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: 2021-08-06
GUANGDONG INST OF NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Nano silicon carbide particle reinforced copper-based spherical metal powder suitable for 3D printing and preparation method thereof
  • 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. The method specifically includes the following steps:

[0036] S1: Weigh the raw materials comprising nano-silicon carbide, copper powder and inorganic salt in proportion, place the raw materials on a mixer for ball milling, wherein the volume ratio of the sum of the volumes of copper powder and nano-silicon carbide to the inorganic salt is 3: 97~15:85, and the volume ratio of nano silicon carbide and copper powder is 0.1:1~1:1;

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

[0038] S3: placing the raw material powder obtained in step S2 in a vacuum melting furnace for heating and melting, ultrasonically dispersing the melt and then cooling it;

[0039] S4: crushing the cooled massive solid, the partic...

Embodiment 1

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

[0063] S1: Weigh the raw materials composed of nano-silicon carbide, copper powder and potassium chloride in proportion, the average particle diameter of nano-silicon carbide is 50nm, the average particle diameter of copper powder is 45 μm, and the average particle diameter of described potassium chloride is 500μm, 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 the glove box protected by argon, and add zirconia grinding balls into the mixing bottle Sealing, wherein the mass ratio of grinding balls and raw materials is 4:1; the sealed mixing bottle is placed on a mixer for ball milling, the ball milling time is 24h, and the ball mill rotating speed is 300r / min;

[0064] S2: Sieve the bal...

Embodiment 2

[0071] The preparation method of nano-silicon carbide particle-reinforced copper-based spherical metal powder suitable for 3D printing in this embodiment is basically the same as that of 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 diameter of nano-silicon carbide is 50nm, the average particle diameter of copper powder is 80 μ m, the average particle diameter of described potassium chloride is 500 μ m, 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 particle reinforced copper-based spherical metal powder suitable for 3D printing. Small-size nano silicon carbide particles are added into copper powder in a dispersed mode through a molten salt-ultrasonic dispersion method, and the prepared material can effectively make up for the defects that a pure copper material is low in use temperature, poor in high-temperature strength and prone to abrasion by making full use of the advantages of high hardness, high strength, high use temperature and small thermal expansion coefficient of silicon carbide, so that the room-temperature and high-temperature mechanical properties of the pure copper material are effectively improved. The preparation method has the advantages that the preparation process is simple, the process is controllable, the repeatability is good, a material system is convenient to adjust, and the method is suitable 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 industrial fields such as electric power, electronics, heat dissipation components, and machinery manufacturing. However, the strength and hardness of pure copper are relatively low, and its heat resistance and wear resistance are poor, which limits 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-based composites, also known as dispersion-strengthened copper, are a type of me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C32/00B22F1/00B22F9/04B33Y70/00C22C1/10
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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