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A kind of multi-layer composite material used for thermal diffusion of vapor chamber and its preparation method

A multi-layer composite material and thermal diffusion technology, which is applied in the direction of modification using liquid cooling, heat treatment equipment, chemical instruments and methods, etc. Good heat dissipation effect, simple and fast production process

Active Publication Date: 2021-03-30
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent CN201880026292.2 discloses a vapor chamber, which only changes the structure of the vapor chamber, and its heat dissipation performance is limited; patent CN201910634169.5 discloses a method of manufacturing a vapor chamber, using titanium metal or titanium alloy as the shell , to prepare the vapor chamber, to manufacture a film layer with anti-oxidation function on the inner surface of the titanium and titanium alloy shell, and to circulate the cooling liquid in the vapor chamber to achieve the heat dissipation effect, but the cost is high and the process is complicated. Difficult to promote on a large scale

Method used

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  • A kind of multi-layer composite material used for thermal diffusion of vapor chamber and its preparation method
  • A kind of multi-layer composite material used for thermal diffusion of vapor chamber and its preparation method
  • A kind of multi-layer composite material used for thermal diffusion of vapor chamber and its preparation method

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preparation example Construction

[0031] Such as image 3 As shown, the present invention also provides a method for preparing a multilayer composite material for thermal diffusion of a thermal plate, including:

[0032] Step 1, pretreatment of the porous metal layer: A porous metal layer is annealed under a reducing atmosphere in a hydrogen annealing furnace;

[0033] Step 2, the pretreatment of the dense metal layer: the substrate metal material is surface turning, milling, grinding, and the plane is in the range of -0.1 mm;

[0034] Step 3, the pre-treated porous metal layer and the substrate dense metal layer are placed in a high-temperature resistant to high temperature resistant steel or graphite or the like, and the heating and pressurization is carried out under vacuum or atmosphere protection;

[0035] Step 4, after the diffusion is sintered, the pressure at the time of sintering, cooling to room temperature, breaks vacuum or stopping the atmosphere protection, to obtain a multilayer composite material fo...

Embodiment 1

[0043] A multi-layer composite material for thermally diffusion of thermally diffusing is produced by a multi-hole metal nickel and a grade 5A05.

[0044] Step 1, pretreatment of the porous metal layer: Annealed porous metal nickel in the hydrogen furnace, wherein the porous metal nickel thickness is 0.1 mm to 0.5 mm, the porosity is 85% ~ 95%, the pore size is 50 μm ~ 200 μm, and the pore is all The through hole, the hole and the holes are completely connected; the annealing temperature is 600 ° C ~ 700 ° C, the annealing time is 60 ± 5 min;

[0045] Step 2, the pretreatment of the dense metal layer: the aluminum alloy sheet of 5A05 is surface turning and grinding, ensuring that the plane is in the range of -0.1mm, clean, has a fresh metal surface, and can not have oil, water Pollutants such as stains, dust;

[0046] Step 3, placing the pretreated porous metal nickel with a dense 5A05 aluminum alloy plate in a vacuum furnace, is fixed by graphite mold, and the two materials stack...

Embodiment 2

[0050] A multi-layer composite material for thermal diffusion for thermally diffusion of thermally diffusing is produced by a porous metal copper and a grade 6063.

[0051] Step 1, pretreatment of the porous metal layer: Annealed porous metal copper in a hydrogen furnace, wherein the porous metal copper thickness is 0.2mm to 1 mm, the porosity is 70% to 90%, the pore size is 100 μm ~ 500 μm, and all the pores are all The hole, the hole and the hole are completely connected; the annealing temperature is 500 ° C ~ 600 ° C, the annealing time is 80 to 90 min;

[0052] Step 2, the pretreatment of the dense metal layer: the aluminum alloy sheet having a grade 6063 is surface turning and grinding, ensuring that the plane is in the range of -0.1mm, the surface is clean, with a fresh metal surface, can not have oil, water Pollutants such as stains, dust;

[0053] Step 3, placing the pre-treated porous metal copper with a dense 6063 aluminum alloy plate in a vacuum furnace, is fixed with a...

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Abstract

The invention provides a multi-layer composite material for thermal diffusion of a vapor chamber and a preparation method of the multilayer composite material, the material comprises a porous metal layer and a compact metal layer, the porous metal layer and the compact metal layer are combined by diffusion sintering, and the preparation method comprises the following steps: carrying out bright annealing treatment on the porous metal layer; carrying out surface treatment on a substrate compact metal material ; stacking the treated porous metal material and the substrate compact metal material in a vacuum furnace or an atmosphere protection furnace, and carrying out heating, pressurizing, diffusing and sintering; and after diffusion sintering, continuously maintaining the pressure during sintering, cooling to room temperature, and breaking vacuum or stopping atmosphere protection to obtain the thermal diffusion multilayer composite material for the vapor chamber. According to the multi-layer composite material for thermal diffusion of the vapor chamber, the porosity, pore diameter, thickness and other technical parameters of the porous layer are accurately controlled, the quality isstable, meanwhile, the technological process is short, the production cost is low, and the multi-layer composite material is suitable for batch production.

Description

Technical field [0001] The present invention relates to a new material and a new technique for preparing a composite material, and more particularly to a multilayer composite material for thermally diffusion of thermally diffusion. Background technique [0002] As the electronic components such as chip, the performance of electronic components is continuously improved, smartphones and tablets are constantly miniaturized and integrated, as well as some high-power electronic devices, such as phased array radar antenna T / R components, power lithium The thermal management of the ion battery module, the heat transfer and thermal diffusion becomes an indispensable important guarantee for the above electronic devices. [0003] The heat of the electronic device is increasingly serious as high integration, high performance, and miniaturization, and must adopt a suitable thermal conduction and thermal diffusion pathway to achieve heat transfer and distribution to ensure the stability of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/01B32B3/24B32B7/08B32B33/00C22F1/02C21D9/00H05K7/20
CPCB32B3/266B32B7/08B32B15/01B32B15/017B32B2457/00C21D9/0081C22F1/02H05K7/2029
Inventor 余琨
Owner CENT SOUTH UNIV
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