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W-Cu composite material with high Cu content and preparation method of W-Cu composite material

A composite material and content technology, applied in the field of nanomaterials, can solve the problems of composite powder, material uniformity and compactness, the difficulty of sintering process, and the difficulty of meeting the requirements of high-performance drug-type covers, etc., to achieve good heat conduction performance, reduction of pores and channels, reduction of distortion and effects of tissue inhomogeneity

Inactive Publication Date: 2014-01-01
NO 59 RES INST OF CHINA ORDNANCE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] When the mass fraction of Cu in the W-Cu composite powder is high (greater than 50wt%), Cu segregation is easy to occur, and the uniformity and compactness of the composite powder and material are difficult to ensure, making it difficult to control the uniformity of the structure and the density of the alloy. The sintering process is more difficult, and it is difficult to meet the requirements for the use of high-performance liners

Method used

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  • W-Cu composite material with high Cu content and preparation method of W-Cu composite material

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Effect test

Embodiment 1

[0041] (1) The ultrafine / nanocrystalline W-70Cu composite powder is prepared by the two-step thermal hydrogen reduction method of mixed solution-atomization drying-calcination-high energy ball milling-(low temperature + high temperature); weigh 275g copper sulfate crystal (CuSO 4 ·5H 2 O), 43g ammonium metatungstate crystals {(NH4) 6 H 2 W 12 O 40 ·H 2 O}, 3g yttrium nitrate {Y(NO 3 ) 3 ·6H 2 O}, 3g polyethylene glycol, dissolved in 1200ml deionized water to prepare a solution with a concentration of 35%, and add a 25% nitric acid solution to adjust the pH of the above solution to 3, and let it stand for 20 minutes to obtain a stable Mixed salt solution; the mixed salt solution is atomized and dried, and the temperature is 250°C, the feed flow rate is 150ml / L, and the nozzle rotation speed is 22000r / min. Obtain the tungsten copper oxide mixed powder precursor, and then calcinate the powder precursor in the air. The calcining temperature is divided into two stages: low temperature...

Embodiment 2

[0044] (1) Prepare ultra-fine / nano W-80Cu composite powder by the two-step thermal hydrogen reduction method of mixed solution-atomization drying-calcination-high energy ball milling-(low temperature + high temperature); weigh 606g copper nitrate crystal {Cu(NO 3 ) 2 ·3H 2 O}, 54.8g ammonium metatungstate crystal {(NH4) 6 H 2 W 12 O 40 ·H 2 O}, 2g cerium nitrate {Ce(NO 3 ) 3 ·6H 2 O}, 3g of triethanolamine, dissolved in 1000ml of deionized water to prepare a solution with a concentration of 40%, add 25% nitric acid solution to adjust the pH of the above solution to 4, and stand for 30 minutes to obtain a stable mixed dissolved salt Solution: The dissolved salt solution is atomized and dried, the temperature is 280°C, the feed flow rate is 180ml / L, and the nozzle rotation speed is 23000r / min. The tungsten-copper oxide mixed powder precursor is obtained, and the powder precursor is calcined in the air. The calcining temperature is divided into two stages: low temperature 300℃+ high...

Embodiment 3

[0047] (1) The ultrafine / nano W-90Cu composite powder is prepared by the two-step thermal hydrogen reduction method of mixed solution-atomization drying-calcination-high energy ball milling-(low temperature + high temperature); weigh 241.6g of copper chloride crystal (CuCl 2 ·2H 2 O}, 14.5g ammonium metatungstate crystal {(NH4) 6 H 2 W 12 O 40 ·H 2 O}, 3g lanthanum nitrate {La(NO 3 ) 3 ·6H 2 O}, 6g of triethanolamine, dissolved in 1000ml of deionized water to prepare a solution with a concentration of 30%, add 25% nitric acid solution to adjust the pH of the above solution to 3, and stand for 30 minutes to obtain a stable mixed dissolved salt Solution: The dissolved salt solution is atomized and dried, the temperature is 220°C, the feed flow rate is 130ml / L, and the nozzle rotation speed is 21000r / min. The tungsten copper oxide mixed powder precursor is obtained, and the powder precursor is calcined in the air. The calcining temperature is divided into two stages of low temperatu...

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Abstract

The invention relates to a W-Cu composite material with high Cu content and the preparation method of the W-Cu composite material. The W-Cu composite material is characterized in that due to the improvement of raw materials and a technology, the prepared composite material has high Cu content reaching up to more than 70% and has the characteristics of uniform structure and high compactness.

Description

Technical field: [0001] The invention relates to the field of nanomaterials and powder metallurgy, in particular to a fine-crystalline tungsten copper composite material with high copper content prepared by using nanotechnology and a preparation method thereof. Background technique: [0002] The W-Cu composite material composed of W and Cu has the advantages of W and Cu, that is, it has the advantages of high density, high sound velocity, high thermal conductivity, and improved ductility before jet fracture. The large / deep aperture pit penetration and other high-performance armor-piercing warheads have good application prospects, which can significantly improve the crushability, penetration ability, and permeability of the drug type cover. At the same time, the W-Cu drug type cover jet is invading. Toru can be fully stretched before, so as to obtain high-performance armor-piercing performance. Traditional W-Cu composite materials adopt mechanical alloying + high-temperature liqu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C1/04
Inventor 陈强舒大禹胡传凯林军宁海青赵祖德
Owner NO 59 RES INST OF CHINA ORDNANCE IND
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