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US 5,705,082 AGranted
Roughening of metal surfaces
AssigneeChromalloy Gas Turbine Corporation
InventorDavid Hinson
Life of this patent
Estimating the term…
Abstract
A process for roughening a metal surface is provided comprising applying a coating to the metal surface wherein the coating is a temporary barrier to an etchant attacking the metal surface and the coating is susceptible to the etchant gradually removing the coating, and then etching the coated metal surface with an aqueous bath containing the etchant effective to produce a roughened metal surface.
Claims17
Process for roughening a metal surface comprising:
- applying to the metal surface a coating which is a temporary barrier to an etchant attacking the metal surface, wherein the coating is susceptible to being gradually removed by the etchant and to being erratically penetrated by the etchant causing irregular action between the etchant and the metal;
- and
- etching the coated metal surface with an aqueous bath containing the etchant effective to produce a roughened metal surface.
Dependencies are inferred from the claim text.