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Preparation method for graphene-reinforced monel alloy

A graphene and alloy technology, applied in the field of preparation of graphene-enhanced Monel alloy, can solve the problems of reducing material density, short service life, harsh abuse, etc., and achieve the effect of improving microstructure and improving mechanical properties

Active Publication Date: 2017-05-10
北京石墨烯技术研究院有限公司
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Problems solved by technology

For example, the difficulty of oil extraction at this stage is greater than before, the working conditions of various mechanical devices are becoming more and more severe, and the service life of various Monel alloy shafts in the working process of submersible pumps is getting shorter and shorter. At present, traditional It is difficult to improve the strength of the Monel alloy matrix by technological methods. Under this background condition, graphene with low density and high strength is used as a reinforcing material, which can reduce the density of the material while improving the strength of the Monel alloy matrix.

Method used

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Embodiment

[0027] The steps of preparing graphene reinforced Monel 400 alloy by adopting the method of the present invention are as follows:

[0028] Step 1, utilize ultrasonic disperser to prepare graphene monodisperse solution, the solvent of this solution is ethanol, NMP, polyethylene glycol or PVP that the mass percent concentration is 20%~100%, the weight of solvent is 19~191% of graphene times;

[0029] Graphene is weighed as 5g in the present embodiment, (Hummer's method preparation), solvent is the ethanol of 19 times of graphene weight, and the mass percent concentration of ethanol is 80%, and ultrasonic working time is 2h;

[0030] Step 2, adding Monel alloy powder in the graphene monodisperse solution, the addition of Monel alloy powder accounts for 95%~99.9% of the total weight of Monel alloy powder and graphene;

[0031] In this embodiment, the weight of the monel alloy powder is 1kg (monel 400 alloy powder is commercially available, and its composition meets the national s...

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Abstract

The invention provides a preparation method for a graphene-reinforced monel alloy. According to the preparation method, graphene is used as a reinforcing phase to be added into a monel alloy substrate. The preparation method comprises the steps that mixed powder of the graphene and the monel alloy or mixed powder of graphene oxide and the monel alloy is prepared; and the mixed powder is subjected to cold rolling, sintering forming and hot forging forming to obtain a monel alloy plate reinforced by the graphene. The invention provides the novel method for reinforcing the monel alloy through dispersion strengthening, and the corrosion resistance of the alloy is improved while the mechanical strength of the substrate is improved. The preparation method is simple in operation process and needed equipment, high in production efficiency, low in manufacturing cost and easy to industrialize in a large scale.

Description

technical field [0001] The invention relates to a preparation method of graphene-reinforced Monel alloy, which belongs to the technical field of preparation of composite metal materials. Background technique [0002] Graphene is a new type of two-dimensional nanomaterial. Its nanosheet is a two-dimensional material with a single atomic layer thickness composed of sp2 hybridized carbon atoms. It is the thinnest and hardest nanomaterial known in the world, with a strength as high as 1.01. Tpa is 100 times that of structural steel, but its density is 1 / 5 of that of structural steel. The thermal conductivity is as high as 5300W / m·K, which is higher than that of carbon nanotubes and diamonds. The electron mobility at room temperature exceeds 200,000cm2 / V·S, which is higher than that of carbon nanotubes or silicon crystals. The resistivity is only about 1Ω·m, which is higher than that of aluminum or silver. Lower, the material with the smallest resistivity in the world. In addit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05
CPCC22C1/0433C22C1/05
Inventor 燕绍九李秀辉赵双赞陈翔洪起虎
Owner 北京石墨烯技术研究院有限公司
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