Wet seal caulk with enhanced chemical resistance
AssigneeFuelCell Energy, Inc.
InventorsMatthew T. Snider, Chao-yi Yuh
Life of this patent
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Abstract
A caulk composition includes: at least one powder component and at least one binder component. The powder component is a ball-milled powder component comprising ceria, zirconia, alumina, or a combination thereof. The powder component is a heat-treated powder component that has been heated to a temperature of at least 1500° C. The powder component is present in a concentration range of 65 wt % to 75 wt % of the caulk composition. The powder component has a particle size distribution of 95% less than 25 μm and 90% greater than 1 μm. The binder component is present in a concentration range of 25 wt % to 35 wt % of the caulk composition.
Claims20
A caulk composition comprising:
- at least one powder component, wherein:
- the powder component is a ball-milled powder component comprising ceria, zirconia, alumina, or a combination thereof,
- the powder component is a heat-treated powder component that has been heated to a temperature of at least 1500° C.,
- the powder component is present in a concentration range of 65 wt % to 75 wt % of the caulk composition, and
- the powder component has a particle size distribution of 95% less than 25 μm and 90% greater than 1 μm;
- and
- at least one binder component, wherein the binder component is present in a concentration range of 25 wt % to 35 wt % of the caulk composition.
A molten carbonate fuel cell (MCFC) comprising:
- a fuel cell stack;
- a manifold;
- and
- a caulk between the fuel cell stack and the manifold, the caulk comprising:
- at least one powder component, wherein:
- the powder component is a ball-milled powder component comprising ceria, zirconia, alumina, or a combination thereof,
- the powder component is a heat-treated powder component that has been heated at a temperature of to least 1500° C.,
- the powder component is present in a concentration range of 65 wt % to 75 wt % of the caulk composition, and
- the powder component has a particle size distribution of 95% less than 25 μm and 90% greater than 1 μm;
- and
- at least one binder component, wherein the binder component is present in a concentration range of 25 wt % to 35 wt % of the caulk composition.
Dependencies are inferred from the claim text.