Preparation method of metal-graphene composite coating

A graphene composite and graphene powder technology, applied in metal material coating process, coating, melt spraying and other directions, can solve the problem of no precedent for metal-graphene composite coating research, and achieve strong plasticity and good bonding. , the effect of improving liquidity

Active Publication Date: 2018-09-07
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no research precedent for the preparation of metal-graphene composite coatings by flame spraying method

Method used

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  • Preparation method of metal-graphene composite coating
  • Preparation method of metal-graphene composite coating
  • Preparation method of metal-graphene composite coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] In this embodiment, the base material is selected as a Q235 steel sheet with a thickness of about 2mm, according to figure 1 Shown preparation flowchart, prepares aluminum-graphene composite coating, and its specific preparation method is as follows:

[0042] 1. First, add metal aluminum powder with an average particle size of 54um and reduced graphene oxide powder with an average particle size of 5um into a stainless steel ball mill tank, wherein the mass of graphene powder accounts for 0.3% of the total weight of metal powder and graphene powder , and add 2% stearic acid as a process control agent, fill with argon as a protective gas. The ratio of ball to material in the ball mill tank is 15:1, and The proportion of stainless steel grinding balls is 2:1, the ball milling time is 2 hours, and the rotation speed is 200rpm. After the ball milling is completed, the aluminum-graphene composite particles can be collected;

[0043] 2. Wash the substrate several times w...

Embodiment 2

[0051] In this embodiment, the base material is selected as a Q235 steel sheet with a thickness of about 2mm, according to figure 1 Shown preparation flowchart, prepares aluminum-graphene composite coating, and its specific preparation method is as follows:

[0052] 1. First, add metal aluminum powder with an average particle size of 75um and reduced graphene oxide powder with an average particle size of 50um into a stainless steel ball mill tank, wherein the mass of the graphene powder accounts for 1% of the total weight of the metal powder and the graphene powder , and add 2% stearic acid as a process control agent, fill with argon as a protective gas. The ball-to-material ratio in the ball mill tank is 9:1, and The proportion of stainless steel grinding balls is 3:1, the ball milling time is 2 hours, and the rotation speed is 250rpm. After the ball milling is completed, the aluminum-graphene composite particles can be collected;

[0053] 2. Wash the substrate several ...

Embodiment 3

[0060] In this embodiment, the base material is selected as a Q235 steel sheet with a thickness of about 2mm, according to figure 1 Shown preparation flowchart, prepares aluminum-graphene composite coating, and its specific preparation method is as follows:

[0061] 1. First, add metal aluminum powder with an average particle size of 45um and reduced graphene oxide powder with an average particle size of 25um into a stainless steel ball mill tank, wherein the mass of the graphene powder accounts for 0.5% of the total weight of the metal powder and the graphene powder , and add 1% stearic acid as a process control agent, fill with argon as a protective gas. The ball-to-material ratio in the ball mill tank is 12:1, and The proportion of stainless steel grinding balls is 2:1, the ball milling time is 3 hours, and the rotation speed is 300rpm. After the ball milling is completed, the aluminum-graphene composite particles can be collected;

[0062] 2. Wash the substrate sever...

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Abstract

The invention discloses a preparation method of a metal-graphene composite coating. The preparation method comprises steps as follows: firstly, metal-graphene composite particles are prepared; a matrix is subjected to surface treatment, and the composite coating is prepared on the surface of the matrix with a thermal spraying technology. The preparation method of the metal-graphene composite coating is simple to operate, low in cost, high in efficiency and suitable for industrial production. The prepared metal-graphene composite coating has a compact structure, has good bonding property with the matrix, has the thickness of 10 mu m-10 mm and has corrosion resistance, friction resistance, high mechanical strength, anti-bacterial property and biological stain and damage prevention property.The metal-graphene composite coating has good application prospects and economic benefits in the fields of friction resistance, corrosion resistance and biological stain and damage prevention.

Description

technical field [0001] The invention belongs to the technical field of composite coating preparation, and in particular relates to a method for preparing a metal-graphene composite coating. Background technique [0002] Seawater is a strong dielectric solution, coupled with the combined effects of multiple corrosive environments such as freeze-thaw, sea fog, typhoon, heavy rain, and industrial emissions, resulting in marine corrosion. According to the survey, the economic loss caused by marine corrosion and pollution in my country accounts for about 4% of the gross national product. Therefore, for the marine steel structure and shipbuilding industry, how to use new technology to improve the performance of marine engineering equipment, how to reduce the erosion of seawater on steel structures and hulls, and how to reduce biofouling caused by marine organisms are urgently needed by the industry. solved problem. [0003] At present, the surface of marine engineering equipment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/129C23C4/06
CPCC23C4/06C23C4/129
Inventor 所新坤徐玉婷黄晶刘奕龚永峰周平李华
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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