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Composition, method for roughening stainless steel surface using same, roughened stainless steel, and method for producing same

A processing method, stainless steel technology, applied in structural parts, electrical components, battery electrodes, etc., can solve problems such as roughening, and achieve the effect of fewer processes and high efficiency.

Pending Publication Date: 2022-03-11
MITSUBISHI GAS CHEM CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with this treatment method, there are still many flat surfaces on the surface of the treated stainless steel, so it cannot be said that it is necessarily roughened enough to be usable for the above-mentioned application.
[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 been found (for example, Patent Document 2), and if these methods are used, many steps are required
Therefore, it is considered that there is still room for improvement regarding the efficiency of the roughening process

Method used

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  • Composition, method for roughening stainless steel surface using same, roughened stainless steel, and method for producing same
  • Composition, method for roughening stainless steel surface using same, roughened stainless steel, and method for producing same
  • Composition, method for roughening stainless steel surface using same, roughened stainless steel, and method for producing same

Examples

Experimental program
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Effect test

Embodiment 1

[0153] A stainless steel foil made of SUS444 was prepared with a thickness of 20 μm, a vertical and horizontal length of 30 mm×30 mm, and a material of SUS444. The stainless steel foil had Rz of 0.48 μm and Ra of 0.07 μm measured according to the aforementioned “Measurement of Surface Roughness of Stainless Steel Foil”.

[0154] A composition in which 7 mass % (14 g) of sodium persulfate and 28 mass % (57 g) of a 35 wt % aqueous solution of hydrochloric acid were added to 129 ml of ultrapure water was prepared. Halide ions from hydrochloric acid (Cl - ) concentration is 10% by mass based on the total amount of the composition.

[0155] First, the above-mentioned stainless steel foil was immersed in the above-mentioned composition at a liquid temperature of 45° C. for 60 seconds. Then, the impregnated stainless steel foil was sufficiently washed with ultrapure water, and then sufficiently dried to obtain a surface-treated foil. The obtained surface-treated foil was observed ...

Embodiment 2～5

[0157] As shown in the following Table 1, in addition to changing the sodium persulfate and chloride ion (Cl - ) concentration, the surface of the stainless steel foil was treated in the same manner as in Example 1, and the surface roughness and etching rate were measured. The values ​​of Rz, Ra, and etching rate are listed in Table 1.

Embodiment 6

[0159] As shown in Table 1 below, the surface of the stainless steel foil was treated in the same manner as in Example 1 except that the stainless steel foil to be roughened was changed, and the surface roughness and etching rate were measured. The values ​​of Rz, Ra, and etching rate are listed in Table 1.

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Abstract

Provided are: a composition capable of sufficiently and efficiently roughening the surface of stainless steel with a small number of steps; a method for roughening stainless steel; and the like. The above-mentioned problem is solved by a composition for roughening the surface of stainless steel, the composition containing 0.1-25 mass% of one or more elements selected from the group consisting of persulfuric acid and persulfate salts based on the total amount of the composition, and containing 1-30 mass% of halide ions based on the total amount of the composition.

Description

technical field [0001] The present invention relates to a composition, and in particular, to a composition used for surface treatment of stainless steel, a method for roughening the surface of stainless steel, and the like. Background technique [0002] Due to the characteristics of excellent durability and weather resistance, stainless steel has been researched and developed in various fields in recent years. For example, the adoption of stainless steel is advancing in housings for electronic components, battery current collector foils, and automotive parts. Specifically, when stainless steel is used for battery current collector foils and automobile parts cases, the surface of the stainless steel is roughened for the purpose of adhering dielectric substances and organic substances. In addition, when stainless steel is used for heat dissipation, the surface of the stainless steel is roughened for the purpose of promoting heat dissipation. [0003] When stainless steel is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F1/28
CPCC23F1/28H01M4/669H01M4/667H01M4/70
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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