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Preparing method for ethanol-dispersed tungsten carbide silicon carbide and carbon fiber friction material

A technology of tungsten carbide, silicon carbide and friction materials, which is applied in the field of preparation of friction materials, can solve the problems of reduced friction performance and potential safety hazards, and achieve the effect of improving wear resistance and high manufacturing cost

Inactive Publication Date: 2016-03-23
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 in an ethanol slurry with a particle size of less than 0.3 μm and a content of 5% tungsten carbide, place it in an ultrasonic cleaner and fill it with tungsten carbide for 50 minutes, take it out and dry it to obtain a carbon fiber blanket filled with tungsten carbide;

[0021] (3) Pass the above-mentioned filled tungsten carbide carbon fiber blanket into a mixed gas of trichloromethylsilane gas, hydrogen gas and argon gas at a temperature of 900 °C, and the molar ratio of trichloromethylsilane gas: hydrogen gas: argon gas is 1:5 : 5, flow control is at 50ml / min...

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 an ethanol slurry with a particle size of less than 0.3 μm and a content of 12% tungsten carbide, place it in an ultrasonic cleaner and fill it with tungsten carbide for 40 minutes, take it out and dry it to obtain a carbon fiber blanket filled with tungsten carbide;

[0027] (3) Pass the above-mentioned filled tungsten carbide 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 trichloromethylsilane gas: hydrogen gas: argon gas is 1:4 : 4, flow control is at 350ml / m...

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) Immerse the above-mentioned carburized carbon fiber blanket in an ethanol slurry with a particle size of less than 0.3 μm and a content of 20% tungsten carbide, place it in an ultrasonic cleaner and fill it with tungsten carbide for 30 minutes, take it out and dry it to obtain a carbon fiber blanket filled with tungsten carbide;

[0033] (3) Pass the above-mentioned filled tungsten carbide carbon fiber blanket into a mixed gas of trichloromethylsilane gas, hydrogen gas and argon gas at a temperature of 1100 °C, and the molar ratio of trichloromethylsilane gas: hydrogen gas: argon gas is 1:3 : 3, flow control is at 600m...

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Abstract

The invention relates to a preparing method for an ethanol-dispersed tungsten carbide silicon carbide and carbon fiber friction material. The preparing method is characterized in that a graphited carbon fiber blanket with the density ranging from 0.1 g / cm<3> to 1.8 g / cm<3> is subjected to carburizing treatment, padding treatment through ethanol-dispersed tungsten carbide, silicon carbide depositing treatment and buried siliconizing treatment in sequence, then nitriding treatment is carried out in a nitrogen atmosphere, and the ethanol-dispersed tungsten silicon carbide and carbon fiber friction material is obtained. According to the preparing method, the fiction material is prepared by performing the steps of carburizing, tungsten carbide padding, silicon carbide depositing, buried siliconizing, nitriding and the like on the graphited carbon fiber blanket, and the prepared friction material is high in strength, tenacity and friction performance and adapts 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 preparatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/80C04B35/565C04B35/56C04B35/584C04B35/632C04B35/65C04B35/622
CPCC04B35/5626C04B35/573C04B35/591C04B35/622C04B35/632C04B35/65C04B35/806C04B2235/428C04B2235/46
Inventor 唐竹兴
Owner SHANDONG UNIV OF TECH
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