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A kind of preparation method of porous ceramic/metal bicontinuous phase composite material

A technology of porous ceramics and dual continuous phases, which is applied in the field of composite material preparation, can solve the problems of complex preparation process, slow casting or impregnation, and high production cost, and achieve fast material preparation speed, low equipment requirements, and low manufacturing cost. Effect

Inactive Publication Date: 2015-09-30
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to solve the problem that the preparation process of porous ceramic / metal composite materials in the prior art is relatively complicated, casting or impregnation is slow, efficiency is low, production cost is high, and some alloy ingots need special equipment or are difficult to prepare. disadvantages, while providing a method for porous ceramic / metal bicontinuous phase composites

Method used

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  • A kind of preparation method of porous ceramic/metal bicontinuous phase composite material

Examples

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Effect test

Embodiment 1

[0046] A method for preparing a porous ceramic / metal double continuous phase composite material, specifically comprising the steps of:

[0047] (1) Calculated by mass ratio, that is, Al-Mg alloy powder with a ratio of Al:Mg of 92:8 is used as the matrix powder;

[0048] (2) Put SiC porous ceramics as a reinforcing phase into an alumina ceramic crucible, then pour the matrix powder in step (1) into the porous ceramics, and the volume of the matrix powder poured into is not less than all the pores of the SiC porous ceramics Volume, continuously rotate the crucible and gently shake the crucible, so that the SiC porous ceramic pore bars are filled with matrix powder, and then pour the matrix powder with a thickness 2.2 times the thickness of the porous ceramic on the skeleton filled with the mixed powder, so as to After the matrix powder is melted and shrunk, it can ensure that the pores of the porous ceramics are filled with the matrix melt;

[0049] (3) Put the SiC porous ceram...

Embodiment 2

[0053] A method for preparing a porous ceramic / metal double continuous phase composite material, specifically comprising the steps of:

[0054] (1) Calculated by mass ratio, that is, Al-Si-Mg alloy powder with a ratio of Al:Si:Mg of 70:10:20 is used as the matrix powder;

[0055] (2) Put the SiC porous ceramics into the container as a reinforcing phase, then pour the matrix powder in step (1) into the porous ceramics, the volume of the matrix powder poured is not less than the total pore volume of the SiC porous ceramics, pass Continuously rotate and gently shake the crucible to fill the pores of the SiC porous ceramics with matrix powder, and pour the matrix powder with a thickness of 2.6 times the thickness of the porous ceramics on the SiC porous ceramics filled with the matrix powder, so that the matrix After the powder melts and shrinks, it can ensure that the pores of the porous ceramics are filled with the matrix melt;

[0056] (3) Put the SiC porous ceramic filled wit...

Embodiment 3

[0058] A method for preparing a porous ceramic / metal double continuous phase composite material, specifically comprising the steps of:

[0059] (1) Calculated by mass ratio, that is, Cu-Al-Mg alloy powder with a ratio of Cu:Al:Mg of 82:10:8 is used as the matrix powder;

[0060] (2) Put the SiC porous ceramics into the container as a reinforcing phase, then pour the matrix powder in step (1) into the porous ceramics, the volume of the matrix powder poured is not less than the total pore volume of the SiC porous ceramics, pass Continuously rotate and gently shake the crucible to fill the pores of the SiC porous ceramics with matrix powder, and then pour the matrix powder with a thickness 2.3 times the thickness of the porous ceramics on the SiC porous ceramics filled with the matrix powder, so that the matrix After the powder melts and shrinks, it can ensure that the pores of the porous ceramics are filled with the matrix melt;

[0061] (3) Put the SiC porous ceramic filled wi...

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Abstract

The invention discloses a preparation method of a porous ceramic / metal double-continuous-phase composite material. The preparation method is characterized in that one of metal powder and alloy powder, mixed powder of the metal powder and the alloy powder, mixed powder of one or two of metal powder and alloy powder and nonmetal powder or powder obtained by mixing metal powder, alloy powder and nonmetal powder is used as basal powder; the porous ceramic is used as a reinforcing phase to be placed into a vessel, then the basal powder is poured into the porous ceramic, pores of the porous ceramic are filled with the basal powder through the continuous rotation and vibration or the low-pressure pressing, and the basal powder of an appropriate quantity is then poured onto the porous ceramic which is filled with the basal powder; the porous ceramic which is filled with the basal powder is placed into a sintering furnace, and after preserving the heat for a period of time under the protection atmosphere, the sintered powder is naturally cooled to the room temperature so as to obtain the porous ceramic / metal double-continuous-phase composite material. By adopting the preparation method, no special device is needed, the process is simple, and the production efficiency is high.

Description

technical field [0001] The invention belongs to a preparation method of a composite material, in particular to a preparation method of a porous ceramic / metal double continuous phase composite material. Background technique [0002] Porous ceramic / metal composite material is a structural form of ceramic / metal composite material developed in the 1980s, that is, the ceramic phase is continuously distributed in a three-dimensional network in the composite material, and the metal phase is also in a three-dimensional network in the composite material. Continuously distributed, they present a unique network structure in space. Since the network ceramic skeleton is three-dimensionally continuous with the metal, each phase can exert its unique properties. Therefore, porous ceramic / metal dual continuous phase composites have high strength, high hardness, good wear resistance and thermal shock resistance, high thermal conductivity, and low thermal expansion coefficient. Electronic pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10
Inventor 江国健彭伟
Owner SHANGHAI INST OF TECH
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