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Preparation method of WCu composite powder with tungsten coating copper

A composite powder and copper-clad technology, applied in coatings and other directions, can solve problems such as no progress in research, and achieve the effects of small particles, simple process and easy operation, and improved recovery rate.

Inactive Publication Date: 2014-01-29
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for the use of hydrothermal method to obtain CuWO 4 Nanoparticle, tungsten-coated WCu composite powders obtained with good interfacial bonding during subsequent hydrogen reduction did not see any progress

Method used

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  • Preparation method of WCu composite powder with tungsten coating copper
  • Preparation method of WCu composite powder with tungsten coating copper
  • Preparation method of WCu composite powder with tungsten coating copper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method of WCu composite powder with tungsten-coated copper phenomenon adopts the following production steps:

[0025] Step 1. Weigh sodium tungstate dihydrate and copper nitrate trihydrate according to the atomic concentration ratio of W and Cu as 1:1, prepare them into solutions with a concentration of 0.8mol / L respectively, and add them to the obtained copper nitrate trihydrate solution Add ammonia water and make it fully mixed at 30°C to generate sufficient copper complex ions in the solution, then add the prepared sodium tungstate dihydrate solution, and then add nitric acid to adjust the pH value of the mixed solution to 5.2- 6.2, and fully stir in a magnetic stirrer for 2 hours before use;

[0026] Step 2. Put the mixed solution obtained in step 1 into a stainless steel reactor. The amount of the mixed solution is 80% of the volume of the stainless steel reactor. After reacting at a temperature of 150° C. for 48 hours, the furnace is cooled to room t...

Embodiment 2

[0031] A preparation method of WCu composite powder with tungsten-coated copper phenomenon adopts the following production steps:

[0032] Step 1. Weigh sodium tungstate dihydrate and copper nitrate trihydrate according to the atomic concentration ratio of W and Cu as 1:1, prepare them into solutions with a concentration of 0.8mol / L respectively, and add them to the obtained copper nitrate trihydrate solution Add ammonia water and make it fully mixed at 30°C to generate sufficient copper complex ions in the solution, then add the prepared sodium tungstate dihydrate solution, and then add nitric acid to adjust the pH value of the mixed solution to 5.2- 6.2, and fully stir in a magnetic stirrer for 4 hours before use;

[0033] Step 2. Put the mixed solution obtained in step 1 into a stainless steel reactor. The amount of the mixed solution is 80% of the volume of the stainless steel reactor. After reacting at a temperature of 170° C. for 35 hours, the furnace is cooled to room t...

Embodiment 3

[0038] A preparation method of WCu composite powder with tungsten-coated copper phenomenon adopts the following preparation steps:

[0039] Step 1. Weigh sodium tungstate dihydrate and copper nitrate trihydrate according to the atomic concentration ratio of W and Cu as 1:1, prepare them into solutions with a concentration of 0.8mol / L respectively, and add them to the obtained copper nitrate trihydrate solution Add ammonia water and make it fully mixed at 30°C to generate sufficient copper complex ions in the solution, then add the prepared sodium tungstate dihydrate solution, and then add nitric acid to adjust the pH value of the mixed solution to 5.2- 6.2, and fully stir in a magnetic stirrer for 5 hours before use;

[0040] Step 2. Put the mixed solution obtained in step 1 into a stainless steel reactor. The amount of the mixed solution is 80% of the volume of the stainless steel reactor. After reacting at a temperature of 180° C. for 24 hours, the furnace is cooled to room ...

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Abstract

The invention relates to the filed of WCu composite powder preparation, in particular to a preparation method of WCu composite powder with tungsten coating copper. The preparation method includes: selecting sodium tungstate dihydrate and copper nitrate trihydrate according to the atomic concentration of 1:1 as raw materials to prepare corresponding solution, adding ammonia water to the obtained copper nitrate trihydrate solution to allow sufficient copper complex ions to be generated in the solution, adjusting pH of the solution and filling the solution to a stainless steel reaction kettle to prepare CuWO4 nano particles, and performing staged reduction to obtain the WCu composite powder. Compared with the traditional preparation methods of tungsten copper oxide, the preparation method has the advantages that sufficient copper complex ions are generated in the solution by adding ammonia water to the copper nitrate solution, and accordingly recycling rate of Cu is increased, the WCu composite power with tungsten coating copper and good interface combination is generated in subsequent hydrogen reduction of the obtained CuWO4, and the prepared WCu composite powder is well mixed, fine in particle and high in purity.

Description

technical field [0001] The invention relates to the field of preparation of WCu composite powder, in particular to a preparation method of WCu composite powder with tungsten-coated copper phenomenon. Background technique [0002] Tungsten-copper composite material is a pseudo-alloy composed of high-melting point, high-hardness tungsten and high-conductivity and thermal-conductivity copper. After a good combination of high-conductivity copper and tungsten with strong arc corrosion resistance, it is very suitable for making Electrical contacts, electrodes and other components; and the good combination of low expansion coefficient tungsten and high-conductivity copper can also be applied to heat-sink substrates for CPU, IC, solid-state microwave tubes, radio communication devices and other airtight packages, high thermal conductivity copper and The good combination of high-temperature strength tungsten is used in ultra-high-voltage electrical contact materials, nozzle throat li...

Claims

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Application Information

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IPC IPC(8): B22F1/02B22F9/22
Inventor 谢敬佩马窦琴刘舒王凤梅李继文王爱琴王文焱李洛利宋亚虎孙浩亮王维
Owner HENAN UNIV OF SCI & TECH
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