High temperature gas seals
OwnerJen-Jung FAN, Jian LI +2inventors
InventorsJen-Jung FAN, Jian LI, Debabrata GHOSH, Robert BRULE
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Abstract
A flexible seal for use in a solid oxide fuel cell stack is formed from a ceramic fibre matrix impregnated with a plurality of metallic or semi-metallic particles which are then converted to a corresponding ceramic particle, such as by oxidation. The seal may be formed by dipping the fibre matrix into a slurry, suspension or sol-gel of the particles in an alcohol, and then firing the seal to oxidize the metal particles. The seal may also be formed by tape casting a slurry formed from metallic or semi-metallic particles, ceramic fibres and/or ceramic particles.
Claims14
A method of forming a high-temperature gas seal comprising the steps of:
- (a)combining a ceramic component with a reactive component;
- (b)installing the seal in between first and second contact surfaces;
- and
- (c)converting the reactive component to a corresponding ceramic material in situ.
A seal comprising a reactive component and a ceramic component, wherein the reactive component may be converted to a corresponding ceramic material in situ.
A seal comprising a reactive component and a ceramic component, wherein the reactive component comprises a ceramic material which has been converted from a metallic, semi-metallic or metal precursor material to a corresponding ceramic material in situ.
Dependencies are inferred from the claim text.