Patent ID: 10005912

Abstract:
An inorganic chromium-free metal surface treatment agent contains a compound X containing a metal X1, ionic species of which containing the metal X1 become cations in an aqueous solution, and a compound Y containing a metal Y1, ionic species of which containing the metal Y1 become anions in an aqueous solution, a total content of the compound X being from 0.01 to 10% by mass, a total content of the compound Y being from 0.01 to 10% by mass, a molar ratio of the metal X1 in the cation and the metal Y1 in the anion being from 0.1 to 5, the metal X1 being at least one member selected from the group consisting of Ti, Zr and Al, the metal Y1 being at least one member selected from the group consisting of Ti, Zr, Si, B and Al, and the metal surface treatment agent containing substantially no organic resin.