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Preparation method of carbon-ceramic brake material with strong oxidation resistance

An anti-oxidation, carbon-ceramic technology, applied in mechanical equipment, friction linings, gear transmission mechanisms, etc., can solve the problems of wear and friction interface stability, poor anti-oxidation performance of friction interface, etc., to reduce oxidation wear and improve anti-oxidation. The effect of oxidative power

Inactive Publication Date: 2020-04-24
山东道普安制动材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It solves the problems of poor oxidation resistance of the friction interface, severe wear and poor stability of the friction interface in the application and development of the current carbon / ceramic brake materials in automobiles and high-speed rail.

Method used

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  • Preparation method of carbon-ceramic brake material with strong oxidation resistance

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preparation example Construction

[0011] A method for preparing a carbon ceramic brake material with strong oxidation resistance, comprising the following steps:

[0012] 1) After high-temperature heat treatment of the three-dimensional needle-punched preform, pyrolytic carbon was deposited by chemical vapor infiltration CVI to obtain a density of 0.6g / cm 3 -1.0g / cm 3 carbon / carbon composites;

[0013] 2) Depositing boron carbide on the upper surface of the carbon / carbon composite material by chemical vapor infiltration CVI deposition to obtain a carbon / carbon-boron carbide composite material;

[0014] 3) Deposit pyrolytic carbon on the surface of carbon / carbon-boron carbide composite boron carbide by chemical vapor infiltration CVI deposition, and obtain a density of 1.3g / cm 3 -1.7g / cm 3 Multilayer structure carbon / carbon-boron carbide composite materials containing carbon-boron carbide-carbon;

[0015] 4) Carrying out high-temperature heat treatment to the multilayer structure carbon / carbon-boron carbide...

Embodiment 1

[0033] A method for preparing a carbon ceramic brake material with strong oxidation resistance, the steps are as follows:

[0034] 1) Preparation of carbon fiber preform:

[0035] First, the C fiber with the brand name T700 is made into a short fiber tire net and a non-weft fabric, and then the single layer of 0° no weft fabric, tire net, 90° no weft fabric, and tire net are laminated in sequence, and then the edge belt is used to The lower barb is used for needle punching of woven fabrics and tire nets. During the needle punching process, the barbs bring the fiber of the tire mesh layer to the vertical direction, so that the non-weft fabric and the tire mesh are integrated into one, and the density of the needle punching holes is 8 to 12 pcs / cm 2 . According to the required thickness, the three-dimensional needle-punched carbon fiber prefabricated body is obtained after repeated lamination and needle punching. The preform density is about 0.55g / cm3, the volume content of c...

Embodiment 2

[0054] A method for preparing a carbon ceramic brake material with strong oxidation resistance, the steps are as follows:

[0055] 1) Preparation of carbon fiber preform:

[0056] First, the C fiber with the brand name T700 is made into a short fiber tire net and a non-weft fabric, and then the single layer of 0° no weft fabric, tire net, 90° no weft fabric, and tire net are laminated in sequence, and then the edge belt is used to The lower barb is used for needle punching of woven fabrics and tire nets. The barbs bring the fiber of the tire mesh layer to the vertical direction during the needling process, so that the non-woven fabric and the tire mesh are integrated into one, and the density of the needle punching holes is 8-12 per cm2. According to the required thickness, the three-dimensional needle-punched carbon fiber prefabricated body is obtained after repeated lamination and needle punching. The preform density is about 0.55g / cm3, the volume content of carbon fiber i...

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Abstract

The invention relates to a preparation method of a carbon-ceramic brake material with strong oxidation resistance. The method is based on a three-dimensional needled carbon / ceramic brake material. A carbon / carbon-boron carbide composite material is obtained by introducing a CVI deposition B4C process technology between pyrolytic carbon and pyrolytic carbon; a siliconizing treatment is carried outafter a high-temperature treatment; the antioxidant carbon / carbon-boron carbide-silicon carbide composite material with a density of 1.9 g / cm<3> to 3.0 g / cm<3> is obtained; according to the method, the pyrolytic carbon matrix and the carbon fibers in the boron carbide layer can be effectively protected from being eroded by oxygen, meanwhile, the pyrolytic carbon layer outside the boron carbide layer is not influenced and reacts with molten silicon to generate silicon carbide, the integrity of the boron carbide layer is protected; the distribution uniformity of ceramic phases in each area is improved, the mechanical wear resistance of a carbon / carbon area is improved by utilizing the high hardness of boron carbide, the expansion path of cracks in the material failure process is prolonged through the multi-layer structure design, stress release is facilitated, the bearing capacity of the matrix is improved, and the strength and toughness of the brake material become better.

Description

Technical field: [0001] The invention relates to a preparation method of a carbon ceramic brake material with strong oxidation resistance, and belongs to the technical field of preparation technology of carbon fiber reinforced ceramic matrix composite materials. Background technique: [0002] Carbon fiber reinforced ceramic matrix composites have the advantages of high temperature resistance, high strength, and light weight, which overcome the shortcomings of traditional ceramics such as high brittleness and poor reliability. The fracture behavior of the material is similar to that of metals, with low susceptibility to cracking and no catastrophic failure. Carbon fiber reinforced ceramic matrix composites are widely used in high-temperature thermal structures, such as spacecraft engines, spacecraft heat protectors, and brake materials for automobiles and aircraft. [0003] Carbon-ceramic brake material is a new type of high-performance brake material developed after powder ...

Claims

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Application Information

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IPC IPC(8): C04B35/83C04B35/84C04B41/89F16D69/02
CPCC04B35/83C04B41/89C04B41/52C04B41/009F16D69/023C04B2235/77F16D2200/0052F16D2200/0039F16D2200/0034F16D2200/0086C04B41/5058C04B41/4531C04B41/5059C04B41/4558
Inventor 刘汝强杨川何留阳李宗乐
Owner 山东道普安制动材料有限公司
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