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Recycling utilization process of high-volume-fraction ceramic whisker reinforced metal matrix composite

A technology of high volume fraction and composite materials, which is applied in the field of recycling technology of high volume fraction ceramic whisker reinforced metal matrix composites, to achieve the effect of simple process and low cost

Inactive Publication Date: 2018-05-15
张磊 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to develop a simple, low-cost, and pollution-free recycling process for high-volume ceramic whisker-reinforced metal matrix composites, which can adapt to the current national efforts Emphasized the development direction of green environmental protection industry

Method used

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  • Recycling utilization process of high-volume-fraction ceramic whisker reinforced metal matrix composite
  • Recycling utilization process of high-volume-fraction ceramic whisker reinforced metal matrix composite
  • Recycling utilization process of high-volume-fraction ceramic whisker reinforced metal matrix composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Residue pretreatment: at room temperature, immerse the composite material residue with a volume fraction of magnesium borate whiskers of 60vol% in a KOH solution with a mass concentration of 3% for surface cleaning treatment, soak for 30 minutes, and then wash with deionized water After the residual liquid is dried in a vacuum drying oven, it is then preliminarily crushed by a rotary crusher with a ceramic shaft to obtain debris;

[0038] (2) Mechanical grinding: use planetary ball grinding to refine the obtained debris, use zirconia ceramic balls, the ball-to-material ratio is 10:1, the speed is 300 rpm, and the grinding time is 4 hours. After grinding, fine particles are obtained. The condensed composite material powder has a particle size of micron level;

[0039] (3) Cold pressing: Put the composite material powder into a steel mold, before loading the powder, evenly coat a layer of lubricating oil on the inner wall of the mold, select the process conditions of ...

Embodiment 2

[0044] (1) Residue pretreatment: at room temperature, immerse the composite material residue with a volume fraction of magnesium borate whiskers of 60vol% in a NaOH solution with a mass concentration of 5% for surface cleaning treatment, soak for 20 minutes, and then wash with deionized water After the residual liquid is dried in a vacuum drying oven, it is then preliminarily crushed by a rotary crusher with a ceramic shaft to obtain debris;

[0045] (2) Mechanical grinding: use planetary ball grinding to refine the obtained debris, use zirconia ceramic balls, the ball-to-material ratio is 20:1, the speed is 400 rpm, and the grinding time is 3 hours. After grinding, fine The condensed composite material powder has a particle size of micron level;

[0046] (3) Cold pressing: Put the composite material powder into a steel mold, select the process conditions of pressurization 35Mpa, pressure holding 20min, pre-press the composite material powder on a universal hydraulic press, ma...

Embodiment 3

[0050] (1) Residue pretreatment: at room temperature, immerse the composite material residue with a volume fraction of magnesium borate whiskers of 60vol% in a NaOH solution with a mass concentration of 3% for surface cleaning treatment, soak for 30 minutes, and then wash with deionized water After the residual liquid is dried in a vacuum drying oven, it is then preliminarily crushed by a rotary crusher with a ceramic shaft to obtain debris;

[0051] (2) Mechanical grinding: use planetary ball grinding to refine the obtained debris, use zirconia ceramic balls, the ball-to-material ratio is 20:1, the speed is 350 rpm, and the grinding time is 3 hours. After grinding, fine particles are obtained. The condensed composite material powder has a particle size of micron level;

[0052] (3) Cold pressing: Put the composite material powder into a steel mold, select the process conditions of pressurization 35Mpa, pressure holding 20min, pre-press the composite material powder on a unive...

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Abstract

The invention discloses a recycling utilization process of a high-volume-fraction ceramic whisker reinforced metal matrix composite. Through the process, residual scraps obtained by machining the ceramic whisker reinforced metal matrix composite is recycled through a solid phase regeneration mechanism. The process mainly comprises the steps of (1) residual scrap pretreatment, (2) mechanical grinding, (3) cold pressing, (4) thermal treatment and (5) analysis and characterization, wherein ceramic whisker in the composite comprises silicon carbide whisker and magnesium borate whisker; metal comprises aluminum, and the content of the magnesium borate whisker is 50-75 vol%. The regenerated high-volume-fraction ceramic whisker reinforced metal matrix composite obtained through the process is simple in technological process, low in cost and free of pollution in the regeneration process, reutilization of the ceramic whisker reinforced metal matrix composite is achieved, and the high-volume-fraction ceramic whisker reinforced metal matrix composite can adapt to the direction of environmental protection industrialization strongly emphasized by the country at present.

Description

technical field [0001] The invention relates to a preparation process of a metal matrix composite material, in particular to a recycling process of a high volume fraction ceramic whisker reinforced metal matrix composite material. Background technique [0002] Metal matrix composites have the advantages of light weight and high specific strength. Among them, whisker-reinforced metal matrix composites have broad application prospects in aviation, aerospace, automotive and other industries due to their high wear resistance and high temperature softening resistance. Although whisker-reinforced metal matrix composites have excellent properties and have been extensively studied, their development and application have been constrained by the price of whiskers. With the gradual improvement of whisker preparation technology and the reduction of cost, the research and application of whisker-reinforced metal matrix composites, especially whisker-reinforced aluminum matrix composites, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C47/14C22C49/14B22F9/04B22F3/02B22F3/14C22C101/06
CPCC22C47/14B22F3/02B22F3/14B22F9/04B22F2003/145B22F2009/043C22C49/14
Inventor 张磊于泽源史校瑞
Owner 张磊