Aqueous composition, method for roughening stainless steel surface in which same is used, roughened stainless steel, and method for manufacturing same

A technology of water-based composition and treatment method, which is applied in the direction of structural parts, electrical components, battery electrodes, etc., to achieve the effect of less number of processes

Pending Publication Date: 2022-01-07
MITSUBISHI GAS CHEM CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to this treatment method, since even the surface of the treated stainless steel has many flat surfaces, it is not necessarily roughened enough for the above-mentioned use
[0004] In addition, as a method of roughening the surface of stainless steel, a method of combining wet shot peening and roughening with a chemical solution has also been found (for example, Patent Document 2), but these methods require a plurality of steps
Therefore, it was found that there is room for improvement in the efficiency of the roughening treatment

Method used

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  • Aqueous composition, method for roughening stainless steel surface in which same is used, roughened stainless steel, and method for manufacturing same
  • Aqueous composition, method for roughening stainless steel surface in which same is used, roughened stainless steel, and method for manufacturing same
  • Aqueous composition, method for roughening stainless steel surface in which same is used, roughened stainless steel, and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0132] A stainless steel foil having a thickness of 20 μm, a vertical and horizontal length of 30 mm×30 mm, and a material of SUS304 was prepared. Rz of this stainless steel foil measured according to the said "measurement of surface roughness of stainless steel foil" was 1.2 micrometers, and Ra was 0.2 micrometers.

[0133] In the ultrapure water of 130ml, add the hydrogen peroxide of the amount (0.7g of 60wt% aqueous hydrogen peroxide solution) that finally forms 0.2 mass %, the copper sulfate pentahydrate of 6 mass % (12.0g), 29 mass % ( 57.1 g) of a 35 wt% aqueous solution of hydrochloric acid was prepared to prepare an aqueous composition. Copper ions (Cu 2+ ) concentration is 1.5% by mass based on the total amount of the aqueous composition, halide ions (Cl - ) concentration is 10% by mass based on the total amount of the aqueous composition.

[0134] First, the above-mentioned stainless steel foil was immersed in the above-mentioned aqueous composition at a liquid te...

Embodiment 2

[0136] A stainless steel foil having a thickness of 20 μm, a vertical and horizontal length of 30 mm×30 mm, and a material of SUS304 was prepared.

[0137]In the ultrapure water of 124ml, add the hydrogen peroxide of the amount (60wt% hydrogen peroxide aqueous solution 6.7g) that finally forms 2 mass %, the copper sulfate pentahydrate of 6 mass % (12.0g), 29 mass % ( 57.1 g) of a 35 wt% aqueous solution of hydrochloric acid was prepared to prepare an aqueous composition. Copper ions (Cu 2+ ) concentration is 1.5% by mass based on the total amount of the aqueous composition, halide ions (Cl - ) concentration is 10% by mass based on the total amount of the aqueous composition.

[0138] First, the above-mentioned stainless steel foil was immersed in the above-mentioned aqueous composition at a liquid temperature of 40° C. for 60 seconds. Next, the dipped stainless steel foil was sufficiently washed with ultrapure water, and then sufficiently dried to obtain a surface-treated f...

Embodiment 3

[0140] A stainless steel foil having a thickness of 20 μm, a vertical and horizontal length of 30 mm×30 mm, and a material of SUS304 was prepared.

[0141] In the ultrapure water of 70ml, add the hydrogen peroxide of the amount (60wt% hydrogen peroxide aqueous solution 0.7g) that finally forms 0.2 mass %, the copper sulfate pentahydrate of 36 mass % (72.0g), 29 mass % ( 57.1 g) of a 35 wt% aqueous solution of hydrochloric acid was prepared to prepare an aqueous composition. Copper ions (Cu 2+ ) concentration is 9.0% by mass based on the total amount of the aqueous composition, derived from halide ions (Cl - ) concentration is 10% by mass based on the total amount of the aqueous composition.

[0142] First, the above-mentioned stainless steel foil was immersed in the above-mentioned aqueous composition at a liquid temperature of 40° C. for 60 seconds. Next, the dipped stainless steel foil was sufficiently washed with ultrapure water, and then sufficiently dried to obtain a s...

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Abstract

Provided are an aqueous composition with which the surface of stainless steel is adequately roughened in an efficient manner with few steps, a method for roughening stainless steel, etc. The problem mentioned above is solved by an aqueous composition for roughening the surface of stainless steel, the aqueous composition including 0.1-20 mass% of hydrogen peroxide with reference to the total amount of the aqueous composition, 0.25-40 mass% of copper ions with reference to the total amount of the aqueous composition, and 1-30 mass% of halide ions with reference to the total amount of the aqueous composition.

Description

technical field [0001] The present invention relates to an aqueous composition, an aqueous composition used for surface treatment of stainless steel, a method for roughening the surface of stainless steel, and the like. Background technique [0002] Stainless steel has been researched in various fields in recent years because of its excellent durability and weather resistance. For example, the adoption of stainless steel is progressing in electronic components, battery current collector foils, and frames of automotive parts. Specifically, when stainless steel is used for a battery current collector foil or an automobile component frame, the surface of the stainless steel is roughened so that dielectrics and organic substances adhere. In addition, in the case where stainless steel is used for heat dissipation, the surface of the stainless steel is roughened to promote heat dissipation. [0003] In the case of using stainless steel in each product in this application, there ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F1/28
CPCC23F1/28H01M4/669Y02E60/10
Inventor 池田和彦藤井智子松永裕嗣玉井聪
Owner MITSUBISHI GAS CHEM CO INC
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