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

A hafnium boride silicon carbide and friction material technology, applied in ceramic products, applications, household appliances, etc., 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: 2018-06-08
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 mixture 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 24 hours to obtain a carburized carbon fiber blanket ;

[0020] (2) The above carburized carbon fiber blanket is immersed in a grease slurry with a particle size of less than 0.3μm and a content of 5% hafnium boride, placed in an ultrasonic cleaner and filled with hafnium boride for 50 minutes, and then taken out and dried to obtain a filled boride Hafnium carbon fiber blanket, the synthetic fat slurry is an ethanol solution containing 5% synthetic fat;

[0021] (3) Pass the above-mentioned hafnium boride-filled carbon fiber blanket into a mixed gas of trichloromethylsilane, hydrogen and argon at a temperature of 900℃. The molar ratio of trichloromethylsilane: hydrogen: argon is 1: 5:5, the flow rate is contr...

Embodiment 2

[0025] (1) Change 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℃, the molar ratio of propane gas: nitrogen is 1:5, the flow rate is controlled at 350ml / min, and the carburizing treatment is 18 hours to obtain a carburized carbon fiber blanket ;

[0026] (2) Immerse the above carburized carbon fiber blanket into a grease slurry with a particle size of less than 0.3μm and a content of 12% hafnium boride, place it in an ultrasonic cleaner and fill it with hafnium boride for 40 minutes, take it out and dry it to prepare a filled boronized Hafnium carbon fiber blanket, the synthetic resin slurry is an ethanol solution containing 12% synthetic resin;

[0027] (3) The above-mentioned hafnium boride-filled carbon fiber blanket is introduced 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: argo...

Embodiment 3

[0031] (1) Change the density to 0.1g / cm 3 The graphitized carbon fiber blanket is fed with a mixture of propane gas and nitrogen at a temperature of 1100℃, the molar ratio of propane gas: nitrogen is 1:6, the flow rate is controlled at 600ml / min, and the carburizing treatment is 10 hours to obtain a carburized carbon fiber blanket ;

[0032] (2) Immerse the above carburized carbon fiber blanket into a grease slurry with a particle size of less than 0.3μm and a content of 20% hafnium boride, place it in an ultrasonic cleaner and fill it with hafnium boride for 30 minutes, take it out and dry it to obtain a filled boronized Hafnium carbon fiber blanket, the synthetic fat slurry is an ethanol solution containing 20% ​​synthetic fat;

[0033] (3) Pass the above-mentioned hafnium boride-filled 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 trichloromethylsilane gas: hydrogen: argon is 1: 3: ...

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Abstract

The invention provides a preparing method for a synthetic fat dispersed hafnium boride silicon carbide-carbon fiber friction material. The preparing method is characterized in that a graphited carbon fiber blanket with the density being 0.1-1.8 g / cm<3> is subjected to synthetic fat dispersed hafnium boride filling treatment after being subjected to carburizing treatment, then silicon carbide deposition treatment is carried out, then burying siliconizing treatment is carried out, and then nitridation treatment is carried out in nitrogen atmosphere, so that the synthetic fat dispersed hafnium boride silicon carbide-carbon fiber friction material is prepared. According to the method, the graphited carbon fiber blanket is adopted for being subjected to carburization, hafnium boride filling, silicon carbide deposition, burying siliconizing, nitridation and the like to prepare the friction material, and the prepared friction material is high in strength, toughness and friction performance, and capable of adapting to various weather conditions.

Description

Technical field [0001] The invention relates to a method for preparing a friction material composed of carbon fiber and a ceramic material, and belongs to the technical field of composite material preparation. Background technique [0002] At present, the friction materials mainly use carbon fiber and carbon (C / C) composite materials. Due to the relatively low wear resistance of C / C composite materials, people are seeking methods 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 brings serious safety hazards to use. Summary of the invention [0003] The purpose of the present invention is to provide a method for preparing a friction material that can overcome the above-mentioned defects and realize the preparation of higher strength, higher friction performance and various weather conditions. The technical solution is: [0004] The preparation method of the fa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/00C04B35/80C04B35/565C04B35/58C04B35/591C04B35/65C04B35/632C04B35/622
CPCC04B35/565C04B35/58078C04B35/591C04B35/622C04B35/632C04B35/806C04B38/00C04B2111/00362C04B2235/428C04B2235/46C04B2235/48C04B2235/5248C04B2235/5256C04B2235/616C04B2235/6567C04B2235/658C04B35/584
Inventor 唐竹兴
Owner SHANDONG UNIV OF TECH
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