PREPROCESSING METHOD FOR ELECTROPLATING OF A MAGNESIUM ALLOY USING AN ETHYLENE GLYCOL-NITRIC ACID SOLUTION

摘要

PURPOSE: A preprocessing method for electroplating of a magnesium alloy is provided to effectively prevent stains on the surface of the magnesium alloy after pickling by using an ethylene glycol-nitric acid solution as pickling solution.;CONSTITUTION: A preprocessing method for electroplating of a magnesium alloy comprises a step of pickling the magnesium alloy at 35-50°C with an ethylene glycol-nitric acid solution(S110) which comprises 75vol.% of ethylene glycol, 12vol.% of nitric acid, 3vol.% of phosphoric acid, and 10vol.% of water.;COPYRIGHT KIPO 2013;[Reference numerals] (S110) Step of pickling magnesium alloy with ethylene glycol-nitric acid solution; (S130) Step of washing the pickled magnesium alloy with caustic soda solution