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Anti-corrosion method of cupronickel B30

An anti-corrosion and cupronickel technology, applied in the coating process of metal materials, etc., can solve the problems of complex operation, long processing time, expensive metal hydrophobic surface equipment and medicines, etc., and achieve simple process, short processing time and broad practical value Effect

Inactive Publication Date: 2011-04-06
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the preparation method of metal hydrophobic surface has disadvantages such as expensive equipment and medicine, long processing time, complicated operation, etc.

Method used

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  • Anti-corrosion method of cupronickel B30

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Embodiment Construction

[0023] The present invention is further elaborated below by embodiment and accompanying drawing: a kind of anticorrosion method of cupronickel B30 comprises the following steps:

[0024] (1) The configuration concentration is 3 to 10% H 2 o 2 water solution and 0.05-2% stearic acid ethanol solution, the cleaned and treated white copper B30 is immersed in 3-10% H2O2 aqueous solution for 15-60 minutes and 0.05-2% stearic acid ethanol solution for 10-60 minutes, on the copper base Obtain a hydrophobic and corrosion-resistant surface on the material;

[0025] (2) The white copper B30 treated by the above steps and Na with a concentration of 0.02-0.2g / L 2 WO 4 Corrosion inhibitor compound use.

[0026] A more optimized anti-corrosion method for cupronickel B30, comprising the following steps:

[0027] (1) Clean the cleaned copper-nickel B30 at a concentration of 5% H 2 o 2 Soak in the solution for 30 minutes, and then soak in stearic acid ethanol solution with a concentratio...

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Abstract

The invention discloses an anti-corrosion method of cupronickel B30, comprising the following steps of: soaking the cleaned cupronickel B30 in a H2O2 solution with the concentration of 5 percent for 30 minutes; then soaking in a stearic acid alcohol solution with the concentration of 0.1 mol / L for 30 minutes; and acquiring an anti-corrosion surface with hydrophobicity on a copper base material, wherein the cupronickel B30 treated through the steps and a Na2WO4 corrosion inhibitor with the concentration of 0.1 g / L are compositely used. Electrochemical tests indicate that the cupronickel B30 subjected to hydrophobic treatment is greatly increased in polarization resistance and reduced in corrosion current in the Na2WO4 corrosion inhibitor with the concentration of 0.1 g / L and can reach the corrosion inhibition efficiency at 88.85 percent and obviously enhance the corrosion resistance; and in addition, the invention has the advantages of low cost without expensive equipment and drugs, simple process, short processing time, safety, reliability and environment protection without pollution.

Description

technical field [0001] The invention relates to the technical field of metal material corrosion and protection, and more specifically relates to a method for preventing corrosion of white copper B30. Background technique [0002] The construction of hydrophobic surfaces on metal substrates is an emerging field of surface protection technology in recent years. Because of its excellent performance and process performance, cupronickel B30 is widely used in condenser tubes of various ships, piping systems of seawater desalination treatment equipment and heat exchangers of coastal power plants, etc. However, due to the high surface energy of copper, water molecules are easy to adsorb and gather. In different application environments, corrosion will occur to varying degrees with the extension of time, which will bring serious economic losses to production and life. Prepare a layer on the surface with hydrophobic properties. The protective film is a simple and effective way to pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/52C23C22/40C23C22/02
Inventor 徐群杰蔡希宏时士峰云虹
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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