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Porous foam copper

A technology of porous foam and copper powder, which is applied in the field of foamed copper, can solve the problems of insufficient compressive tensile strength of foamed 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

[0027] Specific embodiment 1: a kind of preparation method of porous copper foam, the steps are as follows:

[0028] Step 1, sodium carbonate is carried out decrystallization water, and carry out sieving;

[0029] Step 2, obtaining high-purity copper prepared by vacuum melting, and ball milling with a ball mill, and sieving;

[0030] Step 3, put the sieved sodium carbonate and high-purity copper powder into the foaming agent, and add them to the pressing mold to press to obtain a green body;

[0031] Step 4, sintering the above-mentioned green body in an inert atmosphere in a sintering furnace to obtain sintered copper;

[0032] Step 5: Mill the above-mentioned sintered copper in a ball mill to obtain foamed copper powder.

[0033] Sodium carbonate particles between 40 mesh and 200 mesh are selected after sodium carbonate screening, and copper powder between 40 mesh and 200 mesh is selected after high-purity copper screening. The mass ratio of the sodium carbonate to the hi...

specific Embodiment 2

[0034] Specific embodiment 2: a kind of preparation method of porous copper foam, the steps are as follows:

[0035] Step 1, sodium carbonate is carried out decrystallization water, and carry out sieving;

[0036] Step 2, obtaining high-purity copper prepared by vacuum melting, and ball milling with a ball mill, and sieving;

[0037] Step 3, put the sieved sodium carbonate and high-purity copper powder into the foaming agent, and add them to the pressing mold to press to obtain a green body;

[0038] Step 4, sintering the above-mentioned green body in an inert atmosphere in a sintering furnace to obtain sintered copper;

[0039] Step 5: Mill the above-mentioned sintered copper in a ball mill to obtain foamed copper powder.

[0040] Sodium carbonate particles between 40 mesh and 200 mesh are selected after sodium carbonate screening, and copper powder between 40 mesh and 200 mesh is selected after high-purity copper screening. The mass ratio of the sodium carbonate to the hi...

specific Embodiment 3

[0041] Specific embodiment 3: a kind of preparation method of porous copper foam, the steps are as follows:

[0042] Step 1, sodium carbonate is carried out decrystallization water, and carry out sieving;

[0043] Step 2, obtaining high-purity copper prepared by vacuum melting, and ball milling with a ball mill, and sieving;

[0044] Step 3, put the sieved sodium carbonate and high-purity copper powder into the foaming agent, and add them to the pressing mold to press to obtain a green body;

[0045] Step 4, sintering the above-mentioned green body in an inert atmosphere in a sintering furnace to obtain sintered copper;

[0046] Step 5: Mill the above-mentioned sintered copper in a ball mill to obtain foamed copper powder.

[0047] Sodium carbonate particles between 40 mesh and 200 mesh are selected after sodium carbonate screening, and copper powder between 40 mesh and 200 mesh is selected after high-purity copper screening. The mass ratio of the sodium carbonate to the hi...

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Abstract

The invention discloses porous foam copper, and belongs to the field of metal. A preparation method for porous foam copper comprises the following steps: step I, removing crystal water of sodium carbonate, and screening; step II, obtaining high-purity copper prepared by vacuum melting, using a ball mill to perform ball-milling, and screening; step III, adding sieved sodium carbonate and high-purity copper powder into a foaming agent to obtain a mixture, adding the mixture into a pressing mould to press to prepare raw blank; step IV, sintering the raw blank in an inert atmosphere in a sinteringfurnace to sinter to obtain sintered copper; and step V, ball-milling the sintered copper in the ball mill to prepare foam copper powder.

Description

technical field [0001] The invention relates to the field of copper foam. 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 foam has be...

Claims

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Application Information

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