FIELD: fuel industry.
SUBSTANCE: invention relates to compositions of high-temperature sealants and can be used for tight connection of dissimilar components of solid oxide fuel cells (SOFC) at temperature of 920–980 °C for long-term operation in temperature range of 800–900 °C. High-temperature sealant contains, they say: %: SiO2—40–50, BaO—16–27, CaO—15–25, B2O3—10–18, Al2O3—2–10.
EFFECT: high adhesion to ZrO2 electrolyte and to steel switching components, thermomechanical compatibility of the proposed composition with SOFC components, as well as a combination of softening temperatures and viscosity at gluing temperature, providing tight sealing of SOFC without spreading of sealant.
1 cl, 2 dwg
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