CN112011797A - Corrosion-resistant copper alloy surface treatment method - Google Patents
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/78—Pretreatment of the material to be coated
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/82—After-treatment
- C23C22/83—Chemical after-treatment
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Abstract
The invention discloses a corrosion-resistant copper alloy surface treatment method, which comprises the following steps: cleaning the surface of the copper alloy, oxidizing, activating the surface, performing corrosion-resistant treatment on the copper alloy, cleaning the copper alloy material subjected to the corrosion-resistant treatment by using a solvent, and drying to obtain the corrosion-resistant copper alloy. The invention provides a corrosion-resistant copper alloy surface treatment method, surfaces with complex shapes such as product corners and the like can be subjected to surface treatment, no pits and air holes exist, the bonding strength with a metal base piece is high, the corrosion never occurs, the original mechanical property of the metal base piece can be maintained, the wear resistance and the corrosion resistance can be improved, the surface hardness is improved, formate has a good protection effect on the copper alloy, the corrosion of a copper alloy matrix is effectively inhibited, the service life is prolonged, and the risk caused by corrosion is reduced.
Description
Technical Field
The invention relates to the technical field of metal corrosion prevention, in particular to a corrosion-resistant copper alloy surface treatment method.
Background
The copper alloy has many expensive physical and chemical characteristics, such as high thermal conductivity and electrical conductivity, strong chemical stability, high tensile strength, easy welding, good corrosion resistance, excellent plasticity and extensibility, and is widely applied as an important basic material and a functional material in national economic development, the copper alloy is a second most consumption nonferrous metal with the dosage second to that of the aluminum alloy in China, but the corrosion resistance of the copper alloy, particularly the corrosion resistance under alkaline conditions or high-temperature and high-oxygen environments, the hardness is common, the abrasion resistance is poor, the copper alloy can rapidly lose efficacy in the severe environments, the price of the copper alloy is higher, the performance is further improved, and the protection of the copper alloy is more necessary Inevitably oxidized in the processes of mechanical processing, transportation and storage to generate an oxide layer with uneven thickness, meanwhile, the paint is also easy to be polluted by various oils and absorb some other impurities, oil stains and some adsorbates, a thinner oxide layer can be cleaned by a solvent, chemically treated and mechanically treated in sequence or directly chemically treated, for a heavily oxidized metal surface, the oxide layer is thick, so that the metal surface cannot be directly cleaned by a solvent and chemically treated, the mechanical treatment is preferably carried out firstly, the treated metal surface has high activity and is more easily polluted by dust, moisture and the like again, various industries are continuously updated along with the development of the market, the surface treatment is a new traditional electroplating mode of the market which needs to be developed, and the traditional electroplating mode of the market can not meet the requirements of people day by day, especially, a green and environment-friendly method which does not harm human bodies and does not cause pollution to the environment is urgent to research and develop.
Disclosure of Invention
The invention aims to provide a corrosion-resistant copper alloy surface treatment method, which has the advantages of wide application range, capability of keeping the original mechanical property of a metal base piece and increasing the wear resistance, and solves the problem that the mechanical property of metal is easily damaged by the existing corrosion-resistant treatment.
In order to achieve the purpose, the invention provides the following technical scheme: a corrosion-resistant copper alloy surface treatment method comprises the following steps:
cleaning the surface of the copper alloy;
(1) removing organic matters of the copper alloy material;
(2) washing the copper alloy material with flowing water;
(3) degreasing treatment; firstly, sand blasting or abrasive cloth is adopted for polishing and coarsening, then degreasing is carried out, absorbent cotton is used for wiping with a wetting solvent A, after oil stain is removed, the cotton cloth is used for wiping for 2-4 times;
(4) chemical treatment: soaking in solution B at 25-30 deg.C for 1-3min, washing with water, and drying at 50-60 deg.C;
(5) washing the copper alloy material with water;
(6) and drying the copper alloy material.
(II) oxidation treatment: and chemically oxidizing the pretreated copper alloy in an oxidizing environment.
(III) surface activation: the copper alloy subjected to the oxidation treatment is subjected to surface activation treatment with an activating agent.
