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A kind of nano-silicon carbide particle reinforced copper-based spherical metal powder suitable for 3D printing and preparation method thereof

A nano-silicon carbide and particle-reinforced technology, applied in the field of additive manufacturing materials, can solve the problems of high-temperature strength, poor wear resistance, high reflection, and difficult printing of pure copper materials, and achieve high use temperature, simple process, and reduce difficult printing Effect

Active Publication Date: 2022-07-15
GUANGDONG INST OF NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that pure copper materials are difficult to print due to high reflection and high thermal conductivity, and at the same time improve the shortcomings of pure copper materials such as high-temperature strength and poor wear resistance, and then provide a nano-silicon carbide suitable for 3D printing Preparation Method of Particle Reinforced Spherical Copper Matrix Composite Material

Method used

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  • A kind of nano-silicon carbide particle reinforced copper-based spherical metal powder suitable for 3D printing and preparation method thereof
  • A kind of nano-silicon carbide particle reinforced copper-based spherical metal powder suitable for 3D printing and preparation method thereof

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preparation example Construction

[0035] An embodiment of the present invention provides a method for preparing a nano-silicon carbide particle reinforced copper-based spherical metal powder suitable for 3D printing, and the method specifically includes the following steps:

[0036] S1: take by weighing the raw material comprising nano-silicon carbide, copper powder and inorganic salt in proportion, the raw material is placed on a mixer and ball-milled, wherein, the volume sum of copper powder and nano-silicon carbide and the volume ratio of inorganic salt are 3: 97~15:85, and the volume ratio of nano silicon carbide to copper powder is 0.1:1~1:1;

[0037] S2: sieve the ball-milled mixture to obtain raw material powder containing copper powder, nano-silicon carbide and inorganic salt;

[0038] S3: the raw material powder obtained in step S2 is placed in a vacuum melting furnace for heating and melting, and the melt is ultrasonically dispersed and cooled;

[0039] S4: pulverize the cooled massive solid, the si...

Embodiment 1

[0062] The preparation method of the nano-silicon carbide particle reinforced copper-based spherical metal powder suitable for 3D printing in this embodiment specifically includes the following steps:

[0063] S1: take by weighing the raw material made up of nano-silicon carbide, copper powder and potassium chloride in proportion, the average particle size of nano-silicon carbide is 50nm, the average particle size of copper powder is 45 μm, and the average particle size of described potassium chloride is 500 μm, the volume ratio of nano-silicon carbide, copper powder and potassium chloride is 4.44:5.56:90, put the raw materials into the mixing bottle in an argon-protected glove box, and after adding zirconia grinding balls to the mixing bottle Sealing, wherein the mass ratio of the grinding ball to the raw material is 4:1; the sealed mixing bottle is placed on the mixing machine for ball milling, the ball milling time is 24h, and the ball mill rotating speed is 300r / min;

[00...

Embodiment 2

[0071] The preparation method of the nano-silicon carbide particles reinforced copper-based spherical metal powder suitable for 3D printing in this embodiment is basically the same as that in Example 1, the difference is that in step S1 of this embodiment, the raw materials are composed of nano-silicon carbide, copper powder and Potassium chloride composition, wherein, the average particle size of nano-silicon carbide is 50nm, the average particle size of copper powder is 80μm, the average particle size of the potassium chloride is 500μm, the volume of nano-silicon carbide, copper powder and potassium chloride The ratio is 4.44:5.56:90.

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Abstract

The invention discloses a preparation method of nano-silicon carbide particles reinforced copper-based spherical metal powder suitable for 3D printing. In the present invention, the method of molten salt-ultrasonic dispersion is used to disperse and add small-sized nano-silicon carbide particles into the copper powder. Taking advantage of the advantages of silicon carbide's high hardness, high strength, high use temperature and small thermal expansion coefficient, the prepared material can It effectively makes up for the shortcomings of low use temperature, poor high temperature strength and easy wear of pure copper materials, so that the room temperature and high temperature mechanical properties of pure copper materials are effectively improved. The preparation method of the invention has the advantages of simple preparation process, controllable process, good repeatability, easy adjustment of the material system, and suitability for laboratory and industrial small batch production.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing materials, in particular to a nano-silicon carbide particle reinforced copper-based spherical metal powder suitable for 3D printing and a preparation method thereof. Background technique [0002] Pure copper has high electrical conductivity, high thermal conductivity, corrosion resistance, good ductility and other properties, so it is widely used in electric power, electronics, heat dissipation components, machinery manufacturing and other industrial fields. However, the strength and hardness of pure copper are relatively low, and its heat resistance and wear resistance are poor, thus limiting its service conditions and life. Therefore, improving the relevant physical properties of pure copper materials is a practical problem currently faced by the industry. [0003] Ceramic particle reinforced copper matrix composite material, also known as dispersion-strengthened copper, is a typ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C32/00B22F1/065B22F9/04B33Y70/00C22C1/10
CPCB22F1/0003C22C9/00C22C32/0063B22F9/04C22C1/1036C22C1/1094B33Y70/00B22F2009/043C22C1/1047
Inventor 田卓路建宁冯晓伟林颖菲冯波
Owner GUANGDONG INST OF NEW MATERIALS
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