Designing Sealing Glasses for Solid Oxide Fuel Cells
Abstract
Thermal and chemical properties of "invert" glasses and glass-ceramics developed for hermetic seals for solid oxide fuel cells are described. The glasses crystallize to form thermally stable pyro- and orthosilicate phases with the requisite thermal expansion match to the Y-stabilized ZrO2 (YSZ) electrolyte. In addition, the glasses bond to Cr-steel substrates at 800-850 °C without forming extensive interfacial reaction products. The thermal expansion characteristics of the glass-ceramics remain essentially unchanged after 28 days at 750 °C. Compositions with lower (<2 mol%) B2O3 contents exhibit the lowest volatilization rates when exposed to wet forming gas at 750 °C.
Recommended Citation
S. T. Reis and R. K. Brow, "Designing Sealing Glasses for Solid Oxide Fuel Cells," Journal of Materials Engineering and Performance, Springer Verlag, Aug 2006.
The definitive version is available at https://doi.org/10.1361/105994906X117206
Department(s)
Materials Science and Engineering
Sponsor(s)
Aker Industries Inc.
Sandia Laboratories
Keywords and Phrases
Hermetic Seals; Glass-ceramics; Solid oxide fuel cells
International Standard Serial Number (ISSN)
1059-9495
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2006 Springer Verlag, All rights reserved.
Publication Date
01 Aug 2006
