Preparation method of metal material or metal composite material

A technology of metal composite materials and metal materials, which is applied in the field of preparing metal materials or metal composite materials by adding phenolic resin powder, can solve various problems such as unsatisfactory performance and poor compactness, achieve low cost, improve sintering compactness, and improve The effect of sintering diffusion

Active Publication Date: 2019-06-07
CENT SOUTH UNIV
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AI Technical Summary

Problems solved by technology

[0007] In order to solve the technical deficiencies of poor compactness and unsatisfactory performance of existing carbon / metal composite materials, the present invention provides a method for preparing metal materials or metal composite materials, aiming to obtain a carbon / metal composite material with a density of more than 99%, Metal materials or metal composite materials with excellent properties such as strength and toughness, especially a carbon / metal composite material that can ensure a density of more than 99% and excellent properties such as strength and toughness

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  • Preparation method of metal material or metal composite material
  • Preparation method of metal material or metal composite material
  • Preparation method of metal material or metal composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0094] In Example 1, granular graphite and electrolytic copper powder are added together into ball milling equipment for high-energy ball milling. The particle diameter of the added electrolytic copper powder is 150 μm, and the particle diameter of granular graphite is 30 μm; the volume ratio of electrolytic copper powder and granular graphite is 5:1, ball milling speed is 280r / min, ball milling time is 8h, ball milling balls are stainless steel balls, ball diameter is 3mm~10mm (mass ratio of ball milling ball diameters 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm is 4 :8:11:20:12:8:6:1), the mass ratio of the sum of the mass of granular graphite and electrolytic copper powder to the ball milling ball is 1:6.

[0095] After the ball milling, mix the copper powder embedded with granular graphite with alcohol, add ultrasonic treatment for 120min (ultrasonic frequency is 35KHz), keep the temperature of the solution at room temperature, and then vacuum-dry the solution after ultrasonic at 60°...

Embodiment 2

[0104] In Example 2, commercially available short carbon fibers were used as objects, and the short carbon fibers had a diameter of 7 μm and a length of 1 mm. Under vacuum conditions, keep warm at 700°C for 60 minutes for degumming treatment; then add electrolytic copper powder to the ball mill for high-energy ball milling, the particle size of the added electrolytic copper powder is 150 μm; the volume ratio of electrolytic copper powder to degummed short carbon fiber The ball milling speed is 250r / min, the milling time is 6h, the milling balls are stainless steel balls, and the ball diameter is 3mm~10mm (the mass ratio of ball milling ball diameters 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm is 4:8:11:20:12:8:6:1), the mass ratio of the sum of the mass of degummed short fiber and electrolytic copper powder to the ball milling ball is 1:6. The SEM morphology of the prepared carbon particles embedded in copper powder is as follows: figure 2 shown.

[0105] After ball milling, mix the ...

Embodiment 3

[0118] In Example 3, commercially available short carbon fibers are used as objects, and the short carbon fibers have a diameter of 8 μm and a length of 2 mm. Dissolve the prepared phenolic resin in an organic solvent to obtain a phenolic resin alcohol saturated solution; then impregnate the short carbon fibers in an 80°C phenolic resin alcohol saturated solution for 2 hours; then dry at 120°C for 2 hours. Then add electrolytic nickel powder to the ball milling equipment for high-energy ball milling. The particle size of the electrolytic nickel powder added is 150 μm; the volume ratio of electrolytic nickel powder to degummed short carbon fiber is 4:1, the ball milling speed is 300r / min, and the ball milling time The milling balls are stainless steel balls with a diameter of 3mm to 10mm (the mass ratio of ball milling balls with diameters of 3mm, 4mm, 5mm, 6mm, 7mm, 8mm and 9mm is 4:8:11:20:12:8:6: 1), the mass ratio of the sum of the mass of the phenolic resin-coated short fi...

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Abstract

The invention relates to a preparation method of metal material or metal composite material, and in particular to a method for preparing metal material or metal composite material by adding phenolic resin powder. The preparation method comprises two sets of schemes; the first scheme comprises the following steps of uniformly mixing raw materials, and pressing and sintering to obtain the metal material, wherein the raw materials comprise metal powder and phenolic resin powder; and the second scheme comprises the following steps of ball milling reinforcing bodies and matrix metal A to obtain metal powder with the reinforcing bodies embedded in the surface and the interior, carrying out ultrasonic treatment, low-temperature heating and chilling on the metal powder embedded with the reinforcing bodies to remove reinforcing particles on the surface of the metal powder to obtain a standby material, mixing the standby material with the phenolic resin powder for pressing and sintering, or mixing the standby material with the phenolic resin powder and granular phase B for pressing and sintering to obtain carbon / metal composite material. The method has the advantages that the preparation process is simple, obtained products are excellent in performance, and the method is convenient for large-scale application.

Description

technical field [0001] The invention relates to a method for preparing a metal material or a metal composite material, in particular to a method for preparing a metal material or a metal composite material by adding phenolic resin powder. Background technique [0002] Carbon particles (carbon fiber, graphite, etc.) reinforced metal matrix composites have both high electrical and thermal conductivity, good strength and toughness, corrosion resistance of metals, high strength and toughness of carbon fibers, and lubricating properties of graphite, etc., and are widely used in thermally conductive materials, conductive materials, Friction materials and other fields. [0003] In recent years, researchers have done a lot of research to improve the mechanical properties and high-temperature oxidation resistance of composite materials, mainly focusing on the improvement of the wettability of the carbon / metal interface, through the addition of carbon, such as the carbon surface coate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C47/14B22F1/00C22C101/10B22F1/12
CPCC22C47/14C22C1/05C22C32/00B22F1/12
Inventor 肖鹏方华婵
Owner CENT SOUTH UNIV
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