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A kind of electrolytic corrosion solution and application thereof

A technology of electrolytic corrosion and solution, applied in the direction of electrolytic components, electrolytic process, etc., can solve the problems of large difference in real corrosion, pitting corrosion, etc., and achieve the effect of promoting local damage and accelerating corrosion

Active Publication Date: 2021-12-14
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing electrolytic corrosion solutions for steel can effectively form corrosion, the corrosion effect of pitting corrosion cannot be produced on the surface of the steel, and the corrosion morphology is quite different from the real corrosion of the steel in the natural environment

Method used

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  • A kind of electrolytic corrosion solution and application thereof
  • A kind of electrolytic corrosion solution and application thereof
  • A kind of electrolytic corrosion solution and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1), sodium acetate, water, sodium chloride, and blended uniformly into the electrolytic etching solution 1, wherein the mass fraction of 0.5% sodium acetate, sodium chloride 0.2%, the electrolytic etching solution into the electrolytic cell 1 within 2;

[0032] 2), first with # 800 ~ # 1200 waterproof sandpaper progressively polished to a mirror surface of the steel, the steel surface and then washed with acetone, placed in a steel electrolytic etching solution as an anode 3, a carbon rod placed in the electrolytic etching solution 1 as the cathode 4 and the anode 3 and the cathode 4 through the positive electrode lead and the negative electrode is connected to a DC power supply 5, as figure 1 Indicated;

[0033] 3), an anode in the electrolytic cell 23 is energized and the cathode 4, the steel by electrolytic corrosion of the DC power supply 5, the energization current density of 300A / m 2 , Respectively, the energization duration 60min, 120min, 200min.

Embodiment 2

[0035] Example 1 is different from:

[0036] Sodium acetate content of 0.3%, 0.1% sodium chloride.

[0037] Remaining the same as in Example 1, is omitted here.

Embodiment 3

[0039] Example 1 is different from:

[0040] The mass fraction of 0.5% sodium acetate, sodium chloride in the solution is saturated.

[0041] Remaining the same as in Example 1, is omitted here.

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PUM

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Abstract

The invention belongs to the technical field of electrolytic corrosion, in particular to an electrolytic corrosion solution, comprising sodium acetate, sodium chloride and water, the mass fraction of the sodium acetate being ω 1 , the mass fraction of sodium chloride is ω 2 , 0.3% ≤ ω 1 ≤ω 饱和醋酸钠 , 0.1% ≤ ω 2 ≤ω 饱和氯化钠 , ω 饱和醋酸钠 is the mass fraction of sodium acetate in the solution when it is saturated, ω 饱和氯化钠 is the mass fraction of sodium chloride in the solution when it is saturated. In addition, the present invention also relates to the application of the electrolytic corrosion solution. The steel material is placed in the electrolytic corrosion solution as an anode, the inert material is placed in the electrolytic corrosion solution as a cathode, and the anode and cathode are connected to the positive and negative poles of a DC power supply through wires. , electrolytically corroding the steel with electricity, to obtain steel with pitting corrosion morphology. Compared with the prior art, the electrolytic corrosion solution of the invention can corrode steel materials and can produce pitting corrosion.

Description

Technical field [0001] The present invention is an electrolytic etching technique, and in particular relates to an electrolytic etching solution and its application. Background technique [0002] Steel is modern life and industrial production is the most common material, but steel is prone to corrosion under the influence of atmospheric environment and many other factors. For marine atmosphere, since the atmosphere contains a large amount of Cl - Corrosion of steel is particularly serious, once the corrosion can cause serious consequences. [0003] Electrolytic corrosion by the corrosion current caused by external power supply, since the external power supply so that the oxide ions high electrode potential discharging reduced at the cathode, and the electrode potential of the anode region lower than the active metal loss electrons are oxidized to become a cation from the surface of the material, the formation of corrosion of the anode. In the test material as an anode, and placed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25F3/06C25F7/00
CPCC25F3/06C25F7/00
Inventor 司启宗亮丁阳
Owner TIANJIN UNIV