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Method for preparing copper-tungsten alloy powder

A technology of copper-tungsten alloy and powder, which is applied in the field of materials science, can solve the problems affecting the performance and application of W-Cu composite materials, poor density of copper-tungsten alloy powder, etc., and achieve the advantages of shortened preparation time, large synthesis amount and small investment Effect

Active Publication Date: 2014-09-10
SHANGHAI INST OF TECH
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Problems solved by technology

[0005] In view of the defects in the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a method for preparing copper-tungsten alloy powder, and the preparation method of this copper-tungsten alloy powder should solve the problem of copper-tungsten alloy powder in the prior art. Alloy powder has poor density, which seriously affects the performance and application of W-Cu composite materials

Method used

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  • Method for preparing copper-tungsten alloy powder
  • Method for preparing copper-tungsten alloy powder
  • Method for preparing copper-tungsten alloy powder

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Embodiment

[0024] With 95ml of 0.01mol / L sodium tungstate solution as anolyte, 90ml of 0.01mol / L hydrochloric acid solution as catholyte, copper sheet as anode and titanium mesh as cathode, electrolyze 306S at a constant current of 0.6A (electrolysis time is based on Na + The theoretical electricity consumed by all the ions transferred to the cathode chamber is calculated, that is, ), to obtain electrolysis products.

[0025] The anode product obtained by electrolysis was washed three times with deionized water, and then dried in a blast drying oven at a constant temperature of 60° C. for 2 hours to obtain a pure copper-tungsten precursor compound.

[0026] Put the copper-tungsten precursor compound into a tube furnace and reduce it at 400°C for 2 hours at a heating rate of 2.5°C / min in a hydrogen atmosphere, and then reduce it at 700°C for 5 hours to obtain copper-tungsten alloy powder. The obtained copper-tungsten alloy powder test XRD analysis results are as follows: figure 2 , E...

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Abstract

The invention relates to a method for preparing copper-tungsten alloy powder. According to the method, a copper sheet is used as an anode, a noble electrode is used as a cathode, sodium tungstate solution is used as anodic solution, solution with pH ranging from 0 to 14 is used as cathodic solution, electrolyzation is performed under the constant current 1-100mA / cm<2> or constant voltage 10-300V, the sodium tungstate solution is electrolyzed with a cation membrane, a product obtained is cleaned and dried so as to obtain copper-tungsten compound precursor, and the copper-tungsten compound precursor is subjected to high temperature reduction in the hydrogen atmosphere so as to obtain copper-tungsten alloy powder. The method has the advantages that the uniformity problem of the copper-tungsten alloy powder is solved, preparation time, especially that of the precursor, is greatly shortened, and the copper-tungsten alloy powder obtained is pure.

Description

technical field [0001] The invention belongs to the field of materials science, and in particular relates to a copper-tungsten alloy, specifically a method for preparing copper-tungsten alloy powder. Background technique [0002] W-Cu composite materials are widely used in electrical contactors, vacuum circuit breakers, In functional and structural devices such as heat sink materials. At the same time, the W-Cu functional composite material has excellent comprehensive properties such as high melting point, low thermal expansion coefficient, low sputtering rate of tungsten and high electrical and thermal conductivity of copper, and is considered to be the most promising nuclear fusion surface plasma. Material. And the particularity can be used in military materials (such as rocket nozzles, aircraft throat linings), field launch, kinetic energy armor-piercing projectiles, as well as computer central processing systems, lead frames for large-scale integrated circuits, etc. ...

Claims

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Application Information

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IPC IPC(8): B22F9/22C25B1/00
Inventor 张全生闵凡奇党国举李硕李细方王淼王昭勍李海燕
Owner SHANGHAI INST OF TECH
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