3. High-temperature ceramic gasket
In order to achieve an effective seal between two layers making up an SOFC-type solid fuel cell, a ceramic-matrix solid composite gasket loaded with ceramic or glass flux particles is applied by plasma spraying to one or both of the surfaces to be joined. .
The joint is solid, non-deformable and adheres to its substrate at room temperature. It forms and acquires its properties when the system is put into service at temperature, thanks to a mechanism whereby the melting phase migrates by capillary action into the volume of the ceramic matrix, preferentially towards the interface to be joined.
Figure shows the seal conditioning mechanism.
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High-temperature ceramic gasket
Seal performance
Bibliography
Patents
WO/2006/048573, May 11, 2006, Fuel cell module provided with flexible interconnectors.
WO/2006/048574, May 11, 2006, Fuel cell module, method for the production thereof and a unit comprises a number thereof.
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