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Method for in-situ growth of graphene on metal surface based on laser and application of method

An in-situ growth and metal surface technology, applied in metal material coating process, gaseous chemical plating, coating, etc., can solve the problems of inability to provide long-term corrosion resistance, reduce economic losses and the incidence of safety accidents, Effects of reduced processing costs, excellent mechanical properties, and corrosion-resistant friction characteristics

Pending Publication Date: 2020-09-04
SHAANXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for in-situ growth of graphene on the metal surface based on laser and its application in view of the deficiencies in the above-mentioned prior art. , the problem of not being able to provide long-term corrosion resistance, reducing the corrosion and mechanical wear of metal materials caused by seawater, humid air, pH and physical friction during service, improving the performance of metal parts and other equipment and facilities involving metal materials service life, and finally achieve the purpose of reducing loss and improving the service life and safety of metal devices and equipment

Method used

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  • Method for in-situ growth of graphene on metal surface based on laser and application of method
  • Method for in-situ growth of graphene on metal surface based on laser and application of method
  • Method for in-situ growth of graphene on metal surface based on laser and application of method

Examples

Experimental program
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Effect test

Embodiment 1

[0047] The Ni / Fe alloy transition layer was prepared on 45# steel with a fiber laser with a maximum power of 2000W, and graphene was prepared in situ on the surface of the Ni / Fe alloy transition layer with a fiber laser with a maximum power of 2000W.

[0048] The preparation steps are as follows:

[0049] (1) Fiber laser preparation of nickel alloy layer

[0050] The surface of 45# steel is irradiated with fiber laser, the powder feeding rate is 5g / min beside the axis, and the particle size of nickel powder is 30μm.

[0051] The laser alloying process parameters are: the laser spot diameter is 0.5mm, the laser power is 1500W, the width of each scanning track is 1mm, and the scanning speed is 10mm / s.

[0052] In order to achieve the full coverage of the surface, the overlapping scanning method is adopted. The second pass and the first pass have a certain overlap, and the overlap rate is 30%. Reciprocating in this way, a large-area Ni / Fe alloy coating is formed, and its XRD pat...

Embodiment 2

[0057] Using a semiconductor laser with a maximum power of 6000W to prepare a Ni / Al alloy transition layer on 6063 aluminum alloy, and then using a semiconductor laser with a maximum power of 6000W to prepare graphene in situ on the surface of the Ni / Al alloy transition layer.

[0058] The preparation steps are as follows:

[0059] (1) Nickel alloy layer prepared by semiconductor laser

[0060] The semiconductor laser was used to irradiate the surface of 6063 aluminum alloy, the feed rate of the side-axis was 10g / min, and the particle size of the nickel powder was 100μm.

[0061] The laser alloying process parameters are: the laser spot diameter is 3mm, the laser power is 5500W, the width of each scanning track is 3mm, and the scanning speed is 50mm / s.

[0062] In order to achieve the full coverage of the surface, the overlapping scanning method is adopted, and the second layer has a certain overlap with the first layer, and the overlap rate is 50%. Reciprocating in this way,...

Embodiment 3

[0067] Using a semiconductor laser with a maximum power of 4000W to prepare a Ni / Ti alloy transition layer on Ti6Al4V titanium alloy, and then using a semiconductor laser with a maximum power of 4000W to prepare graphene in situ on the surface of the Ni / Ti alloy transition layer.

[0068] The preparation steps are as follows:

[0069] (1) Nickel alloy layer prepared by semiconductor laser

[0070] The surface of the Ti6Al4V titanium alloy was irradiated with a semiconductor laser, and the speed of the side-axis powder feeding was 5g / min, and the particle size of the nickel powder was 50μm.

[0071] The laser alloying process parameters are: the laser spot diameter is 2mm, the laser power is 3000W, the width of each scanning track is 2mm, and the scanning speed is 20mm / s.

[0072] In order to achieve full coverage of the surface, the overlapping scanning method is adopted, and the second layer has a certain overlap with the first layer, and the overlap rate is 20%. Reciprocati...

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Abstract

The invention discloses a method for in-situ growth of graphene on a metal surface based on laser and application of the method. Powdery metallic nickel is introduced to a metal substrate through a laser, and an alloy coating of the metallic nickel and the metal substrate is formed in a lap joint scanning mode; a solid carbon source is pre-coated on the alloy coating, and in-situ growth of graphene is achieved through laser irradiation. According to the method, the excellent mechanical property and corrosion and friction resistance of graphene are fully exerted, so that the metal material is high in mechanical property, corrosion resistance and friction resistance at the same time, and finally the purposes of reducing the machining cost and prolonging the service life of a metal workpieceand equipment are achieved.

Description

technical field [0001] The invention belongs to the technical field of metal protection, and in particular relates to a laser-based method for in-situ growth of graphene on a metal surface and its application. Background technique [0002] Metal is widely used in production and life, transportation, aerospace, precision instrument and equipment manufacturing, etc., but it is also very easy to interact with the surrounding environment, including chemical reactions and electrochemical reactions, resulting in corrosion and damage to metal materials. In the daily production and living environment, humidity, sea water, acidity and alkalinity, atmospheric environment, etc. will cause corrosion of metal materials, thus affecting the actual service life of the metal. The performance and corrosion resistance of metal materials directly determine the performance, service life, reliability and safety of the components, tools, instruments, equipment, etc. manufactured by them, which in ...

Claims

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Application Information

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IPC IPC(8): C23C16/02C23C16/26C23C16/48
CPCC23C16/0281C23C16/26C23C16/483
Inventor 叶晓慧董任重羊奕帆杨艳玲锁国权冯雷侯小江张荔
Owner SHAANXI UNIV OF SCI & TECH
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