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Method for preparing monocrystal metal foil

A technology of metal foil and polycrystalline metal, which is applied in the field of preparing single crystal metal foil, can solve the problems of tediousness, high energy consumption, and high difficulty, and achieve the effects of strong universality, low energy consumption, and low cost

Active Publication Date: 2018-12-07
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In view of this, the object of the present invention is to provide a method for preparing single-crystal metal foil, which can be applied to various metal material systems, and can be simple, Efficiently produce large-area single-crystal metal foils, especially copper foils

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  • Method for preparing monocrystal metal foil
  • Method for preparing monocrystal metal foil
  • Method for preparing monocrystal metal foil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] This example is used to illustrate the preparation of single crystal copper foil from polycrystalline copper foil.

[0049] 1. Cut the copper foil with a purity of 99.99% purchased from Aluminum Corporation of China into strips with a width of about 2 cm, a length of about 15 cm, and a thickness of 20 microns.

[0050] 2. Put the strip-shaped copper foil that has been cut into the metal thermal evaporation system purchased from Beijing Micro-Nano Vacuum Technology Co., Ltd., model VZB-400, and sandwich it between two copper metal electrodes, so that The copper foil is set vertically, and the vacuum is evacuated to 5×10 by mechanical pump and molecular pump -5 Pa.

[0051] 3. Heat the two electrodes until the central temperature of the strip-shaped copper foil is 1025±5°C, and keep it for 8 hours, wherein the heating rate is 8°C / min.

[0052] 4. Cool down to room temperature at a rate of 8°C / min.

[0053] Adopt XRD to characterize the untreated polycrystalline copper ...

Embodiment 2

[0057] This example is used to illustrate the preparation of single crystal nickel foil from polycrystalline nickel foil.

[0058] 1. The nickel foil with a purity of 99.9% purchased from Aluminum Corporation of China was cut into strips with a width of about 1 cm, a length of about 15 cm, and a thickness of 10 microns.

[0059] 2. Put the strip-shaped nickel foil that has been cut into the metal thermal evaporation system of the model VZB-400 purchased from Beijing Micro-Nano Vacuum Technology Co., Ltd., and sandwich it between two nickel metal electrodes , so that the nickel foil is vertically set, vacuumed to 5×10 by mechanical pump and molecular pump -5 Pa.

[0060] 3. Heat the two electrodes until the central temperature of the strip-shaped nickel foil is 1375±5°C, and keep it for 10 hours, wherein the heating rate is 12°C / min.

[0061] 4. Cool down to room temperature at a rate of 12°C / min.

[0062] The untreated polycrystalline nickel foil prepared in step (1) and th...

Embodiment 3

[0065] This example is used to illustrate the preparation of single crystal ruthenium foil from polycrystalline ruthenium foil.

[0066] 1. Cut ruthenium foil with a purity of 99.99% purchased from Aluminum Corporation of China into strips with a width of about 3 cm, a length of about 30 cm, and a thickness of 50 microns.

[0067] 2. Put the cut strip-shaped ruthenium foil into a vertical tube furnace of model OTF-1200X-S-VT purchased from Hefei Kejing, place the ruthenium foil vertically, and feed hydrogen and argon A hydrogen-argon mixture with a gas volume ratio of 1:9 was used as the protective gas.

[0068] 3. Raise the temperature to 2260±5°C and keep it for 10 hours, wherein the heating rate is 12°C / min.

[0069] 4. Cool down to room temperature at a rate of 12°C / min.

[0070] The untreated polycrystalline ruthenium foil prepared in step (1) and the treated ruthenium foil prepared in Example 3 were characterized by XRD. The results show that the treated ruthenium foi...

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Abstract

The invention relates to a method for preparing monocrystal metal foil. The method comprises the following steps: (1) placing polycrystal metal foil with a purity of 99.9 wt% or above basically vertically in a heating device, carrying out heating to a temperature which is 10-100 DEG C below the melting point under a vacuum or a protective atmosphere for annealing treatment; and (2) carrying out cooling so as to prepare the monocrystal metal foil. The method provided by the invention is high in universality, can be used for various metal material systems, and can be used to prepare large-area monocrystal metal foil simply and efficiently. Meanwhile, cost is low, energy consumption is low, and the prepared monocrystal metal foil is high in quality and uniform in morphology.

Description

technical field [0001] The invention relates to a method for preparing single crystal metal foil. Background technique [0002] Most of the metal materials used in daily life are alloy materials, and are usually polycrystalline or amorphous metal materials. Compared with conventional polycrystalline or amorphous metal materials, single crystal metal materials (metal single crystals) have more special physical properties, such as better electrical and thermal conductivity, more excellent flexibility and ductility, so metal single crystals It is widely used in many high-tech scientific research fields and some special environments. [0003] For example, metal single crystals can be used as growth substrates to prepare special nanostructures and nanomaterials due to their high electrical and thermal conductivity. Compared with polycrystalline metal materials, metal single crystals have better shape. Generally speaking, without the influence of impurity elements, single cryst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/02C30B1/02
CPCC30B1/02C30B29/02
Inventor 黄元
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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