(IV) carrying out corrosion resistance treatment on the copper alloy; the copper alloy material is put into a polar solvent containing a corrosion inhibitor, and sealed and reacted in a pressure-resistant container.
And (V) cleaning the copper alloy material subjected to corrosion resistance treatment by using a solvent, and drying to obtain the corrosion-resistant copper alloy.
Preferably, the oxidizing environment in the oxidation treatment in the second step is an acidic solution of a strong oxidant or an alkaline solution of a strong oxidant, and the acidic solution of a strong oxidant comprises one or more of an acidic potassium permanganate solution, an acidic potassium chlorate solution, an acidic hydrogen peroxide solution and an acidic sodium hypochlorite solution; the alkaline solution of the strong oxidant comprises one or more of an alkaline potassium chlorate solution, an alkaline hydrogen peroxide solution, an alkaline sodium hypochlorite solution and an alkaline potassium dichromate solution.
Preferably, the mass percentage concentration of the oxidant in the strong oxidant acidic solution is 0.1% -5%, and the pH value of the acidic solution is 0-3; the mass percentage concentration of the oxidant in the alkaline solution of the strong oxidant is 0.1-5%, and the pH value of the alkaline solution is 11-14; the chemical oxidation method comprises the step of soaking the aluminum alloy in the oxidizing environment at the temperature of 20-80 ℃ for 5s-20 min.
Preferably, the organic solvent for removing the copper alloy material in the first step is selected from ethanol; the time for removing the organic matters in the copper alloy material is 15-100 min.
Preferably, the solvent A in the first step comprises the following components in parts by weight: 10-20 parts of sodium carbonate and 10-20 parts of sodium silicate, wherein the solution B comprises 14.5-18 parts of ferric trichloride, 21-31 parts of concentrated nitric acid and 150-200 parts of water.
Preferably, the activating agent in the surface activation treatment is ethylenediamine or hydrazine hydrate, the treatment method is soaking, the mass percentage concentration of the activating agent is 2-6%, the soaking temperature is 40-60 ℃, and the soaking time is 1-10 min.
Preferably, the water-washed copper alloy material is washed with a solvent, and the solvent is selected from one of ethanol and water; the washing time is 5-100 min.
Preferably, the temperature of the sealing reaction in the fifth step is 20-300 ℃, and the time of the sealing reaction is 0.01-100 h; at least one layer of formate is adsorbed on the surface of the copper alloy.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a corrosion-resistant copper alloy surface treatment method, surfaces with complex shapes such as product corners and the like can be subjected to surface treatment, no pits and air holes exist, the bonding strength with a metal base piece is high, the corrosion resistance can be never rusted, the original mechanical property of the metal base piece can be maintained, the wear resistance and the corrosion resistance can be improved, the surface hardness is improved, formate has a good protection effect on the copper alloy, the corrosion of a copper alloy matrix is effectively inhibited, the service life is prolonged, and the risk caused by corrosion is reduced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: a corrosion-resistant copper alloy surface treatment method comprises the following steps:
cleaning the surface of the copper alloy;
(1) removing organic matters of the copper alloy material;
(2) washing the copper alloy material with flowing water;
(3) degreasing treatment; firstly, sand blasting or abrasive cloth is adopted for polishing and coarsening, then degreasing is carried out, absorbent cotton is used for wiping with a wetting solvent A, after oil stain is removed, the cotton cloth is used for wiping for 2-4 times;
(4) chemical treatment: soaking in solution B at 25-30 deg.C for 1-3min, washing with water, and drying at 50-60 deg.C;
(5) washing the copper alloy material with water;
(6) and drying the copper alloy material.
(II) oxidation treatment: and chemically oxidizing the pretreated copper alloy in an oxidizing environment.
(III) surface activation: the copper alloy subjected to the oxidation treatment is subjected to surface activation treatment with an activating agent.
(IV) carrying out corrosion resistance treatment on the copper alloy; the copper alloy material is put into a polar solvent containing a corrosion inhibitor, and sealed and reacted in a pressure-resistant container.
And (V) cleaning the copper alloy material subjected to corrosion resistance treatment by using a solvent, and drying to obtain the corrosion-resistant copper alloy.
