Flow field plates
First Claim
Patent Images
1. A method of manufacturing a flow field plate comprising:
- a. positioning a particulate etchant-resistant mask comprising a pattern design adjacent a plate; and
b. particulate etching the plate using a particulate etchant and a particulate etchant accelerator so that a fluid flow pattern determined by the pattern design is formed on the plate.
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Abstract
The present invention relates to flow field plates and the manufacture thereof, for use in fuel cells. The method of manufacture comprises particulate etching of a plate material using a particulate etchant (eg. sand blasting), a particulate etchant accelerator and a particulate etchant-resistant patterned mask, such that a fluid flow pattern determined by the pattern design on said mask is formed on the plate material.
104 Citations
22 Claims
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1. A method of manufacturing a flow field plate comprising:
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a. positioning a particulate etchant-resistant mask comprising a pattern design adjacent a plate; and
b. particulate etching the plate using a particulate etchant and a particulate etchant accelerator so that a fluid flow pattern determined by the pattern design is formed on the plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A flow field plate formed by:
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a. positioning a particulate etchant-resistant mask comprising a pattern design adjacent the plate; and
b. particulate etching the plate using a particulate etchant and a particulate etchant accelerator so that a fluid flow pattern determined by the pattern design is formed on the plate.
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Specification