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Preparation method of ultrasonically dispersed tungsten boride silicon carbide-carbon fiber friction material

A technology of tungsten boride silicon carbide and friction materials, which can be used in ceramic products, applications, household appliances, etc., can solve the problems of safety hazards, friction performance reduction, etc., and achieve the effect of improving wear resistance and high manufacturing cost

Inactive Publication Date: 2018-06-26
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) Immerse the above-mentioned carburized carbon fiber blanket into a slurry with a particle size of less than 0.3 μm and a content of 5% tungsten boride, place it in an ultrasonic cleaner and fill it with tungsten boride for 50 minutes, take it out and dry it to obtain a carbon fiber filled with tungsten boride Blanket, the slurry is an aqueous solution containing 1.5% ammonium polyacrylate with a pH value of 9;

[0021] (3) Pass the above-mentioned filled tungsten boride carbon fiber blanket into a mixed gas of trichloromethylsilane gas, hydrogen gas and argon gas at a temperature of 900 ° C. The molar ratio of trichlorom...

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) Immerse the above-mentioned carburized carbon fiber blanket into a slurry with a particle size of less than 0.3 μm and a content of 12% tungsten boride, place it in an ultrasonic cleaner and fill it with tungsten boride for 40 minutes, take it out and dry it to obtain a carbon fiber filled with tungsten boride blanket, the slurry is an aqueous solution containing 1% ammonium polyacrylate with a pH value of 10;

[0027] (3) Pass the above-mentioned filled tungsten boride carbon fiber blanket into a mixed gas of trichloromethylsilane gas, hydrogen gas and argon gas at a temperature of 1000 ° C. The molar ratio of trichloro...

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) Immerse the above-mentioned carburized carbon fiber blanket into a slurry with a particle size of less than 0.3 μm and a content of 20% tungsten boride, place it in an ultrasonic cleaner and fill it with tungsten boride for 30 minutes, take it out and dry it to obtain a carbon fiber filled with tungsten boride blanket, the slurry is an aqueous solution containing 0.5% ammonium polyacrylate with a pH value of 11;

[0033] (3) Pass the above-mentioned filled tungsten boride carbon fiber blanket into a mixed gas of trichloromethylsilane gas, hydrogen gas and argon gas at a temperature of 1100 ° C. The molar ratio of...

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Abstract

The invention discloses a preparation method for an ultrasonically-dispersed tungsten boride / silicon carbide-carbon fiber friction material. The method is characterized in that a graphitized carbon fiber blanket of which the density is 0.1 to 1.8g / cm<3> is carburized, ultrasonically-dispersed tungsten boride is filled, silicon carbide is deposited, burying siliconizing is performed, and then nitrogen treatment is performed in a nitrogen atmosphere so as to obtain the ultrasonically-dispersed tungsten boride / silicon carbide-carbon fiber friction material. According to the method, the friction material can be prepared by means of the steps of carburizing the graphitized carbon fiber blanket, filling the tungsten boride, depositing the silicon carbide, and performing burying siliconizing, nitrogen treatment and the like. The prepared friction material is high in strength, high in toughness and high in friction performance, and is a friction material adaptive to various climatic 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 Patents(China)
IPC IPC(8): C04B38/00C04B35/84C04B35/58C04B35/565C04B35/584C04B35/622C04B35/634C04B35/65
CPCC04B35/573C04B35/58064C04B35/591C04B35/622C04B35/63416C04B35/65C04B35/806C04B38/00C04B2235/422C04B2235/46C04B2235/616C04B2235/658
Inventor 唐竹兴
Owner SHANDONG UNIV OF TECH
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