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

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

Inactive Publication Date: 2017-12-15
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 carburized carbon fiber blanket in ethanol slurry with a particle size of less than 0.3 μm and a content of 5% tantalum boride, place it in an ultrasonic cleaner and fill it with tantalum boride for 50 minutes, take it out and dry it to obtain a filled tantalum boride carbon fiber blanket;

[0021] (3) Pass the above-mentioned filled tantalum boride 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, the flow rate is controlled at 50ml / min, and the ...

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

[0027] (3) Pass the above-mentioned filled tantalum boride carbon fiber blanket into a mixed gas of trichloromethylsilane gas, hydrogen gas and argon gas at a temperature of 1000 °C, and the molar ratio of trichloromethylsilane gas: hydrogen gas: argon gas is 1: 4:4, the flow rate is controlled at 35...

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 in the ethanol slurry with a particle size of less than 0.3 μm and a content of 20% tantalum boride, place it in an ultrasonic cleaner and fill it with tantalum boride for 30 minutes, take it out and dry it to obtain a filled tantalum boride carbon fiber blanket;

[0033] (3) Pass the above-mentioned filled tantalum boride 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, the flow rate is control...

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Abstract

A method for preparing an ethyl alcohol dispersion tantalum boride silicon carbide-carbon fiber friction material is characterized in that carbonization is conducted on a graphited carbon fiber blanket with the density of 0.1-1.8 g / cm3, then ethyl alcohol dispersion tantalum boride filling, silicon carbide deposition and submerged siliconizing are conducted in sequence, and finally nitriding is conducted in the nitrogen atmosphere to generate the ethyl alcohol dispersion tantalum boride silicon carbide-carbon fiber friction material. The friction material is prepared through carburization, tantalum boride filling, silicon carbide deposition, submerged siliconizing and nitriding of the graphited carbon fiber blanket, has high strength, tenacity and friction performance, and is adaptable 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 Patents(China)
IPC IPC(8): C04B38/00C04B35/80C04B35/58C04B35/573C04B35/591C04B35/65C04B35/622C04B35/565C04B35/632
CPCC04B35/565C04B35/573C04B35/58064C04B35/591C04B35/622C04B35/632C04B35/806C04B38/00C04B2111/00362C04B2111/40C04B2235/46C04B2235/48C04B2235/5248C04B2235/5256C04B2235/616C04B2235/6567C04B2235/658
Inventor 唐竹兴
Owner SHANDONG UNIV OF TECH
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