Preparing method of synthetic-fat dispersion tungsten boride and boron carbide-carbon fiber friction material

A tungsten boride boron carbide and friction material technology, applied in the field of friction material preparation, can solve the problems of reduced friction performance, potential safety hazards, etc., and achieve the effects 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 reduc

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 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) Pass the above carburized carbon fiber blanket into a mixed gas of boron trichloride, methane, hydrogen and argon at a temperature of 900°C. The molar ratio of boron trichloride: methane: hydrogen: argon is 1:1: 3:4, the flow rate is controlled at 50ml / min, the deposited boron carbide is treated for 24 hours to obtain the deposited boron carbide carbon fiber blanket;

[0021] (3) The above-mentioned deposited boron carbide carbon fiber blanket is immersed in a grease slurry with a particle size of less than 0.3 μm and a content of 5% tungsten boride, placed in an ultrasonic cleaner, filled with tungsten boride for 50 minutes,...

Example Embodiment

[0024] Example 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) Pass the above carburized carbon fiber blanket into a mixed gas of boron trichloride, methane, hydrogen and argon at a temperature of 1000°C. The molar ratio of boron trichloride: methane: hydrogen: argon is 1:1.5: 4.5:5, the flow rate is controlled at 350ml / min, the deposited boron carbide is treated for 18 hours to obtain the deposited boron carbide carbon fiber blanket;

[0027] (3) The above-mentioned deposited boron carbide carbon fiber blanket is immersed in a grease slurry with a particle size of less than 0.3μm and a content of 12% tungsten boride, placed in an ultrasonic cleaner and filled with tungsten boride f...

Example Embodiment

[0030] Example 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) Pass the above carburized carbon fiber blanket into a mixed gas of boron trichloride, methane, hydrogen and argon at a temperature of 1100°C. The molar ratio of boron trichloride:methane:hydrogen:argon is 1:2: 6:6, the flow rate is controlled at 600ml / min, the deposited boron carbide is treated for 10 hours to obtain the deposited boron carbide carbon fiber blanket;

[0033] (3) The above-mentioned deposited boron carbide carbon fiber blanket is immersed in a grease slurry with a particle size of less than 0.3 μm and a content of 20% tungsten boride, placed in an ultrasonic cleaner and filled with tungsten boride for 30...

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Abstract

The invention discloses a preparing method of a synthetic-fat dispersion tungsten boride and boron carbide-carbon fiber friction material. The preparing method is characterized by including the steps that a graphitized carbon fiber blanket with the density of 0.1-1.8 g/cm<3> is subjected to boron carbide deposition after being subjected to carburization; synthetic-fat dispersion tungsten boride filling is carried out, then embedding boronizing is carried out, nitridation is carried out in nitrogen atmosphere, and the synthetic-fat dispersion tungsten boride and boron carbide-carbon fiber friction material is prepared. According to the preparing method, the friction material is prepared from the graphitized carbon fiber blanket through the steps of carburization, boron carbide deposition, tungsten boride filling, embedding boronizing, nitridation and the like; the prepared friction material is high in strength, tenacity and friction performance, and is a friction material adapting to various climate 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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IPC IPC(8): C04B35/80C04B35/584C04B35/563C04B35/58C04B35/632C04B35/65C04B35/622
CPCC04B35/563C04B35/58064C04B35/584C04B35/622C04B35/632C04B35/65C04B35/806C04B2235/428C04B2235/46C04B2235/48
Inventor 唐竹兴
Owner SHANDONG UNIV OF TECH
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