Patent ID: 6352636
Filing Date: 2002-03-05
Classification: C25F

Abstract:
An electrochemical stripping process for stripping at least one coating from a coated article that comprises a parent alloy, where the parent alloy remains essentially unmodified after the electrochemical stripping process, said process comprising:providing an electrolytic comprising a charge-carrying component in a solvent, wherein said charge-carrying component is selected from at least one of a halide salt, methanesulfonic acid, ammonium hydroxide, sodium chloride, magnesium sulfate, methane sulfonic acid sodium salt, a mixture of sodium carbonate and sodium bicarbonate, oxalic acid disodium salt, acetic acid sodium salt, oxamate, citric acid trisodium salt, lactic acid, malonic acid disodium salt, a mixture of ethylene glycol and ammonium citrate, sodium nitrate and ammonium bifluoride; and said solvent is selected from at least one of diathylene glycol and water, glycerol and water, ethylene carbonate and water, or propylene glycol and water; disposing a coated article and at least one electrode in the electrolyte, the coated article comprising a parent alloy and at least one coating disposed on the parent alloy; applying a current from a power source between the at least one electrode and the coated article; and removing the at least one coating from the coated article without modifying the parent alloy.