Composition for Metal Surface Treatment, Metal Surface Treatment Method And Metal Material
2 Assignments
0 Petitions
Accused Products
Abstract
An easily handleable composition for metal surface treatment is provided which achieves foundation surface concealment, coating adhesion and corrosion resistance equal to or higher than those obtained by the conventional metal surface treatment compositions. This composition for metal surface treatment places no burden on the environment. A method for treating the surface of a metal material in which such a composition for metal surface treatment is used, and a metal material treated by such a metal surface treatment method, are also provided. Specifically disclosed is a metal surface treatment composition used for a treatment of a metal surface, which composition contains a zirconium compound and/or titanium compound substantially not containing fluorine, and an inorganic acid and/or a salt thereof. This metal surface treatment composition has a pH of not less than 1.5 but not more than 6.5.
18 Citations
42 Claims
-
1-21. -21. (canceled)
- 22. A metal surface treatment composition used for surface treatment of a metal, containing at least one selected from the group consisting a zirconium compound and titanium compound substantially not including fluorine, and at least one selected from the group consisting an inorganic acid and a salt thereof, and having a pH from 1.5 to 6.5.
- 39. A metal material according to claim 39, having a surface treatment coating layer on an iron-based metal material surface, wherein said surface treatment coating layer contains at least 10 mg/m2 of at least one selected from the group consisting zirconium element and titanium element, and a mass ratio of at least one selected from the group consisting zirconium element and titanium element with respect to nitrogen element according to XPS analysis of said surface treatment coating layer is from 0.05 to 500.
Specification