Preparation method of foamy copper powder

A technology of copper powder and foam, which is applied in the field of metal foam materials, can solve the problems of insufficient compressive tensile strength of foam copper, and achieve the effects of high rigidity, high compressive strength and low gas residue

Inactive Publication Date: 2019-05-21
乐山创新智谷工业设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The existing copper foam is mainly formed by the powder alloy method, and a pore-forming agent is added to it. This copper foam has insufficient compressive and tensile strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0025] Specific embodiment 1: a kind of preparation method of foamed copper powder, the steps are as follows: select suitable copper oxide particles, and mix, and described copper oxide particles are more than 40 orders; Add pore-forming in the above-mentioned mixed copper oxide particles agent, the pore forming agent is calcium carbonate, and the pore forming agent accounts for 30%; the above mixture is put into a reduction sintering furnace for reduction sintering to obtain sintered copper, and the porosity of the sintered copper is 50%-80% %; the reduction and sintering temperature is 800°C-1000°C, and the reducing gas is carbon monoxide; the above-mentioned sintered copper is ball milled with a ball mill, and sieved with different screens to obtain foamed copper powder with different particle sizes. The purpose of foamed copper powder The number is between 20 mesh and 200 mesh.

specific Embodiment 2

[0026] Specific embodiment 2: a kind of preparation method of foamed copper powder, the steps are as follows: select suitable copper oxide particles, and mix, and described copper oxide particles are more than 40 orders; Add pore-forming in the above-mentioned mixed copper oxide particles agent, the pore-forming agent is magnesium carbonate, and the pore-forming agent accounts for 30%; the above-mentioned mixture is put into a reduction sintering furnace for reduction sintering to obtain sintered copper, and the porosity of the sintered copper is 50%-80% %; the reduction and sintering temperature is 800°C-1000°C, and the reducing gas is carbon monoxide; the above-mentioned sintered copper is ball milled with a ball mill, and sieved with different screens to obtain foamed copper powder with different particle sizes. The purpose of foamed copper powder The number is between 20 mesh and 200 mesh.

specific Embodiment 3

[0027] Specific embodiment 3: a kind of preparation method of foamed copper powder, the steps are as follows: select suitable copper oxide particles, and mix, and described copper oxide particles are more than 40 orders; Add pore-forming in the above-mentioned mixed copper oxide particles agent, the pore-forming agent is silicon carbide, and the pore-forming agent accounts for 30%; the above-mentioned mixture is put into a reduction sintering furnace for reduction sintering to obtain sintered copper, and the porosity of the sintered copper is 50%-80% %; the reduction and sintering temperature is 800°C-1000°C, and the reducing gas is carbon monoxide; the above-mentioned sintered copper is ball milled with a ball mill, and sieved with different screens to obtain foamed copper powder with different particle sizes. The purpose of foamed copper powder The number is between 20 mesh and 200 mesh.

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Abstract

The invention discloses a preparation method of foamy copper powder, and belongs to the field of foamy copper. The preparation method comprises the following steps that proper copper oxide particles are selected and mixed, wherein the particle size of the copper oxide particles is 40 meshes or over; a pore former is added into the mixed copper oxide particles, wherein the pore former is calcium carbonate, and the proportion of the pore former is 30%; a mixture is placed into a reduction sintering furnace to be subjected to reduction sintering, so that sintered copper is prepared, wherein the porosity of the sintered copper is 50%-80%, and the reduction sintering temperature is 800-1000 DEG C, and reduction gas is carbon monoxide; and the sintered copper is ball-milled through a ball mill and is screened through different screens, so that foamy copper powder with different particle sizes is prepared, wherein the number of meshes of the foamy copper powder is 20-200.

Description

technical field [0001] The invention relates to the field of foam metal materials. Background technique [0002] Copper foam is a new multifunctional material with a large number of connected or disconnected pores evenly distributed in the copper matrix. Copper foam has good conductivity and ductility, and its preparation cost is lower than that of nickel foam, and its conductivity is better. It can be used to prepare battery negative electrode (carrier) materials, catalyst carriers and electromagnetic shielding materials. In particular, copper foam is used as a base material for batteries as electrodes, which has some obvious advantages. [0003] Copper foam is a new type of functional material which is mainly used in the following fields: [0004] (1) Electrode material. Excellent electrical conductivity makes copper foam widely used as electrode skeleton material for new batteries such as nickel-zinc batteries and electric double-layer capacitors. At present, copper fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F9/04B22F3/11
Inventor 李婵娟
Owner 乐山创新智谷工业设计有限公司
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