Patent ID: 8377324
Filing Date: 2013-02-19
Classification: C23F,C25F

Abstract:
1. A method for removing a coating including an outer layer and an inner layer between the outer layer and an underlying metal component, the method comprising: removing the outer layer of the coating with a first stripping operation by contacting the outer layer with a first aqueous bath; removing the inner layer of the coating with a second stripping operation by contacting the inner layer with a second aqueous bath that is chemically different from the first aqueous bath, the second aqueous bath having a composition that includes water, an active oxygen source, and a ligand; at least partially removing the coating from the contacted portion of the metal component while the metal component portion is in contact with the second aqueous bath; and specifying the first aqueous bath for the first stripping operation based upon an element in the outer layer or the second aqueous bath for the second stripping operation based upon an element in the inner layer.