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Preparation method of ultrasonic-dispersion niobium and carbide silicon carbide-carbon fiber friction material

A technology of niobium carbide, silicon carbide, and friction materials, which is applied in the field of friction material preparation, can solve problems such as hidden dangers of safety and reduced friction performance, and achieve the effects of improving wear resistance and high manufacturing cost.

Inactive Publication Date: 2016-03-30
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 into a slurry with a particle size of less than 0.3 μm and a content of 5% niobium carbide, place it in an ultrasonic cleaner and fill it with niobium carbide for 50 minutes, take it out and dry it to obtain a carbon fiber blanket filled with niobium carbide, slurry The material is an aqueous solution containing 1.5% ammonium polyacrylate with a pH value of 9;

[0021] (3) Pass the above-mentioned filled niobium 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 trichlor...

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 carburized carbon fiber blanket into a slurry with a particle size of less than 0.3 μm and a content of 12% niobium carbide, place it in an ultrasonic cleaner and fill it with niobium carbide for 40 minutes, take it out and dry it to obtain a carbon fiber blanket filled with niobium carbide, slurry The material is an aqueous solution containing 1% ammonium polyacrylate with a pH value of 10;

[0027] (3) Pass the above-mentioned filled niobium carbide 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 trichlo...

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 carburized carbon fiber blanket into a slurry with a particle size of less than 0.3 μm and a content of 20% niobium carbide, place it in an ultrasonic cleaner and fill it with niobium carbide for 30 minutes, take it out and dry it to obtain a carbon fiber blanket filled with niobium carbide, slurry The material is an aqueous solution containing 0.5% ammonium polyacrylate with a pH value of 11;

[0033] (3) Pass the above-mentioned filled niobium 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 tri...

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Abstract

The invention discloses a preparation method of an ultrasonic-dispersion niobium carbide and silicon carbide-carbon fiber friction material. The preparation method is characterized in that after performing carburization treatment on a graphited carbon fiber blanket with the density being from 0.1 to 1.8g / cm<3>, performing ultrasonic-dispersion niobium carbide filling treatment, then performing silicon carbide deposition treatment, then performing burying siliconizing treatment, and then performing nitrogen treatment under nitrogen atmosphere, so as to prepare the ultrasonic-dispersion niobium carbide and silicon carbide-carbon fiber friction material. According to the preparation method provided by the invention, the preparation of the friction material is realized by adopting the graphited carbon fiber blanket through the steps of carburization, niobium carbide filling, silicon carbide deposition, burying siliconizing, nitridation and the like, the prepared friction material is high in strength, high in toughness, and high in friction performance and is a friction material suitable for 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): C04B35/80C04B35/56C04B35/565C04B35/584C04B35/634C04B35/65C04B35/622
CPCC04B35/5607C04B35/565C04B35/584C04B35/622C04B35/63424C04B35/65C04B35/806C04B2235/428C04B2235/46
Inventor 唐竹兴
Owner SHANDONG UNIV OF TECH
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