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Preparation Method of Ultrasonic Dispersion of Vanadium Boride and Boron Carbide-Carbon Fiber Friction Material

A technology of vanadium boride, boron carbide, and friction materials, which is applied in the field of friction material preparation, can solve problems such as potential safety hazards and reduced friction performance, and achieve the effects of improved wear resistance, high friction performance, and high manufacturing costs

Inactive Publication Date: 2018-05-25
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the friction performance of C / C composite materials will be reduced in a humid environment, which will bring serious safety hazards to the use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Set the density to 1.8g / cm 3 The graphitized carbon fiber blanket is fed with a mixed gas of propane gas and nitrogen at a temperature of 900°C. The molar ratio of propane gas: nitrogen is 1:4, the flow rate is controlled at 50ml / min, and the carburizing treatment is performed for 24 hours to obtain a carburized carbon fiber blanket. ;

[0020] (2) Pass the above-mentioned carburized carbon fiber blanket into a mixed gas of boron trichloride, methane, hydrogen and argon at a temperature of 900 °C, and the molar ratio of boron trichloride: methane: hydrogen: argon is 1:1: 3:4, the flow rate is controlled at 50ml / min, and the deposited boron carbide is treated for 24 hours to obtain a deposited boron carbide carbon fiber blanket;

[0021] (3) Immerse the above-mentioned deposited boron carbide carbon fiber blanket in a slurry with a particle size of less than 0.3 μm and a content of 5% vanadium boride, place it in an ultrasonic cleaner and fill it with vanadium borid...

Embodiment 2

[0025] (1) Set the density to 0.8g / cm 3 The graphitized carbon fiber blanket is fed with a mixture of propane gas and nitrogen at a temperature of 1000°C. The molar ratio of propane gas: nitrogen is 1:5, the flow rate is controlled at 350ml / min, and the carburizing treatment is performed for 18 hours to obtain a carburized carbon fiber blanket. ;

[0026] (2) Pass the above-mentioned carburized carbon fiber blanket into a mixed gas of boron trichloride, methane, hydrogen and argon at a temperature of 1000 °C, and the molar ratio of boron trichloride: methane: hydrogen: argon is 1:1.5: 4.5:5, flow control at 350 ml / min, deposited boron carbide treatment for 17 hours to obtain deposited boron carbide carbon fiber blanket;

[0027] (3) Immerse the above-mentioned deposited boron carbide carbon fiber blanket in a slurry with a particle size of less than 0.3 μm and a content of 12% vanadium boride, place it in an ultrasonic cleaner and fill it with vanadium boride for 40 minutes, ...

Embodiment 3

[0031] (1) Set the density to 0.1g / cm 3 The graphitized carbon fiber blanket is passed into a mixed gas of propane gas and nitrogen at a temperature of 1100 ° C. The molar ratio of propane gas: nitrogen is 1: 6, the flow rate is controlled at 600ml / min, and the carburizing treatment is performed for 10 hours to obtain a carburized carbon fiber blanket. ;

[0032] (2) Pass the above-mentioned carburized carbon fiber blanket into a mixed gas of boron trichloride, methane, hydrogen and argon at a temperature of 1100 °C, and the molar ratio of boron trichloride: methane: hydrogen: argon is 1:2: 6:6, the flow rate is controlled at 600ml / min, and the deposited boron carbide is treated for 10 hours to obtain a deposited boron carbide carbon fiber blanket;

[0033] (3) Immerse the above-mentioned deposited boron carbide carbon fiber blanket into a slurry with a particle size of less than 0.3 μm and a content of 20% vanadium boride, place it in an ultrasonic cleaner and fill it with v...

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Abstract

The invention discloses a preparation method for an ultrasonically dispersed vanadium boride-boron carbide-carbon fiber friction material. The preparation method is characterized in that a graphited carbon fiber blanket with the density between 0.1 g / cm<3> and 1.8 g / cm<3> is subjected to carbonization, boron carbide deposition, ultrasonically dispersed vanadium boride filling, buried siliconization and nitridation in a nitrogen atmosphere in sequence to prepare the ultrasonically dispersed vanadium boride-boron carbide-carbon fiber friction material. According to the preparation method, the graphited carbon fiber blanket is subjected to carburization, silicon carbide deposition, vanadium boride filling, buried siliconization, nitridation and other steps to prepare the friction material, and the prepared friction material is high in strength, tenacity and friction performance and adaptive to various weather conditions.

Description

technical field [0001] The invention relates to a preparation method of a friction material composited by carbon fiber and ceramic material, and belongs to the technical field of composite material preparation. Background technique [0002] At present, carbon fiber and carbon (C / C) composite materials are mainly used as friction materials. Since the wear resistance of C / C composite materials is relatively low, people are looking for a method for preparing friction materials with higher wear resistance. In addition, the friction performance of C / C composite materials will be reduced in a humid environment, which will bring serious safety hazards to the use. Contents of the invention [0003] The object of the present invention is to provide a method for preparing a friction material that can overcome the above-mentioned defects, achieve higher strength, higher friction performance and adapt to various climatic conditions. Its technical solution is: [0004] The method of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/80C04B35/584C04B35/563C04B35/58C04B35/634C04B35/65C04B35/622
CPCC04B35/563C04B35/58064C04B35/584C04B35/622C04B35/63424C04B35/65C04B35/806C04B2235/428C04B2235/46
Inventor 唐竹兴
Owner SHANDONG UNIV OF TECH
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