Preparation method of copper/alumina in-situ composite honeycomb material

An in-situ composite, honeycomb material technology, applied in the field of porous composite materials, can solve the problems of high cost of main raw materials, high production cost, low interface bonding strength, etc. Effect

Active Publication Date: 2018-09-14
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the conventional powder plastic extrusion method to prepare metal / ceramic composite honeycomb materials has poor compatibility between ceramic particles and metal matrix, and low interface bonding strength, which has negative effects on the mechanical properties and high temperature performance of metal / ceramic composite honeycomb materials. In addition, the conventional powder plastic extrusion method to prepare metal / ceramic composite honeycomb materials still has the disadvantage of high cost of main raw materials, resulting in high production costs

Method used

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  • Preparation method of copper/alumina in-situ composite honeycomb material
  • Preparation method of copper/alumina in-situ composite honeycomb material

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Experimental program
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Effect test

Embodiment 1

[0040] The preparation method of a kind of copper / alumina in-situ composite honeycomb material of this embodiment, such as figure 1 As shown, the specific steps are as follows:

[0041] (1) Homogenous mixing and refining: firstly mix 200 purpose commercially available industrial pure aluminum powder and 400 purpose commercially available industrial copper oxide powder according to the proportion that aluminum powder accounts for 1.3% of the total mass of aluminum powder and copper oxide powder to obtain mixed powder , then the plasticizer and water are uniformly mixed according to the ratio of the plasticizer to 25% of the total mass of the plasticizer and water to obtain a mixture, and finally the mixed powder of aluminum powder, copper oxide powder, plasticizer and water are mixed according to The mixed powder accounts for 80% of the total mass of the mixed powder and the mixed mixture, and the plasticizer is polyvinyl alcohol;

[0042] (2) Extrusion of honeycomb structure:...

Embodiment 2

[0047] In this embodiment, a method for preparing a copper / alumina in-situ composite honeycomb material, the specific steps are as follows:

[0048] (1) Homogenous mixing and refining: firstly mix 300 purpose commercially available industrial pure aluminum powder and 500 purpose commercially available industrial copper oxide powder according to the proportion that aluminum powder accounts for 2.3% of the total mass of aluminum powder and copper oxide powder to obtain mixed powder , then the plasticizer and water are uniformly mixed according to the ratio of the plasticizer to 30% of the total mass of the plasticizer and water to obtain a mixture, and finally the mixed powder of aluminum powder, copper oxide powder, plasticizer and water are mixed according to The mixed powder accounts for 82% of the total mass of the mixed powder and the mixed mixture, and the plasticizer is polyvinyl alcohol;

[0049](2) Extrusion of honeycomb structure: put the mixed material prepared in ste...

Embodiment 3

[0054] In this embodiment, a method for preparing a copper / alumina in-situ composite honeycomb material, the specific steps are as follows:

[0055] (1) Homogenous mixing and refining: firstly mix 300 purpose commercially available industrial pure aluminum powder and 500 purpose commercially available industrial copper oxide powder according to the proportion that aluminum powder accounts for 3.1% of the total mass of aluminum powder and copper oxide powder to obtain mixed powder , then the plasticizer and water are uniformly mixed according to the ratio of the plasticizer to 35% of the total mass of the plasticizer and water to obtain a mixture, and finally the mixed powder of aluminum powder, copper oxide powder, plasticizer and water are mixed according to Mixed powder accounts for 84% of the total mass of mixed powder and mixture mixed kneading material, plasticizer is methyl cellulose;

[0056] (2) Extrusion of honeycomb structure: put the mixed material prepared in step ...

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Abstract

The invention discloses a preparation method of a copper / alumina in-situ composite honeycomb material, and belongs to the field of porous composite materials. The preparation method comprises the steps that aluminum powder and copper oxide powder are adopted to be uniformly mixed, a plasticizer and water are then added and mixed, the mixed material is extruded into a honeycomb structure, the extruded honeycomb structure is dried and then reduced and sintered through two steps of vacuum and reducing atmosphere to prepare the copper / alumina in-situ composite honeycomb material. According to thecopper / alumina in-situ composite honeycomb material, the alumina prepared in-situ and a copper matrix are good in interface bonding, the copper / alumina in-situ composite honeycomb material has the characteristics of high-temperature resistance, high strength, high heat conductivity and the like, the production cost is low, and industrial production can be realized.

Description

technical field [0001] The invention relates to a method for preparing a copper / alumina in-situ composite honeycomb material, which belongs to the field of porous composite materials. Background technique [0002] The metal / ceramic composite honeycomb material prepared by powder plastic extrusion method has both the characteristics of metal honeycomb and ceramic honeycomb. It not only has metal properties such as high thermal conductivity and toughness, but also has ceramic properties such as high temperature resistance and thermal shock resistance. It is a new type of multifunctional composite material with excellent comprehensive performance, which has a wide range of applications in the fields of automobile exhaust treatment, high-efficiency heat dissipation materials and aerospace. [0003] However, the conventional powder plastic extrusion method to prepare metal / ceramic composite honeycomb materials has poor compatibility between ceramic particles and metal matrix, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F3/11C22C9/00C22C32/00C22C1/08
CPCC22C9/00C22C32/0021B22F3/001B22F3/1115B22F3/1143B22F2999/00B22F1/10B22F2201/20B22F2201/013
Inventor 张芳杰张磊左孝青周芸罗晓旭
Owner KUNMING UNIV OF SCI & TECH
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