Patent ID: 8241744
Filing Date: 2012-08-14
Classification: C23C,Y10T

Abstract:
1. A surface-treated metal material comprising a composite film formed on a surface of a metal material, the composite film containing: an organic silicon compound (W) having two or more functional groups (a) represented by Formula SiR at least one kind of fluorine compound (X) selected from titanium hydrofluoric acid and zirconium hydrofluoric acid; a phosphoric acid (Y); a vanadium compound (Z); and at least one kind of lubricant (J) selected from the group consisting of water dispersible polyethylene wax, polypropylene wax, and polytetrafluoroethylene and has a number average particle size of 0.01 μm to 1.0 μm and a softening temperature of 100° C. or more, wherein the organic silicon compound (W) is obtained by combining a silane coupling agent (A) containing one amino group in a molecule and a silane coupling agent (B) containing one glycidyl group in a molecule, at a solid content mass ratio (A)/(B) of 0.5 to 1.7; and ratios of components of the composite film satisfy the following conditions (1) to (5), respectively: (1) a solid content mass ratio (X)/(W) of the organic silicon compound (W) and the fluorine compound (X) is in the range of 0.02≦(X)/(W)≦0.07, (2) a solid content mass ratio (Y)/(W) of the organic silicon compound (W) and the phosphoric acid (Y) is in the range of 0.03≦(Y)/(W)≦0.12, (3) a solid content mass ratio (Z)/(W) of the organic silicon compound (W) and the vanadium compound (Z) is in the range of 0.05≦(Z)/(W)≦0.17, (4) a solid content mass ratio (Z)/(X) of the fluorine compound (X) and the vanadium compound (Z) is in the range of 1.3≦(Z)/(X)≦6.0, and (5) a solid content mass ratio (J)/(W+X+Y+Z) of the lubricant (J); and the organic silicon compound (W), the fluorine compound (X), the phosphoric acid (Y), and the vanadium compound (Z) is in the range of 0.02≦(J)/(W+X+Y+Z)≦0.12.