Preparation method for carbon particle reinforced metal base composite materials

A composite material and carbon particle technology, which is applied in the field of metal matrix composite materials, can solve various problems such as unsatisfactory performance and poor compactness, and achieve the effects of low cost, improved sintered compactness, and good wear resistance

Active Publication Date: 2019-03-26
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the technical deficiencies of poor compactness and unsatisfactory properties of existing carbon particle reinforced metal matrix composite materials, the present invention provides a method for preparing carbon particle reinforced metal matrix composite materials, aiming to obtain good compactness, Carbon particle reinforced metal matrix composite material with excellent properties such as strength and toughness (the present invention is also referred to as composite material for short)

Method used

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  • Preparation method for carbon particle reinforced metal base composite materials
  • Preparation method for carbon particle reinforced metal base composite materials
  • Preparation method for carbon particle reinforced metal base composite materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Step (1): In Example 1, commercially available short carbon fibers are used as objects, and the short carbon fibers have a diameter of 7 μm and a length of 1 mm. The short carbon fiber bundles are heat-treated at 700°C for 50 minutes under an inert atmosphere or vacuum condition. The short carbon fiber bundle, phenolic resin powder I and copper powder are mixed according to the volume ratio of 9:1:90 and then ball milled. The particle size of the electrolytic copper powder is 150 μm, and the particle size of the phenolic resin powder I is 80 μm to obtain a mixed powder; The condition parameters of ball milling are: rotating speed is 280r / min, ball milling time is 6h, ball milling balls are stainless steel balls and hard alloy balls, ball diameter is 3mm~10mm (ball milling ball diameters are 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, The mass ratio of 9mm is 4:8:11:20:12:8:6:1). Then sieve 400 mesh sieves, get the undersieve, as standby material (SEM figure sees figure 2 ), the mas...

Embodiment 2

[0093] Step (1): In Example 2, 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. Under vacuum condition, 700 ℃ of insulations 60min, carry out degumming treatment; Then join in the ball mill equipment together with electrolytic nickel powder and carry out high-energy ball milling, the particle diameter of the electrolytic nickel powder added is 150 μ m, short carbon fiber bundle, phenolic resin powder 1 ( The particle size is 50μm) and the electrolytic nickel powder are mixed according to the volume ratio of 9.5:0.5:90, and then ball milled. The ball milling speed is 250r / min, and the ball milling time is 6h. 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, the mass ratio of 9mm is 4:8:11:20:12:8:6:1), the ratio of the quality of degummed short fiber, phenolic resin powder I and electrolytic nickel copper powder The mass ratio of sum to ball milling ball is 1:6.

[0094] Step (2): After ball milling, mix the...

Embodiment 3

[0111] Step (1): 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. Under vacuum conditions, heat preservation at 720°C for 60min, and degumming treatment; Add the phenolic resin powder I to the ball milling equipment for high-energy ball milling, mix the short carbon fiber bundles, phenolic resin powder I and aluminum powder according to the volume ratio of 9:1:90, and then ball mill, the ball milling speed is 250r / min, and the ball milling time is 6h , the ball milling ball is a stainless steel ball, the ball diameter is 3mm ~ 10mm (the mass ratio of ball milling ball diameter 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, phenolic resin powder I and aluminum powder to the ball milling ball is 1:6.

[0112] Step (2): After ball milling, mix the prepared aluminum powder embedded with carbon particles a...

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Abstract

The invention relates to a preparation method for carbon particle reinforced metal base composite materials, and belongs to the technical field of metal material preparation. Carbon parcel and phenolic resin uniform-embedded metal powder is obtained through high energy of degummed short carbon fibers and phenolic resin powder, is ultrasonically processed and dried to obtain surface carbon removedand carbon and phenolic resin powder embedded metal powder, and is mixed with the phenolic resin powder and other components for pressing and sintering to obtain the carbon particle reinforced metal base composite materials. The preparation method successfully solves the problem of loose interface sintering of the carbon particle embedded metal powder in the sintering process; under the precondition of realizing compact sintering of the metal powder, the mechanical performance and the wear resistance of the designed and prepared metal composite materials are greatly improved; the preparation process is simple; and the cost is low.

Description

technical field [0001] The invention relates to a metal matrix composite material, in particular to a preparation method of a carbon particle reinforced metal matrix composite material. 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 coated with metal, metal Adding other alloying elements t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C1/05C22C47/14C22C47/02C22C101/10
CPCC22C1/05C22C47/02C22C47/14
Inventor 方华婵肖鹏
Owner CENT SOUTH UNIV
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