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Microstructure film forming solution on metal surface

A technology of microstructure and metal surface, applied in the direction of metal material coating process, etc., can solve the problems of insufficient coating performance and rust prevention effect, and achieve the effects of excellent electrical characteristics, improved adhesion, and improved adhesion

Active Publication Date: 2016-08-31
盐泽明 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patent uses acetic acid and fatty acid as a rust remover / antirust agent, and there is no disclosure or suggestion for the structure formed on the metal surface by using the liquid, and the coating performance when used as a coating base treatment and Anti-rust effect is not enough

Method used

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  • Microstructure film forming solution on metal surface
  • Microstructure film forming solution on metal surface
  • Microstructure film forming solution on metal surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0117] 20% by mass of the above-mentioned aqueous phosphoric acid solution, 0.1% by mass of the above-mentioned malic acid, 0.03% by mass of the above-mentioned perfluoroalkyl ethylene oxide adduct (nonionic fluorine-based surfactant), and the remaining amount of water were mixed, and These are mixed to prepare a film-forming liquid.

[0118] Next, among the above-mentioned steel members, a member having rust on its surface was immersed in the obtained film-forming solution (40° C.) for 20 minutes. Rust on the surface of the steel member is removed, and a microstructure coating is formed on the surface of the steel member.

[0119] SEM was carried out on the surface of the steel member with this coating at 3,000 magnifications and 10,000 magnifications using a high-resolution field emission scanning electron microscope model ERA-8900 (manufactured by ELIONIX INC. / Electron beam three-dimensional roughness analysis device with EDX) shooting, and the results are shown in fig...

Embodiment 2

[0122] Use the above-mentioned oligomers (nonionic fluorosurfactants) containing fluorine-containing groups / hydrophilic groups / lipophilic groups instead of the aforementioned perfluoroalkyl oxirane adducts (nonionic Fluorine surfactant), except that it was carried out similarly to Example 1, and this steel member which rusted was immersed in the film formation solution. Rust on the surface of the steel member is removed, and a microstructure coating is formed on the surface of the steel member.

[0123] Using a high-resolution field emission type scanning electron microscope model S-4800 (manufactured by Hitachi, Ltd.), SEM photographs were carried out at 3000 times and 10,000 times the surface of the steel member with the coating, and the results are shown in figure 2 (a) and figure 2 (b).

[0124] It was found that the obtained fine structure had an uneven shape of about 1 μm.

Embodiment 3

[0126] Except having used the above-mentioned tartaric acid instead of the above-mentioned malic acid, it carried out similarly to Example 1, and immersed this steel member which rusted in the film formation solution. Rust on the surface of the steel member is removed, and a microstructure coating is formed on the surface of the steel member.

[0127] Operate in the same manner as in Example 2, take SEM photographs of the microstructure, and the results are shown in image 3 (a) and image 3 (b). It was found that the obtained fine structure had an uneven shape of about 1 μm.

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Abstract

The purpose of the present invention is to provide a liquid for forming a microstructure film on a metal surface with which, by the simple immersion of a metal product in the liquid or the application or spraying of the liquid onto the metal product, it is possible to completely remove rust from the surface of the metal product, form a microstructure film having crystals or irregularities of 1 µm or smaller on the surface of the metal product such that the surface area is increased, impurities are prevented from penetrating inside the crystals, and the film easily imitates deformation of the metal substrate. The liquid for forming a microstructure film on a metal surface comprises, as the essential components, phosphoric acid, an inorganic acid, a nonionic fluorine surfactant, and water, and contains 2 to 60 mass% of phosphoric acid, 0.02 to 5 mass% of an organic acid, and 0.005 to 0.2 mass% of a nonionic fluorine surfactant.

Description

technical field [0001] The present invention relates to a liquid for forming a fine structure on a metal surface. Specifically, the present invention relates to a liquid for forming a fine structure film on a metal surface capable of forming a film of a fine concave-convex structure on the metal surface. Background technique [0002] At present, it is estimated that 1 ton per minute, that is, about 500,000 tons of iron per year, is rusted all over Japan (Masuko Noboru, professor emeritus of the University of Tokyo, published by the Japan Standards Association). [0003] Deterioration of materials that cause failures in machines, structures, piping systems, etc. that use metal materials can be broadly classified into three types: corrosion, embrittlement, and fatigue. Corrosion brittleness is mostly caused and promoted by "rust". Chemical, corrosion fatigue, and failures caused by "rusting" of metal materials mostly produce a large number of chain reactions, resulting in grea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/36C23C22/08
CPCC23G1/083C23C22/08C23G1/088
Inventor 盐泽明楯恒夫佐藤幸弘川村绿白鸟刚白鸟聪
Owner 盐泽明
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