Stainless Steel Roughening Chemistry for Single-Step Surface Texturing
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Solution Overview
Problem
Conventional methods for roughening the surface of stainless steel are inefficient and require complex processes, resulting in insufficient roughening and increased treatment time and cost.
Innovation Solution
An aqueous composition comprising hydrogen peroxide, copper ions, and halide ions is used for a single-step roughening treatment of stainless steel, with specific concentrations and conditions to achieve enhanced surface roughness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional treatment solution containing iron chloride is used, then treatment process is simple, but surface roughening is insufficient with many smooth portions remaining
Solution Approach 1:
The patent changes the chemical composition parameters of the treatment solution by replacing iron chloride with copper ions (0.25-40% by mass) combined with hydrogen peroxide (0.1-20% by mass) and halide ions (1-30% by mass). This parameter change enables adequate surface roughening while maintaining a simple single-step treatment process, resolving the contradiction between roughening quality and process complexity.
2Manufacturing precision
If wet peening is combined with chemical roughening treatment, then surface roughening quality improves, but treatment process becomes complex with multiple steps required
Solution Approach 1:
The patent merges the functions of mechanical wet peening and chemical roughening into a single chemical treatment step. The aqueous composition containing copper ions, hydrogen peroxide, and halide ions achieves comprehensive surface roughening in one step, eliminating the need for separate mechanical peening operations and thereby improving treatment efficiency while maintaining roughening quality.
Solution Approach 2:
The patent replaces the mechanical wet peening process with a chemical treatment system using the aqueous composition. This substitution eliminates mechanical equipment and multiple processing steps while achieving equivalent or superior surface roughening, thereby improving productivity and simplifying the treatment process.
3Manufacturing precision
If conventional roughening methods are used, then treatment cost is controlled, but treatment time increases and roughening adequacy is compromised
Solution Approach 1:
The patent optimizes the concentration parameters of copper ions (0.25-40% by mass), hydrogen peroxide (0.1-20% by mass), and halide ions (1-30% by mass) to achieve rapid and adequate surface roughening. These parameter optimizations enable the treatment to reach sufficient roughening levels faster than conventional methods, reducing treatment time while ensuring adequacy.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method efficiently roughens the stainless steel surface with a few steps, increasing the surface area significantly while reducing treatment time and cost, making it suitable for applications like current collector foils and heat dissipation.
Implementation Method 1
an aqueous composition for roughening a surface of stainless steel, which comprises: 0.1 to 20% by mass of hydrogen peroxide, 0.25 to 40% by mass of copper ions, and 1 to 30% by mass of halide ions
Implementation Method 2
a method for roughening stainless steel, which includes a roughening step in which a roughening treatment of the surface of stainless steel is performed by using the aqueous composition
Data Source
AI summary
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.