Sealing Properties of Ceramic Fiber Composites for SOFC Application

Abstract:

For the sealing of solid oxide fuel cells (SOFCs), mid-term (~1,000 h) sealing performance was examined using composite seals prepared with mixtures of a glass and alumino-silicate ceramic fiber. Leak rate could be reduced to < ~0.04 sccm/cm when using a composite seal with 60 vol% glass. Viscosity of the glass at the seal operating temperature of 650
was 2.0×108 dPa·s (log η = 8.3) as estimated by beam-bending method, and found to be suitable for sealing operation.

• Periodical: Solid State Phenomena (Volumes 124-126)
• Pages: 803-806
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.124-126.803
• Online since: June 2007
• Authors: Jae Chun Lee, Hyuk Chon Kwon, Young Pil Kwon, Ju Hyeon Lee, Sung Park
• Keywords: Ceramic Fibre, Glass, Seal, Solid Oxide Fuel Cell (SOFC), Viscosity

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