Importance

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Abstract

An aperture plate comprises a plate body having a top surface, a bottom surface, and tapered walls that form a plurality of apertures that taper from the bottom surface to the top surface wherein the plate body comprises a base material and a corrosion resistive material plating at least the tapered walls. The aperture plate can be produced by electroplating a mandrel wherein the mandrel is placed within a solution containing a material that is to be deposited onto the mandrel. Electrical current is applied to the mandrel to form the aperture plate on the mandrel. The process can be repeated so as to deposit a second layer, such as a corrosion resistive material, over a base layer material. In such fashion, a laminated electroformed aperture plate can be produced.

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First Claim