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Graphite-copper laminar composite material and preparing method thereof

A layered composite material and composite material technology, which are applied in the field of graphite-copper layered composite materials and their preparation, can solve problems such as reducing engine propulsion capability, flight failure, and causing accidents, achieve excellent tribological properties, and improve fracture resistance. ability, the effect of improving mechanical properties

Active Publication Date: 2019-01-11
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the rapid development of modern science and technology and meeting the requirements of extreme service environments, graphite materials will suffer from wear, shedding, and breakage during the working process, which can easily cause seal failure, reduce engine propulsion capacity, cause flight failures, and even cause accidents. Some graphite materials can no longer meet the needs of high-tech equipment innovation and leapfrog development, and have become the key bottleneck technology that restricts the safe and reliable service of sealing systems in extreme environments, which in turn affects the development of high-end equipment in my country

Method used

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  • Graphite-copper laminar composite material and preparing method thereof
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  • Graphite-copper laminar composite material and preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Embodiment 1 A graphite-copper layered composite material, the layered composite material includes alternately arranged graphite layers and metal copper layers; the metal copper layers are connected together by a regularly arranged microporous structure running through the graphite layer .

[0029] Wherein: the graphite layer is composed of flexible graphite paper with a thickness of 0.17 mm.

[0030] The metallic copper layer is composed of bronze powder with a thickness of 0.20 mm.

[0031] The microporous structure is circular with a diameter of 400 μm and a center-to-center spacing of 800 μm.

[0032] The preparation method of this graphite-copper layered composite material comprises the following steps:

[0033] (1) Laser etching is used on graphite paper with a thickness of 0.3 mm. The laser power is 8.0 KW, the laser frequency is 10 Hz, the processing times is 3 times, and the processing speed is 6 mm / s. The obtained dimensions can be Controlled and regularly ...

Embodiment 2

[0038] Embodiment 2 A graphite-copper layered composite material, the layered composite material includes alternately arranged graphite layers and metal copper layers; the metal copper layers are connected together by a regularly arranged microporous structure running through the graphite layer .

[0039] Wherein: the graphite layer is composed of flexible graphite paper with a thickness of 0.11 mm.

[0040] The metallic copper layer is composed of bronze powder and has a thickness of 0.4 mm.

[0041] The microporous structure is triangular with a side length of 600 μm and a distance between centers of 1000 μm.

[0042] The preparation method of this graphite-copper layered composite material comprises the following steps:

[0043] ⑴Using the laser etching method on graphite paper with a thickness of 0.2 mm, the laser power is 8.7 KW, the laser frequency is 15 Hz, the processing times is 2 times, and the processing speed is 5 mm / s, and the triangular penetration is obtained....

Embodiment 3

[0047] Embodiment 3 A graphite-copper layered composite material, the layered composite material includes alternately arranged graphite layers and metal copper layers; the metal copper layers are connected together by a regularly arranged microporous structure running through the graphite layer .

[0048] Wherein: the graphite layer is composed of flexible graphite paper with a thickness of 0.3 mm.

[0049] The metallic copper layer is composed of bronze powder and has a thickness of 0.4 mm.

[0050] The microporous structure is circular with a diameter of 50 μm and a center-to-center spacing of 100 μm.

[0051] The preparation method of this graphite-copper layered composite material comprises the following steps:

[0052] ⑴Using the laser etching method on graphite paper with a thickness of 0.3 mm, the laser power is 9.5 KW, the laser frequency is 12 Hz, the processing times is 2 times, and the processing speed is 2 mm / s, and the circular shape is obtained. through the micr...

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Abstract

The invention relates to a graphite-copper laminar composite material. The laminar composite material comprises graphite layers and metal copper layers which are alternately arranged; and the metal copper layers are connected together through cellular structures which penetrate the graphite layers and are regularly arranged. The invention also discloses a preparation method of the graphite-copperlaminar composite material. By adjusting the size and density of the cellular structures, the interfacial bonding strength can be effectively controlled, and the overall mechanical properties and tribological properties of the material are adjusted.

Description

technical field [0001] The invention relates to the technical field of lubricating and sealing materials, in particular to a graphite-copper layered composite material and a preparation method thereof. Background technique [0002] With the development and progress of science and technology, more and more stringent requirements are put forward for materials, and the performance of materials directly determines the service reliability of components and complete machines. Among them, lubrication and sealing materials are important components of various transmission systems, propulsion systems, hydraulic systems, pneumatic systems, and wing breakages. In order to ensure the reliability of lubrication and sealing, the materials should be selected with high strength and good heat conduction. High performance, low and stable friction coefficient, excellent wear resistance and good machinability. Due to its many advantages such as high temperature resistance, corrosion resistance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/02B22F3/14B22F7/04B23K26/382B23K26/402
CPCB22F3/02B22F3/14B22F7/04B23K26/382B23K26/402
Inventor 张永胜樊恒中苏云峰宋俊杰姜小芳胡丽天
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI