| abstract |
PROBLEM TO BE SOLVED: To provide a metal surface treating agent, a metal surface treating method, and a surface treated metal having excellent corrosion resistance and conductivity of a film, and excellent coating adhesion when an overcoat film is formed on the film. Provide materials. SOLUTION: The aqueous coating agent for a metal material contains an aqueous dispersion resin in a solid content concentration of 5 to 30% by mass and a silica fine particle in an amount of 1 to 1%. 0% by mass, 0.02 to 5% by mass of at least one compound selected from an organic inhibitor group consisting of a urea compound, a guanidine compound, a phosphonate compound, a thiophosphate compound, a phosphine oxide compound and a phosphine sulfide compound; An aqueous composition containing 0.01 to 0.5% by mass of an ion, wherein the aqueous dispersion resin has 30% of carboxyl groups of an ethylene-unsaturated carboxylic acid copolymer containing 10 to 30% by mass of an unsaturated carboxylic acid. % Is neutralized with potassium ions, and is an aqueous dispersion obtained by reacting an ionomer resin water-dispersed with an epoxy compound. |