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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: 2012-10-17
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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Experimental program
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Effect test

Embodiment 1

[0041](1) Superfine / nanocrystalline W-70Cu composite powder was prepared by a two-step hot hydrogen reduction method of mixed solution-atomization drying-calcination-high energy ball milling-(low temperature + high temperature); weigh 275g of copper sulfate crystals (CuSO 4 ·5H 2 O), 43g ammonium metatungstate crystal {(NH4) 6 h 2 W 12 o 40 ·H 2 O}, 3g yttrium nitrate {Y(NO 3 ) 3 ·6H 2 0}, 3g Polyethylene Glycol, be dissolved in 1200ml deionized water, be mixed with the solution that concentration is 35%, and add concentration and be that the nitric acid solution of 25% regulates above-mentioned solution pH value to be 3, and leave standstill 20min, obtain stable Mixed dissolved salt solution; atomized and dried the mixed dissolved salt solution at a temperature of 250°C, a feed flow rate of 150ml / L, and a nozzle rotation speed of 22000r / min. The tungsten-copper oxide mixed powder precursor was obtained, and then the powder precursor was calcined in the air. The calcin...

Embodiment 2

[0044] (1) Prepare superfine / nano W-80Cu composite powder by using mixed solution-atomization drying-calcination-high energy ball milling-(low temperature + high temperature) two-step hot hydrogen reduction method; weigh 606g of 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 triethanolamine, be dissolved in 1000ml deionized water, be mixed with the solution that concentration is 40%, adding the nitric acid solution that concentration is 25% adjusts above-mentioned solution pH value to be 4, and leave standstill 30min, obtain stable mixed dissolved salt Solution; spray and dry the dissolved salt solution at a temperature of 280°C, a feed flow rate of 180ml / L, and a nozzle rotation speed of 23000r / min. The tungsten-copper oxide mixed powder precursor is obtained, and then the powder precursor is calcined in the air. The calcination temperature is divided into ...

Embodiment 3

[0047] (1) Superfine / nano W-90Cu composite powder was prepared by a two-step hot hydrogen reduction method of mixed solution-atomization drying-calcination-high energy ball milling-(low temperature + high temperature); weighed 241.6g 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 triethanolamine, be dissolved in 1000ml deionized water, be mixed with the solution that concentration is 30%, add the nitric acid solution that concentration is 25% and adjust above-mentioned solution pH value to be 3, and leave standstill 30min, obtain stable mixed dissolved salt Solution: spray and dry the dissolved salt solution at a temperature of 220°C, a feed flow rate of 130ml / L, and a nozzle rotation speed of 21000r / min. The tungsten-copper oxide mixed powder precursor is obtained, and then the powder precursor is calcined in the air. The calcination temperature is divided int...

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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 fields of nanomaterials and powder metallurgy, in particular to a fine-grained tungsten-copper composite material with high copper content prepared by nanotechnology and a preparation method thereof. Background technique: [0002] The W-Cu composite material composed of W and Cu has the advantages of both W and Cu, that is, it has the advantages of high density, high sound velocity, high thermal conductivity, and improved ductility before jet fracture. High-performance armor-piercing warheads such as large / deep aperture openings and penetrations have good application prospects, which can significantly improve the crushability, penetration capability, and permeability of the liner. At the same time, the W-Cu liner jet is It can be fully elongated before the penetration, so as to obtain high-efficiency armor-piercing performance. Traditional W-Cu composite materials adopt mechanical alloying + high temperature liquid phase ...

Claims

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Application Information

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Patent Type & Authority Applications(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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