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

A composite material and particle reinforcement technology is applied in the field of preparation of wear-resistant materials, which can solve the problems of insufficient metallurgical reaction between reinforcing particles and matrix, improved mechanical properties of composite materials, and poor wettability between particles and matrix. Improved mechanical properties and uniform particle distribution

Active Publication Date: 2018-03-06
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this preparation method is that due to the poor wettability of the particles and the matrix, and the remelting temperature is not high, the metallurgical reaction between the reinforced particles and the matrix cannot occur sufficiently, and the resulting interface width is relatively low, which ultimately reduces the mechanical properties of the composite material. The performance improvement is very little, and the cost performance of this process is also very low, thus limiting its use in industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The preparation method of the particle-reinforced composite material described in this embodiment, its specific steps are as follows:

[0020] (1) WC particles with a particle size of 380-530 μm, cast iron powder with a particle size of 40-45 μm, W+Fe powder with a particle size of 20-30 μm and an ethanol solution (the content of the ethanol solution is 3% of the mass fraction of the reinforcing particles %) into a ball mill tank, uniformly mixed on the ball mill for 60 minutes, the speed of the ball mill is 360 r / min, and then put the mixed powder into a drying oven for drying; the volume fraction of reinforcing particles in the composite material is 50%, and the rest is the base part.

[0021] (2) Put the mixed powder obtained after drying into a mold, and compact it in a pressure testing machine. The holding pressure is 100kN, and the holding time is 30 minutes, and then the preform is obtained.

[0022] (3) Then put the preform into a vacuum tube furnace for sinter...

Embodiment 2

[0025] The powder sintering method is used to prepare the particle-reinforced steel-based composite materials in which the Ni powder (particle size is 10-15 μm) accounts for 0%, 5%, 10%, 15%, and 20% of the mass fraction of the preform, and the reinforcing particles are carbonized. Silicon, the particle size is 150-200μm, the volume fraction of reinforcing particles in the composite material is 50%, the rest is the matrix part, the matrix is ​​cast steel powder, the powder particle size is 20-25μm.

[0026] The preparation method of the particle-reinforced composite material described in this embodiment, its specific steps are as follows:

[0027] (1) SiC particles with a particle size of 380-530 μm, cast steel powder with a particle size of 20-25 μm, Ni powder with a particle size of 10-15 μm and an ethanol solution (the content of the ethanol solution is 3% of the mass fraction of the reinforcing particles %) into a ball mill tank, uniformly mixed on the ball mill for 80 min...

Embodiment 3

[0032] The particle-reinforced iron-based composites in which Ni-Fe powder (particle size is 20-25 μm) accounted for 0%, 5%, 10%, 15%, and 20% of the mass fraction of the preform were prepared by powder sintering method, and the reinforcing particles were Al2O3, the particle size is 200-400μm, the volume fraction of reinforcing particles in the particle-reinforced metal matrix composite material is 50%, the rest is the matrix part, the matrix is ​​cast iron powder, and the powder particle size is 30-40μm.

[0033] The preparation method of the particle-reinforced composite material described in this embodiment, its specific steps are as follows:

[0034] (1) Mix aluminum oxide particles with a particle size of 200-400 μm, cast iron powder with a particle size of 30-40 μm, Ni-Fe powder with a particle size of 20-25 μm and ethanol solution (the content of the ethanol solution is to enhance the quality of the particles. 3% of the fraction) into a ball mill tank, uniformly mixed o...

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Abstract

The invention relates to a preparation method for a particle reinforcement metal matrix composite material, and belongs to the technical field of wear-resistant material preparation. According to the method, one kinds of metal powder including Ni, Ni-Fe, Co, Co-Fe and W-FE is added to improve the performance of the particle reinforcement metal matrix composite material; reinforced particles, matrix metal powder and metal powder are subject to ball-milling powder mixing and compaction to obtain a preformed blank; the particle reinforcement metal matrix composite material is finally obtained after vacuum sintering is carried out; and the adding amount of the alloy powder accounts for 5% to 20% of the mass fraction of the preformed blank. The mechanical property of the composite material prepared from the method is obviously improved, and references are provided for researchers who research the wear-resisting fields such as steel, metallurgy and mines, parts used under sudden cooling and sudden heating conditions or the performance of the composite material.

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 preparation of wear-resistant materials. Background technique [0002] Nowadays, wear-resistant materials are widely used in mining, building materials, metallurgy, electric power, chemical industry, machinery and agriculture. Especially in the mining field, more than 3.5 million tons of wear-resistant materials are consumed due to wear every year, and this figure is increasing. It is growing at a high annual growth rate, so the consumption of wear-resistant materials is very huge and cannot be ignored. With the rapid development of modern industry and society, the requirements for the wear resistance of materials are getting higher and higher. It is difficult for a single engineering material such as metal and ceramics to meet the requirements of the current industry. The particle-reinforced metal matrix compo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B22F3/02B22F3/10C22C33/02
CPCB22F1/0003B22F3/02B22F3/1007B22F2201/11B22F2201/20C22C33/0228
Inventor 李祖来韦贺蒋业华山泉周荣王鹏飞
Owner KUNMING UNIV OF SCI & TECH