The chemical finishing treatment method and a finishing agent

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PROBLEM TO BE SOLVED : To provide a finishing agent which is for protecting a chemical conversion coating of a metal surface and is capable of imparting high corrosion resistance even to a thin film not containing chrome. SOLUTION : As the finishing agent for surface treatment for protecting the surface of a metal chemical conversion coating, a silicon compound and a rare earth element are used, and a corrosion resistance improving effect is increased by the interaction of the substances used in a treatment. COPYRIGHT : (C)2012, JPO&INPIT