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Metal-based carbon fiber composite material and producing method thereof

A technology of composite materials and manufacturing methods, applied in the direction of metal layered products, chemical instruments and methods, thin material processing, etc., can solve problems such as high temperature, and achieve the effect of high value and light weight

Inactive Publication Date: 2007-10-17
岛根县
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in these methods, in order to melt the metal or alloy used as the base, high temperature is required and a lot of energy is required

Method used

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  • Metal-based carbon fiber composite material and producing method thereof
  • Metal-based carbon fiber composite material and producing method thereof
  • Metal-based carbon fiber composite material and producing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] This embodiment provides a metal-based carbon fiber composite material, which uses carbon fibers that can be treated as continuous fibers, and the carbon fibers are aligned in one direction. As the carbon fiber, a pitch-based carbon fiber having a diameter of 10 μm continuous in the longitudinal direction and having a thermal conductivity of 1000 W / mK was used, and an aluminum foil having a thickness of 10 μm was used as the metal support. To fix the carbon fiber on the aluminum foil, the carbon fiber wound on the bobbin was pulled out using the apparatus shown in FIG. 2 , and low molecular weight polyethylene glycol was applied as a binder while applying tension. The following steps are continuously carried out: attaching carbon fibers aligned by tension to the unrolled aluminum foil, and winding up the foil after the adhesive is cured. Unwind the carbon fiber-attached aluminum foil (preform) from the roll, cut out a size of 200×300mm, stack 500 sheets, and laminate th...

Embodiment 2

[0064] This embodiment provides a metal matrix carbon fiber composite material, which uses carbon fibers that can be treated as short fibers, and the carbon fibers are aligned in one direction. In a ball mill, the gas-phase grown carbon fiber with a diameter of 200nm, a length of 5-20μm, and a thermal conductivity of 2000W / mK is mixed with 30% of copper powder with a particle size of about 100nm. To the obtained mixture, acetone and Pluronic (registered trademark) F68 dispersion binder were added and mixed to obtain an ink-like coating mixture. By the spray printing method shown in Figure 3, the obtained coating mixture was printed on the entire surface of the copper foil with a thickness of 6 μm, and the film thickness became 6 μm to form a preform, and dispersed in Pluronic (registered trademark) F68 After the binder is cured, it is wound up on a roll. This preform was unwound from a roll, cut out to a size of 200×300 mm, and 500 sheets of the cut out preforms were stacked,...

Embodiment 3

[0067] This embodiment provides a metal-matrix carbon fiber composite material that uses carbon fibers that can be processed as continuous fibers, which are aligned in one direction, and which are formed by pulse energization sintering as a small-scale-oriented method. Use pitch-based carbon fibers with a diameter of 10 μm, continuous in the length direction, and a thermal conductivity of 1,000 W / mK as carbon fibers, aluminum powder with an average particle size of 30 μm as a bonding auxiliary material, and an aluminum sheet with a thickness of 100 μm as a metal support . Initially, aluminum powder was suspended in ethanol solvent. About 6,000 carbon fibers were held in bundles, immersed in the suspension, and then only ethanol was evaporated to obtain carbon fibers in a state where aluminum powder was also adhered to the surface of the carbon fibers by electrostatic force after the solvent was dried. As the pulse energization sintering furnace shown in FIG. 8B , a furnace pr...

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Abstract

A metal base carbon fiber composite material which is produced by heating and pressing a metal and a carbon fiber, and has a structure wherein metal layers and metal layers containing a carbon fiber are laminated alternately; and a method for producing the above metal base carbon fiber composite material, which comprises a step of attaching carbon fibers onto a metal support in the form of a sheet or film to form a preform, a step of laminating a plurality of preforms to form a preform laminate, heating and pressuring the preform laminate under vacuum or in a non-oxidizing atmosphere to thereby integrate the preforms with one another. The above metal base carbon fiber composite material can be produced by the use of generally used non-expensive materials with the energy less than that used in the molten metal method, can have a wide range of dimension or shape (in particular, a large surface area), exhibits excellent thermal conductivity and also is lightweight.

Description

technical field [0001] The invention relates to a metal matrix carbon fiber composite material and a manufacturing method thereof. In particular, it relates to a metal-matrix carbon fiber composite material with high thermal conductivity suitable for heat release of devices operating from normal temperature to hundreds of degrees Celsius, and a method for manufacturing the same, and more specifically, it relates to a composite material having a metal layer and containing carbon fibers A metal-matrix carbon fiber composite material with alternately overlapping metal layers and a manufacturing method thereof. Background technique [0002] At present, aluminum, copper, or their alloys are used as heat-dissipating parts (base plates, radiators, heat spreaders, etc.) of electronic devices or power modules using semiconductors, or peripheral parts of heat-generating parts of mechanical devices The thermal conductivity is mainly used. In addition, graphite, or high thermal conduc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C49/14C22C47/14C22C47/20C22C49/04C22C49/06H01L23/373C22C101/10C22C121/02
CPCC22C47/20H01L2924/0002B32B19/04B32B15/20B32B2457/20B32B2262/106B32B2307/718C22C47/06B32B2307/302H01L23/373C22C49/14H01L2924/12044C22C47/025B32B15/14Y10T428/30H01L2924/00
Inventor 尾野干也上野敏之
Owner 岛根县
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