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A kind of corrosion-resistant copper alloy surface treatment method

A surface treatment, copper alloy technology, applied in the direction of metal material coating process, etc., can solve the problems of expensive equipment, complex process, insufficient film protection ability, etc., to achieve the effect of reducing risk, reliability, beauty, and high reliability

Active Publication Date: 2019-11-01
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, aiming at the shortcomings of the current copper alloy surface treatment method or insufficient film protection ability, or the defects of expensive equipment and complex process, to provide the corrosion resistance treatment on the copper alloy surface, which can significantly improve Corrosion resistance of copper alloys, especially a corrosion-resistant copper alloy surface treatment method for salt-alkali resistance

Method used

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  • A kind of corrosion-resistant copper alloy surface treatment method
  • A kind of corrosion-resistant copper alloy surface treatment method
  • A kind of corrosion-resistant copper alloy surface treatment method

Examples

Experimental program
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Effect test

Embodiment 1

[0034] A corrosion-resistant copper alloy and a surface treatment method thereof, comprising the following steps:

[0035] Step 1: Surface cleaning.

[0036] (1) Take a piece of brass foil with a length of 8cm and a width of 2.5cm, and remove organic matter with a solvent of ethanol for 15 minutes;

[0037] (2) Cleaning with running water;

[0038] (3) To remove the oxide film, use analytically pure acetone, and the duration is: 5min;

[0039] (4) washing with water, using solvents: ethanol and water, and the duration is: 5min;

[0040] (5) drying;

[0041] Step 2: Anti-corrosion treatment. The corrosion inhibitor used is sodium formate 16g / L, the polar solvent is N,N-dimethylformamide 0.940g / mL, and the reaction is sealed in a pressure vessel at a temperature of 150°C for 18 hours;

[0042] Step 3: Wash with water and dry.

[0043] Put untreated brass foil into 0.1M NaOH solution, temperature: 60°C, duration: 24h for alkali resistance test, the photo of the result is f...

Embodiment 2

[0049] A corrosion-resistant copper alloy and a surface treatment method thereof, comprising the following steps:

[0050] Step 1: Surface cleaning.

[0051] (1) Take a copper-nickel faucet casting, remove organic matter, use solvent: ethanol, and the duration is: 18min;

[0052] (2) Cleaning with running water;

[0053] (3) Remove the oxide film, using analytically pure acetone, the duration is: 8min;

[0054] (4) washing with water, using solvents: ethanol and water, and the duration is: 8min;

[0055] (5) drying;

[0056] Step 2: Anti-corrosion treatment. The corrosion inhibitor used is lithium formate 17g / L, the polar solvent is formamide 0.942g / mL, and the reaction is sealed in a pressure-resistant container at a temperature of 160°C and a duration of 19h;

[0057] Step 3: Wash with ethanol and dry.

Embodiment 3

[0059] A corrosion-resistant copper alloy and a surface treatment method thereof, comprising the following steps:

[0060] Step 1: Surface cleaning.

[0061] (1) Take a brass gasket, remove organic matter, use solvent: ethanol, and the duration is: 20min;

[0062] (2) Cleaning with running water;

[0063] (3) To remove the oxide film, use analytical pure acetone, and the duration is: 10min;

[0064] (4) washing with water, using solvents: ethanol and water, and the duration is: 10min;

[0065] (5) drying;

[0066] Step 2: Anti-corrosion treatment. The corrosion inhibitor used is potassium formate 18g / L, the polar solvent is diethylformamide 0.945g / mL, and the reaction is sealed in a pressure-resistant container at a temperature of 170°C and a duration of 20h;

[0067] Step 3: Wash with water and dry.

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Abstract

The invention provides a corrosion-resistant copper alloy surface treatment method, and relates to a metal anti-corrosion material. According to the corrosion-resistant copper alloy surface treatment method, after corrosion-resistant treatment is conducted on the surface of a copper alloy, the corrosion resistance, especially corrosion resistance of the salt tolerating ability of the copper alloy can be improved significantly. The corrosion-resistant copper alloy surface treatment method comprises the steps that washing of the surface of the copper alloy is conducted; corrosion-resistant treatment of the copper alloy is conducted; corrosion-resistant treated copper alloy material is washed by using solvent, drying is conducted the corrosion-resistant copper alloy is obtained. Formate has a good protective effect on the copper alloy, corrosion of a copper alloy matrix is inhibited effectively, the service life is prolonged, the risks brought by corrosion are reduced, and the environment-friendly effect is achieved; compared with an unmodified copper alloy, gloss of the copper alloy modified by the formate is maintained; the corrosion-resistant copper alloy surface has the advantages of being good in stability, high in reliability and attractive in appearance; and the preparing process is simple, market competitiveness is high, the corrosion-resistant copper alloy surface treatment method is suitable for large-scale producing, and industrialization is easy to achieve.

Description

technical field [0001] The invention relates to metal anti-corrosion materials, in particular to a corrosion-resistant copper alloy surface treatment method which can significantly improve the corrosion resistance of the copper alloy, especially the saline-alkali resistance, after the copper alloy surface is subjected to corrosion-resistant treatment. Background technique [0002] Copper alloy has many valuable physical and chemical properties, such as high thermal conductivity and electrical conductivity, strong chemical stability, high tensile strength, easy welding, good corrosion resistance, excellent plasticity and ductility. As an important basic material and functional material, it has been widely used in the development of the national economy. In my country, it is the second largest non-ferrous metal in consumption after aluminum alloy. However, copper alloys have poor corrosion resistance, especially in alkaline conditions or high-temperature and high-oxygen enviro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/02C23C22/52C23C22/68C23C22/78
CPCC23C22/02C23C22/52C23C22/68C23C22/78
Inventor 郑南峰郝树强彭健吴炳辉方晓亮
Owner XIAMEN UNIV
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