Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2006-05-16
2006-05-16
Cantelmo, Gregg (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
C429S006000, C429S047000, C429S047000, C428S701000, C428S702000
Reexamination Certificate
active
07045239
ABSTRACT:
A method of alleviating edge curling when laminated structures comprising layers of green material having different shrinkage rates are sintered comprises applying to a face (18) of edges (14) the first layer (10) having the higher shrinkage rate green sinterable material, opposite to the second layer (12) having the lower shrinkage rate green sinterable material, an edge strip (16) of a green sinterable material also having a shrinkage rate lower than the first layer, and then firing the laminated structure. The edge strip may be partly or, advantageously, wholly embedded in the first layer. The sinterable materials of the second layer and edge strip may be the same or similar. The invention is particularly applicable to solid oxide fuel cell sub-structures in which the first layer is the anode layer and the second layer is the electrolyte layer.
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Donelson Richard
Lin Theresa
Cantelmo Gregg
Ceramic Fuel Cells Limited
Dorsey & Whitney LLP
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