The first embodiment is as follows:
a corrosion-resistant copper alloy surface treatment method comprises the following steps:
cleaning the surface of the copper alloy;
(1) removing organic matters of the copper alloy material;
(2) washing the copper alloy material with flowing water;
(3) degreasing treatment; firstly, adopting sand blasting abrasive cloth to polish, coarsen and degrease, and using absorbent cotton to wet a solvent A for wiping, wherein the solvent A comprises the following components in parts by weight: sodium carbonate 10 and sodium silicate 10, after removing oil stain, wiping with clean cotton cloth for 2 times;
(4) chemical treatment: soaking in solution B at 30 deg.C for 1-3min, washing with water, and drying at 60 deg.C;
(5) washing the copper alloy material with water; the water-washed copper alloy material is washed by a solvent, and the solvent is selected from one of ethanol and water; the washing time is 20 min;
(6) and drying the copper alloy material.
(II) oxidation treatment: carrying out chemical oxidation on the copper alloy subjected to pretreatment in an oxidizing environment; the oxidizing environment in the oxidation treatment is strong oxidizer and is acidic potassium permanganate solution; the mass percentage concentration of the acidic potassium permanganate solution is 0.1 percent, and the pH value of the acidic solution is 3.
(III) surface activation: carrying out surface activation treatment on the copper alloy subjected to oxidation treatment by using an activating agent; the activating agent in the surface activation treatment is ethylenediamine, the treatment method is soaking, the mass percentage concentration of the activating agent is 2%, the soaking temperature is 60 ℃, and the soaking time is 5 min.
(IV) carrying out corrosion resistance treatment on the copper alloy; putting the copper alloy material into a polar solvent containing a corrosion inhibitor, and carrying out a sealing reaction in a pressure-resistant container; the temperature of the sealing reaction is 150 ℃, and the time of the sealing reaction is 50 h; formic acid radicals are adsorbed on the surface of the copper alloy.
And (V) cleaning the copper alloy material subjected to corrosion resistance treatment by using a solvent, and drying to obtain the corrosion-resistant copper alloy.
Example two:
in the first embodiment, the following steps are added:
the oxidizing environment in the oxidation treatment in the second step is an alkaline solution of a strong oxidant, and the alkaline solution is an alkaline hydrogen peroxide solution; a corrosion-resistant copper alloy surface treatment method comprises the following steps:
cleaning the surface of the copper alloy;
(1) removing organic matters of the copper alloy material;
(2) washing the copper alloy material with flowing water;
(3) degreasing treatment; firstly, adopting sand blasting abrasive cloth to polish, coarsen and degrease, and using absorbent cotton to wet a solvent A for wiping, wherein the solvent A comprises the following components in parts by weight: sodium carbonate 10 and sodium silicate 10, after removing oil stain, wiping with clean cotton cloth for 2 times;
(4) chemical treatment: soaking in solution B at 30 deg.C for 3min, washing with water, and drying at 60 deg.C;
(5) washing the copper alloy material with water; the water-washed copper alloy material is washed by a solvent, and the solvent is selected from one of ethanol and water; the washing time is 20 min;
(6) and drying the copper alloy material.
(II) oxidation treatment: carrying out chemical oxidation on the copper alloy subjected to pretreatment in an oxidizing environment; the oxidizing environment in the oxidation treatment is alkaline hydrogen peroxide solution of strong oxidant, the mass percentage concentration of the alkaline hydrogen peroxide solution is 0.1%, and the pH value of the acidic solution is 3.
(III) surface activation: carrying out surface activation treatment on the copper alloy subjected to oxidation treatment by using an activating agent; the activating agent in the surface activation treatment is ethylenediamine, the treatment method is soaking, the mass percentage concentration of the activating agent is 2%, the soaking temperature is 60 ℃, and the soaking time is 5 min.
(IV) carrying out corrosion resistance treatment on the copper alloy; putting the copper alloy material into a polar solvent containing a corrosion inhibitor, and carrying out a sealing reaction in a pressure-resistant container; the temperature of the sealing reaction is 150 ℃, and the time of the sealing reaction is 50 h; formic acid radicals are adsorbed on the surface of the copper alloy.
