METHOD OF SURFACE TREATMENT FOR MAGNESIUM AND/OR MAGNESIUM ALLOY, AND MAGNESIUM AND/OR MAGNESIUM ALLOY PRODUCT

摘要

A method of surface treatment for magnesium and/or a magnesium alloy, which comprises treating magnesium and/or the magnesium alloy with an aqueous chemical treatment solution (A) containing 0.001 to 10 mass % of a carbonate salt compound. The method of surface treatment combines the use of a treating agent which is substantially free of a substance harmful to the environment or a human body and a low electric resistance of the resulting coating film.