Solution for electrolytically removing chromium carbide coating and method for same

Abstract

A solution and method for electrolytically removing chromium carbide coatings from the surface of substrates are provided. The solution includes 20-200 g/L alkali, the alkali being soluble alkali metal hydroxides; 20-150 g/L accelerant, the accelerant being a complexant and can combine with chromium ion; and 0.5-10 g/L auxiliary agent, the auxiliary agent being soluble polyphosphates. The method for removing chromium carbide coating on the substrate mainly includes electrolysis using the substrate having the coating as the anode and using the solution as the electrolyte.

Dependencies are inferred from the claim text.