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A method for preparing nanoporous copper

A nanoporous copper and copper sheet technology, applied in the field of metal manufacturing, can solve the problems of being unsuitable for large-scale production, the number of preparation cycles are many, and the preparation process is complicated, and the cost of preparation equipment is low, the process time is shortened, and the complexity is reduced. Effect

Active Publication Date: 2015-09-02
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: provide a kind of method for preparing nanoporous copper, take Cu-Zr(-Al) amorphous alloy material as raw material, at room temperature, carry out free alloying with low-concentration hydrofluoric acid solution Nano-porous copper can be rapidly prepared by chemical treatment, which overcomes the disadvantages of complex preparation process, many preparation cycles, high cost, unfavorable industrialization and unsuitable for large-scale production in the prior art

Method used

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  • A method for preparing nanoporous copper
  • A method for preparing nanoporous copper
  • A method for preparing nanoporous copper

Examples

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Embodiment 1

[0031] The first step is to prepare Cu-Zr alloy ingot

[0032] According to target alloy Cu 原子百分比为50.00% -Zr 原子百分比为50.00% The atomic percentage of each element in the at.% calculates the quality of raw material required, takes by weighing 3.079g of the copper sheet that mass percent purity is 99.99%, the zirconium particle 4.421g that mass percent purity is 99.99%, and the copper sheet and zirconium Then the master alloy raw material was mixed with granules to obtain the master alloy raw material, and then the master alloy raw material was placed in a vacuum electric arc furnace, and 7g of pure zirconium was added and placed independently in the vacuum electric arc furnace as an oxygen-scavenging material without contact with the master alloy raw material that had been put in. Under protection, the smelting current was slowly increased from 30A to 110A, and the smelting was repeated 4 times for 40 seconds each time to ensure the uniformity of the alloy structure. After coolin...

Embodiment 2

[0041] The first step is to prepare Cu-Zr-Al alloy ingot

[0042] According to target alloy Cu 原子百分比为50.00% -Zr 原子百分比为45.00% -Al 原子百分比为5.00% The atomic percentage at.% of each element in the formula is used to calculate the mass of raw materials required. Weigh 3.213g of copper sheet with a mass percentage purity of 99.99%, 4.151g of zirconium with a mass percentage purity of 99.99%, and 0.136 mass percentage of aluminum block with a mass percentage purity of 99.99%. g, and mix the weighed copper sheet, zirconium particles and aluminum blocks to obtain the master alloy raw material, then place the master alloy raw material in a vacuum electric arc furnace, add 7g of pure zirconium and place it independently in the vacuum electric arc furnace as an oxygen scavenging material and Without contact with the master alloy raw material that has been put in, under the protection of argon, the melting current is slowly increased from 30A to 110A, and the melting is repeated 4 times, e...

Embodiment 3

[0052] The first step is to prepare Cu-Zr-Al alloy ingot

[0053] According to target alloy Cu 原子百分比为50.00% -Zr 原子百分比为42.50% -Al 原子百分比为7.50% The atomic percentage at.% of each element in the calculation of the quality of the required raw materials, weigh 3.284g of copper sheet with a mass percentage purity of 99.99%, 4.007g of zirconium with a mass percentage purity of 99.99%, and an aluminum block with a mass percentage purity of 99.99% of 0.209 g, and mix the weighed copper sheet, zirconium particles and aluminum blocks to obtain the master alloy raw material, then place the master alloy raw material in a vacuum electric arc furnace, add 7g of pure zirconium and place it independently in the vacuum electric arc furnace as an oxygen scavenging material and Without contact with the master alloy raw material that has been put in, under the protection of argon, the melting current is slowly increased from 30A to 110A, and the melting is repeated 4 times, each time for 40 secon...

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Abstract

The invention discloses a method for preparing nano-porous copper, which relates to manufacturing for metals with nanoscale porosity. The method comprises the following steps of: calculating the masses of the needed raw materials according to the atomic percent at. % of each element in a target alloy Cu (having an atomic percent of 50.00%)-Zr (having an atomic percent of 42.50-50.00%)(-Al (having the remainder atomic percent)), weighing copper sheets, zirconium grains and aluminium blocks, and mixing to obtain a mother alloy raw material; then smelting the mother alloy raw material in a vacuum arc furnace to prepare a Cu-Zr(-Al) alloy ingot; then preparing a Cu-Zr(-Al) amorphous alloy strip by smelting-spinning equipment; and then preparing a nano-porous metallic copper strip by one-step dealloying, cleaning, and then storing the cleaned nano-porous metallic copper strip in a vacuum chamber having a vacuum degree of 0.1 MPa for the later use, so as to avoid oxidation. With the adoption of the method, the defects of complex preparation process, high cost and inconvenience for industrialized large-scale production of the prior art are overcome.

Description

technical field [0001] The technical solution of the invention relates to the manufacture of metals with nanoscale pores, in particular a method for preparing nanoporous copper. Background technique [0002] In recent years, porous materials have attracted much attention due to their excellent application properties. Among them, nanoporous metal materials exhibit unique physical, chemical and mechanical properties due to their nanoscale pore size, such as unique electromagnetic properties, optical properties, higher chemical activity, and mechanical behaviors that vary with pore size changes. It has great application prospects in the fields of catalysis, sensing, excitation and hydrogen storage. At present, the methods used to prepare nanoporous metal materials mainly include template method, deposition method, powder metallurgy method, dealloying method, etc. Among them, dealloying method has small pore size, controllable nanopore size and shape, and easy operation. The a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/08B22D11/06C23F1/18C22B9/20C22C45/10
Inventor 秦春玲赵维民王志峰刘丽肖同娜
Owner HEBEI UNIV OF TECH
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