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US 2011/0256807 A1Published application
Method for stripping nitride coatings
AssigneeCorning Incorporated
InventorsJiangwei Feng, Todd M. Harvey, Shrisudersan Jayaraman, Ljerka Ukrainczyk
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Abstract
Methods for stripping partially oxidized nitride wear or release coatings from metal workpieces comprise disrupting surface oxidation layers present on the coatings following use, and causing electrical current to flow from the workpiece and release coating to a counter electrode while the workpiece, release coating and counter electrode are immersed in an aqueous alkaline electrolyte solution.
Claims18
A method for stripping a partially oxidized nitride release coating from a metal workpiece comprising the steps of:
- disrupting a surface oxidation layer on the release coating to increase release coating electrical conductivity, and
- flowing an electrical current from the workpiece and release coating to a counter electrode while the workpiece, release coating and counter electrode are immersed in an aqueous alkaline electrolyte solution.
Dependencies are inferred from the claim text.