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Tungsten-copper alloy and graphite composite cooling fin and production method thereof

A technology of composite heat sink and graphite heat sink, applied in the direction of cooling/ventilation/heating transformation, can solve the problem of not meeting the heat dissipation requirements, and achieve the effects of excellent air tightness, easy size control, and high thermal conductivity

Inactive Publication Date: 2013-09-11
江西量一光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its traditional heat dissipation materials and structures are far from meeting the heat dissipation requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] A tungsten-copper alloy and graphite composite heat sink is characterized in that: the composite heat sink is sequentially composed of graphite sheet-tungsten-copper alloy sheet-graphite sheet from top to bottom.

[0012] The method of preparing tungsten-copper alloy and graphite composite heat sink: take expandable graphite and place it in a high-temperature furnace, expand it at 1000°C for 8 hours, then naturally cool it and then calender it to a thickness of 2.5mm; then extrude it through graphite coil equipment The sheet-shaped graphite heat sink is pasted with tungsten-copper alloy with a thickness of 0.5 mm on the top and bottom of the graphite heat sink, and rolled into one body.

[0013] The present invention is by no means limited to these examples. The above descriptions are only preferred embodiments of the present invention, and are only used to describe the present invention, and should not be construed as limiting the scope of the present invention. It sh...

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Abstract

The invention discloses a tungsten-copper alloy and graphite composite cooling fin which is formed by a graphite sheet, a tungsten-copper alloy sheet and a graphite sheet from top to bottom in sequence. The production method of the tungsten-copper alloy and graphite composite cooling fin includes: expansible graphite is placed in a high temperature furnace, is expanded for 8 hours at high temperature of 1000 DEG C, is cooled naturally and is calendared to be as thick as 2.5mm; and the graphite is extruded to be sheet-shaped graphite cooling fins through a graphite coiled material device, and the graphite cooling fins are adhered to the upper surface and the lower surface of tungsten-copper alloy as thick as 0.5mm and then the cooling fins and the tungsten-copper alloy are integrally calendared. The tungsten-copper alloy and graphite composite cooling fin has high heat conductivity, excellent gas tightness, high temperature resistance and stable property.

Description

technical field [0001] The invention relates to a tungsten-copper alloy and graphite composite heat sink and a preparation method thereof. Background technique [0002] With the rapid development of microelectronics integration technology and high-density printed board assembly technology, the assembly density has increased rapidly, the volume of electronic components and logic circuits has been reduced by thousands of times, and electronic instruments and equipment are becoming lighter, thinner, shorter and smaller. direction development. Under high-frequency operating frequency, the working thermal environment of semiconductors moves rapidly towards high temperature. At this time, the heat generated by electronic components accumulates and increases rapidly. Under the ambient temperature of use, electronic components must still work normally with high reliability , and the ability to dissipate heat in time becomes a key limiting factor affecting its service life. In orde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K7/20
Inventor 廖昆
Owner 江西量一光电科技有限公司
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