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C/C-SiC-ZrC-ZrB2 complex-phase ceramic-based frictional braking material and preparation method thereof

A friction brake material, ceramic technology, applied in friction linings, ceramic layered products, chemical instruments and methods, etc., can solve the problem of reduced friction coefficient, poor high temperature oxidation resistance, difficult to meet the all-weather and complex service of aircraft, etc. problems, to achieve the effect of simplifying the manufacturing process

Inactive Publication Date: 2014-02-26
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when used in humid and salt spray environments, the friction coefficient drops sharply, making the braking performance unstable, making it difficult to meet the needs of aircraft in all-weather and complex service
In addition, due to the poor high-temperature oxidation resistance of C / C composite materials, it is necessary to design an anti-oxidation coating when preparing brake materials.

Method used

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  • C/C-SiC-ZrC-ZrB2 complex-phase ceramic-based frictional braking material and preparation method thereof
  • C/C-SiC-ZrC-ZrB2 complex-phase ceramic-based frictional braking material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The carbon fiber prefabricated body is made of T700 12K PANCF non-weft carbon cloth and a layer of T700 12K PANCF carbon fiber mesh tire, which is continuously needle-punched to form an integral structure fabric with a volume density of 0.28g / cm 3 .

[0038] Using methane as a carbon source, a chemical vapor deposition furnace is used to deposit a pyrolytic carbon interface layer on the carbon fiber surface of a carbon fiber preform. The process conditions are as follows: the deposition temperature is 1000°C, the total pressure is 5kPa; the methane flow rate is 2L / min, and the deposition time is 20h; the bulk density of the material obtained after deposition is 0.55g / cm 3 .

[0039] Use polycarbosilane, polycarbozircone, and polycarbaborazane as the multiphase ceramic precursors, and prepare solutions with xylene at a mass ratio of 50%, and then mix the three solutions at a mass ratio of 1:4:4 Dubbed as a multiphase ceramic precursor solution. Put the carbon fiber pr...

Embodiment 2

[0041] The carbon fiber prefabricated body is made of T700 12K PANCF non-weft carbon cloth and a layer of T700 12K PANCF carbon fiber net tire, and the overall structure fabric is formed by continuous needle punching, with a volume density of 0.50g / cm 3 .

[0042] Using propane as a carbon source, a chemical vapor deposition furnace is used to deposit a pyrolytic carbon interface layer on the carbon fiber surface of a carbon fiber preform. The process conditions are as follows: the deposition temperature is 950°C, the total pressure is 10kPa, the propane flow rate is 4L / min, the deposition time is 10h, and the bulk density of the deposited material is 0.81g / cm 3 .

[0043] Use polycarbosilane, polycarbozircone, and polycarbaborazane as the precursors of multiphase ceramics, and prepare solutions with xylene at a mass ratio of 50%, and then mix the three solutions at a mass ratio of 1:4:2 Dubbed as a multiphase ceramic precursor solution. Put the carbon fiber prefabricated bod...

Embodiment 3

[0045] The carbon fiber preform is woven into a 2.5D overall structure fabric with T700 carbon fiber, and the volume density is 0.82g / cm 3 .

[0046] Using propane as a carbon source, a pyrolytic carbon interface layer was prepared on the carbon fiber surface of a carbon fiber preform using a chemical vapor deposition furnace. The process conditions are as follows: the deposition temperature is 950°C; the total pressure is 10kPa; the propane flow rate is 4L / min; the deposition time is 10h, and the density of the deposited material reaches 1.1g / cm 3 .

[0047] Using polycarbosilane, polycarbozircone, and polycarbaborazane as the precursors of multiphase ceramics, they were formulated into solutions with toluene at a mass ratio of 50%, and then the three solutions were mixed at a mass ratio of 1:2:4. Form a multiphase ceramic precursor solution. Put the carbon fiber prefabricated body deposited with the pyrolytic carbon interface layer in a vacuum container, add the multiphas...

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Abstract

The invention relates to a C / C-SiC-ZrC-ZrB2 complex-phase ceramic-based frictional braking material and a preparation method thereof. The frictional braking material comprises a carbon-fibre prefabricated body comprising carbon fibre and a ceramic matrix, wherein a carbon interface layer is additionally deposited on the surface of the carbon fibre of the carbon-fibre prefabricated body; and the ceramic matrix is formed on the carbon-fibre prefabricated body. According to the complex-phase ceramic-based frictional braking material disclosed by the invention, the wet-state service performance of a traditional carbon / carbon braking material can be effectively improved, and the service life is prolonged.

Description

technical field [0001] The present invention relates generally to friction braking materials. Specifically, it relates to a multi-phase ceramic-based friction braking material for braking high-speed vehicles such as airplanes and high-speed trains. Background technique [0002] Friction materials are used in brakes, clutches and friction transmissions of various vehicles and machinery. In these braking devices, the friction performance of the friction material is used to convert the kinetic energy of rotation into heat energy or other forms of energy, thereby braking the rotating device. An ideal brake material should have the following properties: sufficient and stable coefficient of friction; high thermal conductivity and heat resistance; high wear resistance; good resistance to oil, humidity and corrosion; sufficient strength; There is little or no noise when the parts are in frictional contact; no bonding or seizure occurs during work; the source of raw materials is ab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D69/02C04B35/83B32B18/00
Inventor 张伟刚钱扬保魏玺
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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