Italy;6. Inter-Departmental Research Center for the Study of Cement Materials and Hydraulic Binders (CIRCe), Universita'' degli Studi di Padova, Italy;1. Ceramics and Glass Institute (CSIC), C/Kelsen 5, 28049, Madrid, Spain;2. Forschungzentrum Jülich GmbH, IEK-2, 52425, Jülich, Germany;3. Department of Physics, State University of Ponta Grossa, 84.030-000, Ponta Grossa, PR, Brazil |
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| Abstract: | Novel sealants for solid oxide fuel cells are developed by addition of glass fiber into glass-ceramic as a reinforcement material. Various sealants including three different fiberglass types and four different structural designs are fabricated. The mechanical and sealing performances of the sealants are investigated via tensile and short stack leakage tests, respectively. The tensile tests reveal that the fracture strength of the sealants varies depending on the type and number of the glass fiber used. In general, the sealants having relatively high number of glass fiber layers exhibit relatively low joining strength. The best bonding strength values are obtained from the sealants having a structure where a single glass fiber layer is sandwiched between two glass-ceramic layers. The sealing performance tests are performed for the sealants showing the highest and lowest fracture strengths in the tensile tests as well as for the sealant without glass fiber addition as a base case for a comparison. The results indicate that it is possible to obtain a gas-tight sealing at high temperatures under all pressures studied, whereas leakage occurs at room temperature for all cases considered. However, the sealing performance is found to be related with the mechanical strength of the sealants. |
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| Keywords: | Solid oxide fuel cell Sealant Glass-ceramic Glass fiber Tensile tests Sealing performance |
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