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A kind of preparation technology of metal matrix composite material

A composite material and preparation process technology, applied in the field of composite material preparation, can solve the problems of complex process, difficult and high dense packing of refractory component ceramics, high production cost, etc., and achieve high packing density, high interface bonding force, high The effect of material consistency

Active Publication Date: 2018-09-25
泰安蔚蓝金属陶瓷材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Liquid phase impregnation can basically prepare materials or composite materials that meet the requirements, but the long production cycle and high production costs make the materials prepared by this method expensive, which is not conducive to large-scale promotion and use.
In the research of casting or smelting methods, the high-speed airflow in the liquid injection process breaks the coarse grains to make the deposited grains smaller, or directly injects low-melting point component liquids, adding high-melting point component ceramics, directly The spray deposition method of obtaining the required material by deposition molding was proposed to solve the problem of abnormal grain growth during the material preparation process, but the process parameters of this method are difficult to control, and a large amount of particles will be generated inside the material during the direct deposition process. The composite material prepared by this method must be further densified by secondary extrusion or hot isostatic pressing to obtain a material that meets the requirements, and the process is complicated
Moreover, in the preparation process of metal composite materials with high volume fraction ceramics, it is difficult to pack high-density refractory component ceramics in the material, and it usually has high strength and is difficult to be compressed, even if secondary extrusion or The hot isostatic pressing process is also difficult to further densify the material

Method used

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  • A kind of preparation technology of metal matrix composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] See figure 1 In this embodiment, the high melting point component and the low melting point metal component of the metal matrix composite material use silicon powder and aluminum powder respectively, and the preparation method is as follows:

[0027] 1) Take the aluminum powder and silicon powder required for the preparation of the material according to the volume ratio of 25:75, put them into the mixer, and mix the materials to obtain mixed powder 5, which is ready for use;

[0028] 2) Put the mixed powder 5 prepared in step (1) into a thin-walled stainless steel sheath 3, one end of the sheath 3 is welded and sealed with a thin stainless steel plate; the inside of the sheath 3 is lined with graphite paper 4, and then the ratio sheath 3 A plug 2 with a slightly larger inner diameter plugs the other end of the closed envelope 3 and is inserted into the mold 1;

[0029] 3) Put the mold 1 in step (2) into the thin-walled stainless steel sheath 3 into a hot pressing furnace, pre...

Embodiment 2

[0034] See figure 1 In this embodiment, the high melting point component and the low melting point metal component of the metal matrix composite material are silicon carbide and aluminum respectively, and the preparation method is as follows:

[0035] 1) Take the aluminum powder and silicon carbide powder required for the preparation of the material according to the volume ratio of 30:70, put them into the mixer, and mix the materials to obtain mixed powder 5 for use;

[0036] 2) Put the mixed powder 5 prepared in step (1) into a thin-walled stainless steel sheath 3, one end of the sheath 3 is welded and sealed with a stainless steel sheet; the inside of the sheath 3 is lined with graphite paper 4, pre-treated under a pressure of 10 MPa Press for 5 minutes, and then plug the other end of the closed cover 3 with a plug 2 slightly larger than the inner diameter of the cover 3, and put it into the mold 1;

[0037] 3) Put the mold 1 into the thin-walled stainless steel sheath 3 in step ...

Embodiment 3

[0042] See figure 1 In this embodiment, the high melting point component and the low melting point metal component of the metal matrix composite material are respectively tungsten and copper, and the preparation method is as follows:

[0043] 1) Take the copper powder and tungsten powder required for the preparation of the material according to the volume ratio of 35:65, put them into the mixing machine, and mix the materials to obtain mixed powder 5 for use;

[0044] 2) Put the mixed powder 5 obtained in step (1) into a thin-walled stainless steel sheath 3, one end of the sheath 3 is welded and sealed with a stainless steel sheet; the inside of the sheath 3 is lined with graphite paper 4, and the sheath 3 is pre-treated under a pressure of 30MPa Press for 5 minutes, and then plug the other end of the closed cover 3 with a plug 2 slightly larger than the inner diameter of the cover 3, and put it into the mold 1;

[0045] 3) Put the mold 1 in step (2) into the thin-walled stainless s...

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Abstract

The invention relates to the field of composite material preparation, and discloses a preparation process of a metal-based composite material. The preparation process comprises the following steps of mixing materials, putting the mixed materials into a sheath, putting the sheath into a mold, putting the mold into a hot pressing device, and preparing the composite material according to a certain temperature and certain pressure parameters, and the metal-based composite material with good performance is finally obtained. According to the preparation process, the composite material containing high-volume-fraction refractory components can be prepared simply, rapidly and economically, the prepared composite material can have higher packing density and material consistency, and the interfacial binding force is relatively high between the components of the prepared composite material.

Description

(1) Technical field [0001] The invention relates to the field of composite material preparation, in particular to a preparation process of a metal matrix composite material. (2) Background technology [0002] When preparing metal or cermet composite materials, it is often necessary to heat the temperature to above the melting temperature of the high melting point component, and then prepare the required materials by smelting or casting. This method requires a lot of heat and expensive equipment. Cost investment, and it is also difficult to prevent the abnormal growth of crystal grains during the material preparation process. When the material is prepared by the stirring and casting method, due to the poor wettability between the ceramic and the metal, the uniformity of the prepared material is poor. When materials are prepared by powder metallurgy, the advantages are that the composition is easy to adjust and the control is accurate. However, because the high melting point compo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/05C22C1/10B22F3/16B22F3/10
CPCB22F3/1035B22F3/16C22C1/051
Inventor 辛红星辛海燕李成祥王太纪
Owner 泰安蔚蓝金属陶瓷材料有限公司