And (V) cleaning the copper alloy material subjected to corrosion resistance treatment by using a solvent, and drying to obtain the corrosion-resistant copper alloy.
Example three:
in the second embodiment, the following steps are added:
the activating agent in the surface activation treatment is hydrazine hydrate; a corrosion-resistant copper alloy surface treatment method comprises the following steps:
cleaning the surface of the copper alloy;
(1) removing organic matters of the copper alloy material;
(2) washing the copper alloy material with flowing water;
(3) degreasing treatment; firstly, adopting sand blasting abrasive cloth to polish, coarsen and degrease, and using absorbent cotton to wet a solvent A for wiping, wherein the solvent A comprises the following components in parts by weight: sodium carbonate 10 and sodium silicate 10, after removing oil stain, wiping with clean cotton cloth for 2 times;
(4) chemical treatment: soaking in solution B at 30 deg.C for 1-3min, washing with water, and drying at 60 deg.C;
(5) washing the copper alloy material with water; the water-washed copper alloy material is washed by a solvent, and the solvent is selected from one of ethanol and water; the washing time is 20 min;
(6) and drying the copper alloy material.
(II) oxidation treatment: carrying out chemical oxidation on the copper alloy subjected to pretreatment in an oxidizing environment; the oxidizing environment in the oxidation treatment is alkaline hydrogen peroxide solution of strong oxidant, the mass percentage concentration of the alkaline hydrogen peroxide solution is 0.1%, and the pH value of the acidic solution is 3.
(III) surface activation: carrying out surface activation treatment on the copper alloy subjected to oxidation treatment by using an activating agent; the activating agent in the surface activation treatment is ethylenediamine, the treatment method is soaking, the mass percentage concentration of the activating agent is 2%, the soaking temperature is 60 ℃, and the soaking time is 5 min.
(IV) carrying out corrosion resistance treatment on the copper alloy; putting the copper alloy material into a polar solvent containing a corrosion inhibitor, and carrying out a sealing reaction in a pressure-resistant container; the temperature of the sealing reaction is 150 ℃, and the time of the sealing reaction is 50 h; formic acid radicals are adsorbed on the surface of the copper alloy.
And (V) cleaning the copper alloy material subjected to corrosion resistance treatment by using a solvent, and drying to obtain the corrosion-resistant copper alloy.
Example four:
in the third embodiment, the following steps are added:
the temperature of the sealing reaction in the fifth step is 300 ℃, and the time of the sealing reaction is 100 hours; a corrosion-resistant copper alloy surface treatment method comprises the following steps:
cleaning the surface of the copper alloy;
(1) removing organic matters of the copper alloy material;
(2) washing the copper alloy material with flowing water;
(3) degreasing treatment; firstly, adopting sand blasting abrasive cloth to polish, coarsen and degrease, and using absorbent cotton to wet a solvent A for wiping, wherein the solvent A comprises the following components in parts by weight: sodium carbonate 10 and sodium silicate 10, after removing oil stain, wiping with clean cotton cloth for 2 times;
(4) chemical treatment: soaking in solution B at 30 deg.C for 1-3min, washing with water, and drying at 60 deg.C;
(5) washing the copper alloy material with water; the water-washed copper alloy material is washed by a solvent, and the solvent is selected from one of ethanol and water; the washing time is 20 min;
(6) and drying the copper alloy material.
(II) oxidation treatment: carrying out chemical oxidation on the copper alloy subjected to pretreatment in an oxidizing environment; the oxidizing environment in the oxidation treatment is alkaline hydrogen peroxide solution of strong oxidant, the mass percentage concentration of the alkaline hydrogen peroxide solution is 0.1%, and the pH value of the acidic solution is 3.
(III) surface activation: carrying out surface activation treatment on the copper alloy subjected to oxidation treatment by using an activating agent; the activating agent in the surface activation treatment is ethylenediamine, the treatment method is soaking, the mass percentage concentration of the activating agent is 2%, the soaking temperature is 60 ℃, and the soaking time is 5 min.
