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Tungsten copper functional composite material and its preparation technology

A technology of functional composite material and preparation process, which is applied in the field of tungsten-copper two-phase metal composite material and its preparation process, and can solve the problems that the preparation process does not pass the test and the alloy material cannot meet the use requirements, etc.

Inactive Publication Date: 2007-12-19
SHANGHAI RES INST OF MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the fact that the preparation process of tungsten-copper alloy has not passed the standard, the alloy material cannot meet the requirements of use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A tungsten-copper functional composite material comprises the following components and contents (weight): 85% tungsten and 15% copper.

[0026] The preparation process of the above-mentioned tungsten-copper functional composite material comprises the following steps:

[0027] (1) Powder processing

[0028] The tungsten powder is in accordance with the technical conditions of GB3458-1982 tungsten powder, the grade GW-1, and the Fischer average particle size is 5-15 microns; the electrolytic copper powder is in accordance with the GB5246-1985 electrolytic copper powder, the grade FTD1, -200 mesh 200 mesh sieve) powder.

[0029] The powder used in the present invention needs to undergo the following activation pretreatment, which is one of the characteristics of the present invention.

[0030] The tungsten powder is protected by 1000°C dry ammonia decomposition gas and kept warm for 30 minutes; the electrolytic copper powder is protected by 400°C dry ammonia decompositio...

Embodiment 2

[0041] A tungsten-copper functional composite material comprises the following components and contents (weight): 80% tungsten and 20% copper.

[0042] The preparation process of the above-mentioned tungsten-copper functional composite material comprises the following steps:

[0043] (1) Powder processing

[0044] The tungsten powder is in accordance with the technical conditions of GB3458-1982 tungsten powder, the grade GW-1, and the Fischer average particle size is 5-15 microns; the electrolytic copper powder is in accordance with the GB5246-1985 electrolytic copper powder, the grade FTD1, -200 mesh 200 mesh sieve) powder.

[0045] The powder used in the present invention needs to undergo the following activation pretreatment, which is one of the characteristics of the present invention.

[0046] The tungsten powder is protected by 1050°C dry ammonia decomposition gas and kept warm for 15 minutes; the electrolytic copper powder is protected by 450°C dry ammonia decompositio...

Embodiment 3

[0057]A tungsten-copper functional composite material comprises the following components and contents (weight): 90% tungsten and 10% copper.

[0058] The preparation process of the above-mentioned tungsten-copper functional composite material comprises the following steps:

[0059] (1) Powder processing

[0060] The tungsten powder is in accordance with the technical conditions of GB3458-1982 tungsten powder, the grade GW-1, and the Fischer average particle size is 5-15 microns; the electrolytic copper powder is in accordance with the GB5246-1985 electrolytic copper powder, the grade FTD1, -200 mesh 200 mesh sieve) powder.

[0061] The powder used in the present invention needs to undergo the following activation pretreatment, which is one of the characteristics of the present invention.

[0062] The tungsten powder is protected by 950°C dry ammonia decomposition gas and kept warm for 60 minutes; the electrolytic copper powder is protected by 350°C dry ammonia decomposition ...

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Abstract

A functional W-Cu material is prepared from W and Cu through powdering, adding inducing agent, proportionally mixing, die pressing, presintering and fusing osmosis. It has low expansibility and high thermal conductivity.

Description

technical field [0001] The invention relates to an alloy and a preparation process thereof, in particular to a tungsten-copper two-phase metal composite material and a preparation process thereof. Background technique [0002] In recent years, the demand for substrates, inlays, connectors and heat dissipation components in large-scale integrated circuits and high-power microwave devices has expanded rapidly. The tungsten-copper composite material is composed of two materials with different properties, tungsten and copper. It inherits the respective advantages of the two materials and achieves properties that cannot be possessed by a single material. It can achieve the above-mentioned by changing the relative content of the constituent phases Requirements. The high thermal conductivity and heat resistance of tungsten-copper composite materials can increase the power of microelectronic devices, and the thermal expansion coefficient of tungsten-copper composite materials can m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C27/04C22C1/04
Inventor 蔡宏伟仲守亮宁超张德明沈忠良
Owner SHANGHAI RES INST OF MATERIALS CO LTD
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