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A kind of ni-co/cu superhydrophobic coating and preparation method thereof

A super-hydrophobic, ni-co technology, applied in the field of electrodeposition composite coating, can solve the problems of limited improvement of anti-corrosion life, and achieve the effect of prolonging the protection life, improving the protection effect and improving the anti-corrosion effect

Active Publication Date: 2021-08-10
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These coatings can better improve the hardness and wear resistance of the Ni-Co coating, but the improvement of the anti-corrosion life is limited.

Method used

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  • A kind of ni-co/cu superhydrophobic coating and preparation method thereof
  • A kind of ni-co/cu superhydrophobic coating and preparation method thereof
  • A kind of ni-co/cu superhydrophobic coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A kind of Ni-Co / Cu superhydrophobic coating of the present invention, its preparation method comprises steps as follows:

[0040] 1. The base material is Q235 carbon steel, which is cut and encapsulated with epoxy resin so that the working area is 1 cm 2 , the substrate was polished with 2000# sandpaper to remove surface corrosion products, then cleaned with acetone and ethanol, and dried for later use.

[0041] 2. Configuration of Ni-Co plating solution: weigh 20 g NiSO 4 ·6H 2 O, 5 g CoSO 4 ·7H 2 O and 3 g NiCl 2 ·6H 2 O was put into a 200 mL beaker, then 100 mL of deionized water was added, and stirred thoroughly to dissolve. Weigh 3 g H 3 BO 3 , put into a 50 mL beaker, add 25 mL deionized water, heat until boiling, and maintain for 4 min. Finally H 3 BO 3 The solution was slowly added dropwise to the main salt solution.

[0042] 3. Configuration of Cu plating solution: Weigh CuCl 2 2H 2 O 5 g, add 100 mL deionized water, fully stir to dissolve, then w...

Embodiment 2

[0049] A kind of Ni-Co / Cu superhydrophobic coating of the present invention, its preparation method comprises steps as follows:

[0050] 1. The base material is Q255 carbon steel, which is cut and encapsulated with epoxy resin so that the working area is 1 cm2. The base is polished with 2000# sandpaper to remove surface corrosion products, then cleaned with acetone and ethanol, and dried for later use.

[0051] 2. Configuration of Ni-Co plating solution: weigh 10 g NiSO 4 ·6H 2 O, 2 g CoSO 4 ·7H 2 O and 1 g NiCl 2 ·6H 2 O was put into a 200 mL beaker, then 100 mL of deionized water was added, and stirred thoroughly to dissolve. Weigh 1 g H 3 BO 3 , put into a 50 mL beaker, add 25 mL deionized water, heat until boiling, and maintain for 3 min. Finally H 3 BO 3 The solution was slowly added dropwise to the main salt solution.

[0052] 3. Configuration of Cu plating solution: Weigh CuCl 2 2H 2 O 3 g, add 100 mL deionized water, fully stir to dissolve, then weigh 2 g ...

Embodiment 3

[0058] A kind of Ni-Co / Cu superhydrophobic coating of the present invention, its preparation method comprises steps as follows:

[0059] 1. The base material is Q275 carbon steel, which is cut and encapsulated with epoxy resin so that the working area is 1 cm2. The base is polished with 2000# sandpaper to remove surface corrosion products, then cleaned with acetone and ethanol, and dried for later use.

[0060] 2. Configuration of Ni-Co plating solution: weigh 15 g NiSO 4 ·6H 2 O, 4 g CoSO 4 ·7H 2 O and 2 g NiCl 2 ·6H 2 O was put into a 200 mL beaker, then 100 mL of deionized water was added, and stirred thoroughly to dissolve. Weigh 4 g H 3 BO 3 , put into a 50 mL beaker, add 25 mL deionized water, heat until boiling, and maintain for 4 min. Finally H 3 BO 3 The solution was slowly added dropwise to the main salt solution.

[0061] 3. Configuration of Cu plating solution: Weigh CuCl 2 2H 2 O 4 g, add 100 mL deionized water, fully stir to dissolve, then weigh 7g N...

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Abstract

The invention provides a Ni-Co / Cu super-hydrophobic coating and a preparation method thereof, belonging to the field of electrodeposited composite coatings. The coating comprises a metal substrate, a Ni-Co coating coated on the surface of the metal substrate, a copper coating coated on the surface of the Ni-Co coating, and after the copper coating is oxidized into a dendritic structure, a low surface energy substance is modified on the surface. The preparation method is as follows: first prepare a nickel-cobalt coating on the surface of the metal substrate; then carry out surface treatment on the nickel-cobalt coating, then coat a layer of copper coating on the surface, put the composite coating into the prepared oxidizing solution, and soak for a certain period of time. After taking it out, blow it dry with cold air; finally carry out low surface energy modification to obtain Ni‑Co / Cu composite coating. The invention can effectively improve the protective effect of the Ni-Co coating. When the corrosive medium such as water reaches the surface of the coating, due to the existence of the surface hydrophobic layer, it is difficult for the corrosive medium to enter the interior of the coating, thereby improving the anti-corrosion effect of the coating and prolonging the protection of the coating. It provides a new idea for the preparation of new metal composite coatings.

Description

technical field [0001] The invention relates to the field of electrodeposited composite coatings, in particular to a method for preparing and applying a Ni-Co / Cu super-hydrophobic coating. Background technique [0002] Metal and its alloy coating / plating have good physical, chemical and mechanical properties, such as high hardness, wear resistance and corrosion resistance, so they are widely used in the surface treatment of steel. Nickel-cobalt (Ni-Co) alloy coating has high corrosion resistance, hardness and good wear resistance, and is widely used in electronic and optoelectronic devices, chemical industry and other fields. [0003] However, when the nickel-cobalt coating is applied to harsh environments such as the marine environment, it is easy to lose its protective performance. Therefore, improving the protection life of nickel-cobalt coatings is one of the hotspots of current research. If some researchers add other elements to the plating solution to prepare ternary...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/56C25D3/38C25D5/12C25D5/48
CPCC25D3/38C25D3/562C25D5/12C25D5/48
Inventor 林志峰张伟许立坤
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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