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A kind of preparation method of particle reinforced metal matrix composite material

A composite material and particle-reinforced technology, applied in the field of new materials, can solve problems such as poor bonding strength between the composite layer and the matrix, complex manufacturing process, etc., and achieve the effects of saving metal, single internal structure, and reliable process

Active Publication Date: 2016-06-08
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The local composite material made by this method has relatively poor bonding strength between the composite layer and the matrix, and the manufacturing process is complicated

Method used

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  • A kind of preparation method of particle reinforced metal matrix composite material
  • A kind of preparation method of particle reinforced metal matrix composite material
  • A kind of preparation method of particle reinforced metal matrix composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation method of the particle-reinforced metal matrix composite material described in this embodiment specifically includes the following steps:

[0022] (1) Take Fe-C powder with a C content of 1%, the particle size of Fe-C powder is 43-53μm, and weigh tungsten carbide according to the volume ratio of tungsten carbide particles and Fe-C powder at a ratio of 1:1 Particles and Fe-C powder, wherein the particle size of tungsten carbide particles is 180-250μm, put it in a planetary ball mill, set its speed to 180r / min, and ball mill for 30min;

[0023] (2) Put the powder in the graphite mold, set the sintering parameters of spark plasma sintering (SPS) as follows: the highest sintering temperature is 950°C, the applied pressure is 9.4kN, the holding time is 5min, and the vacuum is protected;

[0024] (3) Place the sintered sample in a vacuum tube furnace, pass in argon gas protection, set the temperature at 1340 ° C, and take it out to obtain a tungsten carbide pa...

Embodiment 2

[0028] The preparation method of the particle-reinforced metal matrix composite material described in this embodiment specifically includes the following steps:

[0029] (1) Take Fe powder with a particle size of 53-74 μm, weigh tungsten carbide particles and Fe powder according to the volume ratio of tungsten carbide particles and Fe powder at a ratio of 1:1, and the particle size of tungsten carbide particles is 180-250 μm , put it in a planetary ball mill, set its rotating speed to 200r / min, and ball mill for 60min;

[0030] (2) Then put the mixed powder in a graphite mold, and then put it in a spark plasma sintering equipment for sintering, the sintering temperature is 1000°C, the holding time is 6min, the applied pressure is 8kN, and vacuum protection;

[0031] (3) Place the sintered sample in a vacuum tube furnace, pass it into the argon gas protection, set the temperature at 1400°C, and after taking it out, it will be a tungsten carbide particle-reinforced composite mat...

Embodiment 3

[0034] The preparation method of the particle-reinforced metal matrix composite material described in this embodiment specifically includes the following steps:

[0035] (1) Take Fe powder with a particle size of 74-178 μm, weigh tungsten carbide particles and Fe powder according to the volume ratio of tungsten carbide particles and Fe powder at a ratio of 1:1, and the average particle size of tungsten carbide particles is 180- 250 μm, put it in a planetary ball mill, set its speed at 130r / min, and ball mill for 40min;

[0036] (2) Put the Fe powder on the bottom of the graphite mold, then place the mixed powder after ball milling on the upper part of the graphite mold, and then put it in the spark plasma sintering equipment for sintering. The sintering temperature is 1050°C, the holding time is about 5 minutes, and the applied pressure is 8.5kN, vacuum protection;

[0037] (3) Place the sintered sample in a vacuum tube furnace, vacuum protection, set the remelting temperatur...

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Abstract

The invention discloses a preparation method of a particle-reinforced metal matrix composite material, and belongs to the technical field of a novel material. The method comprises the following steps: firstly, putting reinforced particles and matrix powder into a ball grinder, so as to evenly mix; then putting the mixed powder into a graphite jig, putting into spark plasma sintering (SPS) equipment; setting a proper sintering parameter, and putting the sintered sample into a vacuum tube furnace to set heating temperature, so as to change a bonding interface between the reinforced particles and the matrix in the composite material, or prompt interface reaction. The reinforced particles in the composite material prepared by the method can be well evenly distributed inside a composite layer, so that the comprehensive properties of the materials are greatly improved, the composite material is even and single in texture, the mechanical property can be changed to a certain extent, and reference is provided for high-temperature wear-resisting fields, such as steel, metallurgy, coal and the like, parts under chilled and heated conditions or other researchers for researching the composite material performances.

Description

technical field [0001] The invention relates to a method for preparing a particle-reinforced metal matrix composite material, which belongs to the technical field of new materials. Background technique [0002] The development of modern industry has higher and higher requirements on the wear resistance of materials. Mining machinery, engineering machinery, agricultural machinery and various crushing and grinding machinery are used in metallurgy, mining, building materials, electric power, chemical industry, coal and agriculture. , The wearing parts of these mechanical equipment are subject to the wear and tear of various materials and grinding bodies such as sand, ore, soil, etc., and consume a large amount of metal every year. Because composite materials are two or more materials with different characteristics, they are organically combined through physical or chemical methods to give full play to their respective advantages. Therefore, composite materials have excellent co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/02
Inventor 李祖来黄浩科蒋业华山泉
Owner KUNMING UNIV OF SCI & TECH
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