Preparation method of novel tungsten-copper-zinc alloy material

A technology of zinc alloy and tungsten copper, which is applied in the field of metallurgy, can solve the problems of low strength and hardness, and achieve the effects of low thermal expansion coefficient, high thermal conductivity and high electrical conductivity

Inactive Publication Date: 2012-06-13
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of low strength and hardness of tungsten-copper composite materials, and provide a tungsten-copper-zinc alloy composite material with high strength and high hardness and a preparation method thereof which has the advantages of both tungsten and copper

Method used

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  • Preparation method of novel tungsten-copper-zinc alloy material
  • Preparation method of novel tungsten-copper-zinc alloy material

Examples

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Embodiment 1

[0020] A tungsten-copper-zinc alloy material, comprising the following components and contents (percentage by weight): 80% tungsten, 59% copper and 41% zinc in a brass binder phase. The preparation method includes the following steps:

[0021] Step 1: Select tungsten powder, copper powder and zinc powder with an average particle size of 2-4 μm, use a "V" type mixer to mix for 24 hours, and then use hydrogen for reduction to obtain a mixture of three metal powders with a purity of more than 95%. .

[0022] Step 2, put the mixed powder into graphite mold, and carry out vacuum sintering in spark plasma sintering equipment. The sintering process uses a sintering temperature of 800°C, a heating rate of 50°C / min, and a holding time of 5 minutes for solid-state sintering.

[0023] Step 3: Continue to heat-treat the tungsten-copper-zinc alloy material prepared by sintering in the spark plasma sintering equipment. The heat treatment temperature is 600°C, the holding time is 3h, and th...

Embodiment 2

[0025] A tungsten-copper-zinc alloy material, comprising the following components and contents (percentage by weight): 80% tungsten, 68% copper and 32% zinc in the brass binder phase. The preparation process includes the following steps:

[0026] Step 1: Select tungsten powder, copper powder and zinc powder with an average particle size of 2-4 μm, use a "V" type mixer to mix for 24 hours, and then use hydrogen for reduction to obtain a mixture of three metal powders with a purity of more than 95%. .

[0027] Step 2, put the mixed powder into graphite mold, and carry out vacuum sintering in spark plasma sintering equipment. The sintering process uses a sintering temperature of 800°C, a heating rate of 50°C / min, and a holding time of 5 minutes for solid-state sintering.

[0028] Step 3: Continue to heat-treat the tungsten-copper-zinc alloy material prepared by sintering in the spark plasma sintering equipment. The heat treatment temperature is 600°C, the holding time is 3h, and...

Embodiment 3

[0030] A tungsten-copper-zinc alloy material, comprising the following components and contents (percentage by weight): 80% tungsten, 59% copper and 41% zinc in a brass binder phase. The preparation method includes the following steps:

[0031] Step 1: Coating a layer of copper on the surface of tungsten powder by electroless plating, the thickness of the coating is 50nm, and using a "V" type mixer to coat the copper-plated tungsten powder, copper powder and zinc powder with an average particle size of 2-4μm After mixing for 24 hours, hydrogen is used for reduction to obtain a mixture of three metal powders with a purity of more than 95%.

[0032] Step 2, put the mixed powder into graphite mold, and carry out vacuum sintering in spark plasma sintering equipment. The sintering process uses a sintering temperature of 800°C, a heating rate of 50°C / min, and a holding time of 5 minutes for solid-state sintering.

[0033] Step 3: Heat the tungsten-brass material prepared by sinterin...

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Abstract

The invention discloses a preparation method of a tungsten-copper-zinc alloy material. The preparation method comprises the specific processes of: burdening and mixing micro-scale pure tungsten powder, tungsten powder coated by pure copper on the surface as well as micro-scale copper powder and zinc powder, and carrying out cold isostatic extrusion, spark plasma sintering (SPS) and other methods to prepare the tungsten-copper-zinc alloy material with relative density more than 95%. The preparation method has the advantages that: by virtue of the preparation method, the tungsten-copper-zinc composite material with the relative density more than 95%, high hardness and higher strength can be prepared; brass has higher strength and hardness than pure copper; and through combing high strength and high density of tungsten as well as high conductivity, high thermal conductivity, higher strength and hardness and other performances of brass, the high-temperature-resistant and corrosion-resistant tungsten-copper-zinc alloy material suitable for electric spark machining, electronic packaging and aerospace materials are prepared.

Description

technical field [0001] The invention relates to a preparation process of a high-melting point metal and a metal composite material, belonging to the technical field of metallurgy, in particular to a preparation method of a novel tungsten-copper-zinc alloy material. Background technique [0002] The tungsten-based composite material involved in the present invention is a tungsten-copper-zinc alloy material. Tungsten-copper composite materials have both the high density and low thermal expansion coefficient of tungsten and the high electrical and thermal conductivity of copper. Its thermal conductivity, electrical conductivity and thermal expansion coefficient can be designed by adjusting the content of tungsten-copper components, so it is widely used in microwave devices, Integrated circuit packaging materials, electrical contact materials, and armor-breaking materials in the military industry. [0003] The technical process for preparing tungsten-copper composite materials ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C27/04C22C1/04
Inventor 刘金旭王星郭文启吕翠翠李树奎
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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