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Preparation method of ethanol dispersed hafnium boride silicon carbide-carbon fiber friction material

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

Inactive Publication Date: 2016-06-01
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 ethanol slurry with a particle size of less than 0.3 μm and a content of 5% hafnium boride, place it in an ultrasonic cleaner and fill it with hafnium b...

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, the flow rate is controlled at 350ml / min, and the deposited boron carbide is treated for 17 hours to obtain a deposited boron carbide carbon fiber blanket;

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

Embodiment 3

[0031] (1) Set the density to 0.1g / cm 3 The graphitized carbon fiber blanket is fed with 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 ethanol slurry with a particle size of less than 0.3 μm and a content of 20% hafnium boride, place it in an ultrasonic cleaner and fill it with ha...

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Abstract

The invention provides a preparation method of an ethanol dispersed hafnium boride silicon carbide-carbon fiber friction material. The preparation method is characterized in that graphited carbon fiber blanket with the density being 0.1 to 1.8g / cm<3> is subjected to carburizing treatment; then, boron carbide deposition treatment is performed; then, ethanol dispersed hafnium boride filling treatment is performed; next, embedding siliconing treatment is performed; next, nitridation treatment is performed in nitrogen atmosphere to obtain the ethanol dispersed hafnium boride silicon carbide-carbon fiber friction material. The graphited carbon fiber blanket is used; the friction material preparation is realized through the steps of carburization, silicon carbide deposition, hafnium boride filling, embedding siliconing, nitridation and the like; the prepared friction material has high intensity, high toughness and high friction performance, and belongs to a friction material adapting to various climate 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 preparatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B35/84C04B35/563C04B35/58C04B35/584C04B35/622C04B35/634C04B35/65
CPCC04B35/563C04B35/58078C04B35/591C04B35/622C04B35/63416C04B35/65C04B35/806C04B38/00C04B2235/422C04B2235/46C04B2235/5248C04B2235/616C04B2235/658
Inventor 唐竹兴
Owner SHANDONG UNIV OF TECH
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