Film-forming treatment liquid
AssigneeOkuno Chemical Industries Co., Ltd.
InventorsTaro Konuma, Teruhiko Kagehisa, Masafumi Nozaki, Katsumasa Shimahashi, Takashi Kato
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Abstract
An object of the present invention is to provide a treatment liquid and a treatment method that are capable of enhancing the corrosion resistance of a metal material. This object is achieved by, after forming a chemical conversion treatment film on the surface of a metal material, forming a film using a film-forming treatment liquid, the treatment liquid comprising: a silicon compound containing at least one member selected from the group consisting of alkoxysilyl, alkoxysilylene, and a siloxane bond; an organometallic compound; and water.
Claims8
A film formation method comprising
- step D of applying a film-forming treatment liquid to a metal material having a silicic acid conversion treatment film, and
- step C of applying a silicic acid conversion treatment liquid to a metal material before step D to obtain the metal material having a silicic acid conversion treatment film,
- (a) the film-forming treatment liquid comprising:
- a silicon compound comprising a resin, wherein the resin comprises at least one member selected from the group consisting of alkoxysilyl, alkoxysilylene, and a siloxane bond, and wherein the resin has a weight average molecular weight of 11000 to 200000;
- a non-silicon resin, wherein the non-silicon resin is selected from the group consisting of epoxy resins, urethane resins, polyester resins and melamine resins;
- an organometallic compound;
- and water, and
- (b) the silicic acid conversion treatment liquid comprising at least one silicic acid compound selected from the group consisting of lithium silicate, sodium silicate, potassium silicate, ammonium silicate, choline silicate, calcium silicate, magnesium silicate, and hexafluorosilicic acid,
- (c) the silicate ion concentration in the silicic acid conversion treatment liquid is 10 g/L to 700 g/L.
Dependencies are inferred from the claim text.