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Method for manufacturing nickel-cuprum metallic baseband layer of highly oriented double-shaft texture

A technology of copper metal and base belt layer, applied in the field of preparation of metal base belt layer, can solve the problems of unfavorable large-scale production, complicated rolling process, high heat treatment temperature, and achieves good reproducibility and repeatability, low cost, and preparation process. simple effect

Inactive Publication Date: 2010-10-06
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it also has obvious disadvantages at the same time: the rolling process is complicated, special rolling equipment is required, the equipment investment is huge, and the cost is high; the heat treatment temperature is high and the energy consumption is high; it is not conducive to industrialized large-scale production

Method used

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  • Method for manufacturing nickel-cuprum metallic baseband layer of highly oriented double-shaft texture
  • Method for manufacturing nickel-cuprum metallic baseband layer of highly oriented double-shaft texture
  • Method for manufacturing nickel-cuprum metallic baseband layer of highly oriented double-shaft texture

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Experimental program
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Effect test

specific Embodiment approach

[0024] A kind of specific embodiment of the present invention is:

[0025] First put the copper sheet into acetone or absolute ethanol for 45 minutes of ultrasonic cleaning.

[0026] a. Annealing: put the copper sheet cleaned in step a into a tube furnace, and feed a hydrogen-argon mixed gas composed of 5% hydrogen and 95% argon by volume, and increase the temperature at a rate of 190°C / h to 600°C, keep warm for 2 hours, then cool naturally.

[0027] After annealing, the polished copper sheet is cleaned in 5% dilute hydrochloric acid to remove oxide impurities on the surface.

[0028] b. Polishing: Mix 20g / L of chromium trioxide, 950ml / L of 85% phosphoric acid, and 50ml / L of 97% sulfuric acid to prepare a polishing solution; then use the annealed copper sheet as the anode and the aluminum sheet in the polishing solution As the cathode, electrochemical polishing was carried out with a current of 300mA for 4 minutes.

[0029] c. Electroplating: According to the ratio of nicke...

Embodiment 2

[0031] This example is basically the same as Example 1, the difference is only:

[0032] Ultrasonic cleaning time is 30 minutes; during annealing, the temperature is raised to 590°C at a rate of 100°C / h and kept for 1.5 hours; the copper sheet is cleaned in 3% dilute hydrochloric acid; chromium trioxide 18g / L, 85% phosphoric acid 940ml / L, 95% sulfuric acid 40ml / L ratio with polishing liquid, polishing current 200mA; polishing time 2 minutes; according to nickel sulfate is 95g / L, nickel chloride is 8g / L, boric acid is 25g / L, dissolved in deionized water A solution is formed, an electroplating solution is prepared, the electroplating time is 5 minutes, and the current is 10mA, and a nickel plating layer with a thickness of about 1 μm can be formed on the surface of the base copper sheet.

Embodiment 3

[0034] This example is basically the same as Example 1, the difference is only:

[0035] Ultrasonic cleaning time is 60 minutes; during annealing, the temperature is raised to 610°C at a rate of 200°C / h and kept for 2.5 hours; the copper sheet is cleaned in 8% dilute hydrochloric acid; L, the proportion of 98% sulfuric acid 60ml / L with polishing fluid, polishing current 400mA; polishing time 5 minutes; according to nickel sulfate is 110g / L, nickel chloride is 15g / L, boric acid is 30g / L, dissolved in deionized water The electroplating solution is prepared, the electroplating time is 15 minutes, and the current is 50mA, and a nickel plating layer with a thickness of about 10.3 μm can be formed on the surface of the base copper sheet.

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Abstract

The invention relates to a method for preparing a nickel-copper metal substrate layer of strong oriented biaxial texture, which concretely comprises following steps: firstly, annealing, arranging a copper sheet in a tube furnace, inputting mixed gas of hydrogen and argon, heating to 590-610DEG C, preserving heat for about 2 hours, naturally cooling, secondly, polishing, mixing polishing slurry according to chromium trioxide 18-23g / L, phosphoric acid 85% 940-960ml / L and sulphuric acid 95-98% 40-60ml / L, taking the copper sheet which is annealed in the polishing slurry as an anode, taking an aluminium sheet as a cathode, polishing for 2-5 minutes with current flow of 200-400mA, thirdly, electroplating, preparing electroplating solution of deionized water solution according to nickel sulfate 95-110g / L, nickel chloride 8-15g / L and boric acid 25-30g / L, taking the copper sheet which is polished as the cathode, and taking a nickel sheet as the anode to electroplate for 5-15 minutes, wherein the current flow is 10-50mA. The method has simple manufacturing process, simple equipment, low cost, easy operation and control, the thickness and the phase orientation of a plating layer can be extremely easily controlled, the method is easy in large scale preparation production, the method is environmental friendly and does not generate contaminant which is harmful to environment, and the methodis energy-saving.

Description

technical field [0001] The invention relates to a method for preparing a metal base belt layer with biaxial texture preferential orientation. Background technique [0002] The second-generation high-temperature superconductor—yttrium barium copper oxide (YBCO) superconducting coated conductor has become the focus of research and development in various countries. The superconducting coated conductor is composed of a metal base layer, a transition layer (transition layer or buffer layer), and a superconducting layer. Among them, the metal baseband layer is the substrate of the superconducting coating conductor, and the orientation of its crystal structure is required to be mainly concentrated in the (200) direction, that is, it has a biaxial texture with a strong orientation, so that the biaxial texture can be grown on it. texture transition layer, and then deposit the same biaxial texture superconducting layer on the transition layer. Therefore, preparing a base layer with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F17/00C22F1/08C25F3/22C25D3/12B08B3/12
Inventor 郑果蒲明华刘见芬赵勇王贺龙
Owner SOUTHWEST JIAOTONG UNIV