(IV) carrying out corrosion resistance treatment on the copper alloy; putting the copper alloy material into a polar solvent containing a corrosion inhibitor, and carrying out a sealing reaction in a pressure-resistant container; the temperature of the sealing reaction is 300 ℃, and the time of the sealing reaction is 100 h; formic acid radicals are adsorbed on the surface of the copper alloy.
And (V) cleaning the copper alloy material subjected to corrosion resistance treatment by using a solvent, and drying to obtain the corrosion-resistant copper alloy.
Example five:
in the fourth example, the following steps were added:
the water-washed copper alloy material is washed by a solvent, and the solvent is water; a corrosion-resistant copper alloy surface treatment method comprises the following steps:
cleaning the surface of the copper alloy;
(1) removing organic matters of the copper alloy material;
(2) washing the copper alloy material with flowing water;
(3) degreasing treatment; firstly, adopting sand blasting abrasive cloth to polish, coarsen and degrease, and using absorbent cotton to wet a solvent A for wiping, wherein the solvent A comprises the following components in parts by weight: sodium carbonate 10 and sodium silicate 10, after removing oil stain, wiping with clean cotton cloth for 2 times;
(4) chemical treatment: soaking in solution B at 30 deg.C for 1-3min, washing with water, and drying at 60 deg.C;
(5) washing the copper alloy material with water; the water-washed copper alloy material is washed by a solvent, and the solvent is selected from one of ethanol and water; the washing time is 20 min;
(6) and drying the copper alloy material.
(II) oxidation treatment: carrying out chemical oxidation on the copper alloy subjected to pretreatment in an oxidizing environment; the oxidizing environment in the oxidation treatment is alkaline hydrogen peroxide solution of strong oxidant, the mass percentage concentration of the alkaline hydrogen peroxide solution is 0.1%, and the pH value of the acidic solution is 3.
(III) surface activation: carrying out surface activation treatment on the copper alloy subjected to oxidation treatment by using an activating agent; the activating agent in the surface activation treatment is ethylenediamine, the treatment method is soaking, the mass percentage concentration of the activating agent is 2%, the soaking temperature is 60 ℃, and the soaking time is 5 min.
(IV) carrying out corrosion resistance treatment on the copper alloy; putting the copper alloy material into a polar solvent containing a corrosion inhibitor, and carrying out a sealing reaction in a pressure-resistant container; the temperature of the sealing reaction is 300 ℃, and the time of the sealing reaction is 100 h; formic acid radicals are adsorbed on the surface of the copper alloy.
And (V) cleaning the copper alloy material subjected to corrosion resistance treatment by using a solvent, and drying to obtain the corrosion-resistant copper alloy.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A corrosion-resistant copper alloy surface treatment method is characterized by comprising the following steps: the method comprises the following steps:
cleaning the surface of the copper alloy;
(1) removing organic matters of the copper alloy material;
(2) washing the copper alloy material with flowing water;
(3) degreasing treatment; firstly, sand blasting or abrasive cloth is adopted for polishing and coarsening, then degreasing is carried out, absorbent cotton is used for wiping with a wetting solvent A, after oil stain is removed, the cotton cloth is used for wiping for 2-4 times;
(4) chemical treatment: soaking in solution B at 25-30 deg.C for 1-3min, washing with water, and drying at 50-60 deg.C;
(5) washing the copper alloy material with water;
(6) and drying the copper alloy material.
(II) oxidation treatment: and chemically oxidizing the pretreated copper alloy in an oxidizing environment.
(III) surface activation: the copper alloy subjected to the oxidation treatment is subjected to surface activation treatment with an activating agent.
(IV) carrying out corrosion resistance treatment on the copper alloy; the copper alloy material is put into a polar solvent containing a corrosion inhibitor, and sealed and reacted in a pressure-resistant container.
And (V) cleaning the copper alloy material subjected to corrosion resistance treatment by using a solvent, and drying to obtain the corrosion-resistant copper alloy.
