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Preparation method of graphene-coated alloy powder composite material for 3D printing

A graphene coating and 3D printing technology, which is applied to graphene, metal processing equipment, chemical instruments and methods, etc., can solve the problems of poor dispersion and easy agglomeration of graphene, and achieve good sphericity, high coverage, and easy operation. simple effect

Active Publication Date: 2019-04-30
中航迈特增材科技(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing graphene-coated alloy powder composite materials for 3D printing, which solves the problems of easy agglomeration and poor dispersion of graphene on the metal surface

Method used

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  • Preparation method of graphene-coated alloy powder composite material for 3D printing
  • Preparation method of graphene-coated alloy powder composite material for 3D printing
  • Preparation method of graphene-coated alloy powder composite material for 3D printing

Examples

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Effect test

Embodiment 1

[0023] A preparation method of graphene alloy powder composite material for 3D printing, the specific operation steps and parameters are as follows:

[0024] For the preparation of alloy powder, the coating raw material is TC4 powder, and the alloy powder is prepared by electrode induction gas atomization (EIGA). The powder is sieved three times with an ultrasonic vibrating sieving machine to obtain TC4 fine powder with a particle size of 0<≤53 μm.

[0025] Get 0-53 μm TC4 fine powder 1kg, add the surfactant cetyltrimethylammonium bromide solution 2L that mass fraction is 0.5% wherein, stir 1h at room temperature, wash with distilled water, remove surfactant, will The obtained composite powder was placed in a vacuum oven and dried at 100 °C for 5 h.

[0026] Add 200ml of graphene oxide solution with a mass fraction of 0.5% to the dried composite powder, stir until the color of the solution turns from dark brown to transparent, and dry in a vacuum oven at 100°C for 5 hours to o...

Embodiment 2

[0029] A method for preparing a graphene alloy powder composite material for 3D printing, the specific operation steps and parameters are as follows:

[0030] For the preparation of alloy powder, the coating raw material is TA0 powder. The powder is prepared by EIGA method, and the powder is sieved three times with an ultrasonic vibrating sieving machine to obtain TA0 fine powder with a particle size of 0<≤53 μm.

[0031] Take 1 kg of TA0 fine powder of 0-53 μm, add 0.5% surfactant cetyltrimethylammonium bromide solution 2L to it, stir at room temperature for 1 h, wash with distilled water, remove the surfactant, and The obtained composite powder was placed in a vacuum oven and dried at 100 °C for 10 h.

[0032] Add 400ml of graphene oxide solution with a mass fraction of 0.5% to the dried composite powder, stir until the color of the solution turns from dark brown to transparent, and dry in a vacuum oven at 100°C for 10 hours to obtain graphene oxide alloy composite powder. ...

Embodiment 3

[0035] The coating raw material is AlSi10Mg powder, which is prepared by VIGA method, and the powder is sieved three times with an ultrasonic vibrating sieving machine to obtain AlSi10Mg fine powder with a particle size of 0<≤53 μm.

[0036] Take 1 kg of AlSi10Mg fine powder of 0-53 μm, add 2 L of surfactant cetyltrimethylammonium bromide solution with a mass fraction of 0.5%, stir at room temperature for 1 h, wash with distilled water, remove the surfactant, and The obtained composite powder was placed in a vacuum oven and dried at 100 °C for 5 h.

[0037] Add 400ml of graphene oxide solution with a mass fraction of 0.4% to the dried composite powder, stir until the color of the solution turns from dark brown to transparent, and dry in a vacuum oven at 100°C for 5 hours to obtain graphene oxide alloy composite powder.

[0038] Put the graphene oxide alloy composite powder into a vacuum furnace at 6X10 -3 Pa vacuum environment, 900 ° C, sintering for 1 h to obtain graphene al...

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Abstract

The invention discloses a method for preparing a graphene-coated alloy powder composite material for 3D printing, which belongs to the technical field of graphene composite material preparation. Cover the surface of the alloy powder with a cationic surfactant by mixing and stirring, then blend the graphene oxide with the treated powder, use electrostatic interaction to disperse the graphene oxide on the surface of the alloy powder, and heat the graphite oxide in a vacuum furnace Graphene-coated alloy powder, graphene oxide is reduced to graphene, and a graphene-coated alloy powder composite material is prepared. The advantage is that the electrostatic self-assembly method can make the graphene more uniformly cover the surface of the metal powder, and avoid the agglomeration of the graphene on the metal matrix.

Description

technical field [0001] The invention belongs to the technical field of graphene composite material preparation, in particular to a method for preparing a graphene-coated alloy powder composite material for 3D printing. technical background [0002] Graphene is a carbon atom with sp 2 Two-dimensional materials composed of hybrid orbitals were first prepared by Geim and Novoselov of the University of Manchester in the UK, and people began to conduct extensive research on them in the true sense. The experimentally detected graphene Young's modulus is as high as 1.0TPa, and its fracture strength can reach 125GPa, which is 200 times that of steel. In addition, it is currently the thinnest and hardest nanomaterial in the world. [0003] 3D printing technology is widely used in aerospace and other fields. Using 3D printing technology to prepare alloy parts, its material utilization rate can reach 100% in theory. Combining graphene as a reinforcement with alloy powder can improve ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/02B33Y70/00B22F1/05B22F1/065B22F1/145B22F1/16
CPCB22F1/065B22F1/145B22F1/16B33Y70/10B22F1/05B22F2999/00C22C1/0458B22F2998/10B22F9/14B22F2003/248B22F9/12B22F2201/20C01B32/184C01B32/198
Inventor 陈欣高正江赵庆峰高鑫张飞
Owner 中航迈特增材科技(北京)有限公司
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