Honeycomb structure and method for production of said structure
First Claim
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1. A bipolar plate for a fuel cell comprising:
- at least two alveolar zones juxtaposed with a common base plate, each zone being partially delimited by an associated leak tight surface of the common base plate,wherein each alveolar zone is formed of a plurality of metallic layers superimposed parallel to the associated leak tight surface, each metallic layer comprising a network of passages opening out on either side of said each metallic layer.
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Abstract
The invention concerns an alveolar structure (1) comprising at least one alveolar zone (2a, 2b) partially delimited by an associated leak tight surface (4a, 4b) . According to the invention, each alveolar zone (2a, 2b) is formed of a plurality of metallic layers (8) superimposed parallel to the associated leak tight surface (4a, 4b), each metallic layer (8) comprising a network of passages (10) opening out on either side of said metallic layer (8).
The invention further concerns a method for manufacturing said alveolar structure (1)
Application to fuel cells and heat exchangers.
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Citations
12 Claims
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1. A bipolar plate for a fuel cell comprising:
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at least two alveolar zones juxtaposed with a common base plate, each zone being partially delimited by an associated leak tight surface of the common base plate, wherein each alveolar zone is formed of a plurality of metallic layers superimposed parallel to the associated leak tight surface, each metallic layer comprising a network of passages opening out on either side of said each metallic layer. - View Dependent Claims (2, 3, 4)
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5. A method of manufacturing an alveolar structure including at least one alveolar zone partially delimited by an associated leak tight surface.
wherein each alveolar zone is formed of a plurality of metallic layers superimposed parallel to the associated leak tight surface, each metallic layer comprising a network of passages opening out on either side of said each metallic layer, wherein each metallic layer is formed by: -
depositing a layer of metallic powder; partially solidifying by laser the layer of deposited metallic powder, leading to formation of solidified parts and non-solidified parts, the solidified parts defining a perimeter of the network of passages of the metallic layer. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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Specification