2. The method of claim 1, wherein the step of applying the corrosion-resistant copper alloy surface treatment comprises: the oxidizing environment in the oxidation treatment in the second step is an acidic solution of a strong oxidant or an alkaline solution of the strong oxidant, and the acidic solution of the strong oxidant comprises one or more of an acidic potassium permanganate solution, an acidic potassium chlorate solution, an acidic hydrogen peroxide solution and an acidic sodium hypochlorite solution; the alkaline solution of the strong oxidant comprises one or more of an alkaline potassium chlorate solution, an alkaline hydrogen peroxide solution, an alkaline sodium hypochlorite solution and an alkaline potassium dichromate solution.
3. The method of claim 2, wherein the step of applying the corrosion-resistant copper alloy surface treatment comprises: the mass percentage concentration of the oxidant in the strong oxidant acidic solution is 0.1-5%, and the pH value of the acidic solution is 0-3; the mass percentage concentration of the oxidant in the alkaline solution of the strong oxidant is 0.1-5%, and the pH value of the alkaline solution is 11-14; the chemical oxidation method comprises the step of soaking the aluminum alloy in the oxidizing environment at the temperature of 20-80 ℃ for 5s-20 min.
4. The method of claim 1, wherein the step of applying the corrosion-resistant copper alloy surface treatment comprises: removing the organic solvent of the copper alloy material in the first step to remove the organic matter of the copper alloy material, wherein the solvent is selected from ethanol; the time for removing the organic matters in the copper alloy material is 15-100 min.
5. The method of claim 1, wherein the step of applying the corrosion-resistant copper alloy surface treatment comprises: the solvent A in the first step comprises the following components in parts by weight: 10-20 parts of sodium carbonate and 10-20 parts of sodium silicate, wherein the solution B comprises 14.5-18 parts of ferric trichloride, 21-31 parts of concentrated nitric acid and 150-200 parts of water.
6. The method of claim 1, wherein the step of applying the corrosion-resistant copper alloy surface treatment comprises: the activating agent in the surface activation treatment is ethylenediamine or hydrazine hydrate, the treatment method is soaking, the mass percentage concentration of the activating agent is 2-6%, the soaking temperature is 40-60 ℃, and the soaking time is 1-10 min.
7. The method of claim 1, wherein the step of applying the corrosion-resistant copper alloy surface treatment comprises: the water-washed copper alloy material is washed by a solvent, and the solvent is selected from one of ethanol and water; the washing time is 5-100 min.
8. The method of claim 1, wherein the step of applying the corrosion-resistant copper alloy surface treatment comprises: the temperature of the sealing reaction in the fifth step is 20-300 ℃, and the time of the sealing reaction is 0.01-100 h; at least one layer of formate is adsorbed on the surface of the copper alloy.
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| CN112680692A (en) * | 2020-12-21 | 2021-04-20 | 米巴精密零部件（中国）有限公司 | Method for improving resistance of copper alloy to active sulfur corrosion |
| CN114277383A (en) * | 2021-12-24 | 2022-04-05 | 南通恒昌通讯设备有限公司 | Corrosion-resistant copper alloy surface treatment method |
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| CN102453891A (en) * | 2010-10-18 | 2012-05-16 | 王振宇 | Surface treatment method of copper and copper alloy having strong corrosion resistance |
| CN104985750A (en) * | 2015-07-30 | 2015-10-21 | 广州辰东新材料有限公司 | Aluminum alloy surface treatment method for metal-plastic composite injection molding |
| CN105441918A (en) * | 2015-10-26 | 2016-03-30 | 安徽长安专用汽车制造有限公司 | Automobile copper alloy passivation process |
| CN107475700A (en) * | 2017-08-28 | 2017-12-15 | 厦门大学 | A kind of corrosion resistant copper alloy surface processing method |
| CN107475723A (en) * | 2017-08-28 | 2017-12-15 | 厦门大学 | A kind of preparation method of corrosion-resistant copper electric wire |
| WO2019042159A1 (en) * | 2017-08-28 | 2019-03-07 | 厦门大学 | Anticorrosion treatment method for copper-containing material |
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| CN112680692A (en) * | 2020-12-21 | 2021-04-20 | 米巴精密零部件（中国）有限公司 | Method for improving resistance of copper alloy to active sulfur corrosion |
| CN114277383A (en) * | 2021-12-24 | 2022-04-05 | 南通恒昌通讯设备有限公司 | Corrosion-resistant copper alloy surface treatment method |
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