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Surface treating agent for metallic materials

A technology for surface treatment agents and metal materials, applied in metal material coating technology, anti-corrosion coatings, coatings, etc., can solve problems such as the inability to replace surface-treated steel plates and the inability to inhibit the dissolution of metal compounds

Active Publication Date: 2011-11-23
NIHON PARKERIZING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this technology, a silane coupling agent is bound to the surface of silica, so the silica components can be immobilized, but the dissolution of metal compounds cannot be suppressed
[0019] As mentioned above, none of the methods can obtain a surface-treated steel sheet that can replace the chromate coating, and there is a strong need to develop a surface treatment agent that can comprehensively satisfy various characteristics such as corrosion resistance and outer layer coating properties, and in particular, can improve the surface treatment agent. Adhesion between the formed film and metal materials, and the ability to manufacture surface-treated steel sheets that can suppress corrosion of metal materials

Method used

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  • Surface treating agent for metallic materials
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Examples

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Effect test

preparation example Construction

[0141] The preparation method of the surface treatment agent for metal materials of the present invention is not particularly limited. For example, the silicic acid compound (A), organoalkoxysilane (B), metal compound (C), phosphoric acid compound and / or fluorine compound (D) and water (E) can be fully mixed using a mixer such as a mixer. Mix to make.

[0142]

[0143] The surface treatment method using the surface treatment agent for metal materials of the present invention is not particularly limited, but the following surface treatment methods are preferred: the above-mentioned surface treatment agent for metal materials is coated on the surface of the metal material, heated and dried, and then applied to the metal material. The amount of film formed on the surface is 2 to 1000 mg / m in terms of Si adhesion 2 of the film.

[0144] Hereinafter, this surface treatment method will be described.

[0145] Before coating, if necessary, the metal material may be pretreated for...

Embodiment

[0157] Hereinafter, the effects of the present invention will be described through examples and comparative examples, but this example is merely an example for explaining the present invention and does not limit the present invention.

[0158] 1. How to make the test board

[0159] (1) Test materials (materials)

[0160] The following commercially available materials were used as test materials.

[0161] (i) Galvanized steel sheet (EG): plate thickness 0.8mm, weight per unit area = 20 / 20(g / m 2 )

[0162] (ii) Hot-dip galvanized steel sheet (GI): plate thickness 0.8mm, weight per unit area = 60 / 60(g / m 2 )

[0163] (iii) Alloyed hot-dip galvanized steel sheet (GA): plate thickness 0.8 mm, weight per unit area = 40 / 40 (g / m 2 )

[0164] In addition, the weight per unit area represents the weight per unit area on the main surface of each steel plate. For example, in the case of electro-galvanized steel sheets, it is 20 / 20 (g / m 2 ), refers to the two sides of the steel plate...

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Abstract

Disclosed is a surface treating agent for metallic materials that has various properties such as corrosion resistance and overcoating properties and, when used in coating-type surface treatment, particularly can form a film , which has excellent adhesion to the surface of metallic materials, and can fix, within the film, a component capable of functioning as a corrosion inhibitor for metallic materials. The surface treating agent for metallic materials comprises a silicic acid compound (A), an organoalkoxysilane (B), a metallic compound (C) containing at least one metal element selected from the group consisting of Zr, Ti, Co, Fe, V, Ce, Mo, Mn, Mg, Al, Ni, Ca, W, Nb, Cr, and Zn, at least one compound (D) selected from the group consisting of phosphoric acid compounds and fluoro compounds, water (E), and an alcohol (F) produced upon hydrolysis of the organoalkoxysilan (B). The molar concentration (mol / L) of the alcohol (F) in the treating agent has been regulated in a predetermined range.

Description

technical field [0001] The present invention relates to a surface treatment agent for metal materials, a surface treatment method using the surface treatment agent for metal materials, and a surface-treated metal material having a film. Background technique [0002] Surface treatments are applied to metallic materials for corrosion resistance or paintability. That is, by surface treatment, it is important to obtain the effects of suppressing corrosion of the metal, or preventing peeling of the coating film during coating, or preventing corrosion of the part even if the coating film peels off. Conventionally, as the surface treatment of metal-based materials, phosphate treatment for depositing crystals of phosphoric acid metal salts and chromate treatment for forming a film containing hexavalent chromium have been performed. [0003] In the phosphate treatment, first, a metal material is brought into contact with an aqueous solution containing phosphoric acid and metal ions....

Claims

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Application Information

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IPC IPC(8): C23C22/05C09D5/08C09D7/12C23C22/07C23C22/34
CPCC23C22/34C23C2222/20C23C22/362C09D5/084C23C22/74C23C22/42C23C22/44C23C22/00C23C22/07
Inventor 内田淳一水野贤辅佐藤世一
Owner NIHON PARKERIZING
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