Method for preparing ultrasonic dispersion tantalum boride silicon carbide-carbon fiber friction material

A technology of tantalum boride silicon carbide and friction material, which is applied in the field of preparation of friction material, 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: 2016-04-13
SHANDONG UNIV OF TECH
2 Cites 0 Cited by

AI-Extracted Technical Summary

Problems solved by technology

In addition, the friction performance of C/C composite materials will be reduc...
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Abstract

A method for preparing an ultrasonic dispersion tantalum boride silicon carbide-carbon fiber friction material is characterized in that a graphitized carbon fiber blanket with the density being 0.1-1.8 g/cm<3> is subjected to carburizing treatment, then subjected to ultrasonic dispersion tantalum boride filling treatment, subjected to silicon carbide deposition and subjected to embedding siliconizing, and then nitridation is carried out in the nitrogen atmosphere to prepare the ultrasonic dispersion tantalum boride silicon carbide-carbon fiber friction material. According to the method, the graphitized carbon fiber blanket is adopted, and the friction material is prepared through the steps of carburization, tantalum boride filling, silicon carbide deposition, embedding siliconizing, nitridation and the like. The prepared friction material is high in strength, toughness and friction performance and can adapt to various climatic conditions.

Application Domain

Ceramicware

Technology Topic

Carbide siliconFiber +5

Examples

  • Experimental program(3)

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) The above carburized carbon fiber blanket is immersed in a slurry with a particle size of less than 0.3μm and a content of 5% tantalum boride, placed in an ultrasonic cleaner and filled with tantalum boride for 50 minutes, then taken out and dried to prepare filled tantalum boride carbon fiber Blanket, the slurry is an aqueous solution containing 1.5% ammonium polyacrylate with a pH of 9;
[0021] (3) Pass the above-mentioned filled tantalum boride carbon fiber blanket into a mixed gas of trichloromethylsilane, hydrogen and argon at a temperature of 900°C. The molar ratio of trichloromethylsilane: hydrogen: argon is 1: 5:5, the flow rate is controlled at 50ml/min, the deposited silicon carbide is treated for 24 hours to obtain the deposited silicon carbide carbon fiber blanket;
[0022] (4) The above-mentioned deposited silicon carbide carbon fiber blanket is buried in the silicon infiltrating material, and siliconized in a vacuum atmosphere at a temperature of 1500 ℃ for 5 hours to obtain a silicon infiltrated carbon fiber blanket. The silicon infiltrating material is 30% silicon powder and the diameter It is made by uniformly mixing 70% 0.5mm carbon particles and 5% 0.2% polyvinyl alcohol aqueous solution and then drying;
[0023] (5) Nitriding the above siliconized carbon fiber blanket at a temperature of 1700° C. for 10 hours to prepare a tantalum boride silicon carbide-carbon fiber friction material.

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) The above carburized carbon fiber blanket is immersed in a slurry with a particle size of less than 0.3μm and a content of 12% tantalum boride, placed in an ultrasonic cleaner and filled with tantalum boride for 40 minutes, taken out and dried to prepare a filled tantalum boride carbon fiber Blanket, the slurry is an aqueous solution containing 1% ammonium polyacrylate with a pH of 10;
[0027] (3) Pass the above-mentioned filled tantalum boride carbon fiber blanket with a mixture of trichloromethylsilane gas, hydrogen gas and argon gas at a temperature of 1000°C. The molar ratio of trichloromethylsilane gas: hydrogen: argon is 1: 4:4, the flow rate is controlled at 350ml/min, the deposited silicon carbide is treated for 18 hours to obtain the deposited silicon carbide carbon fiber blanket;
[0028] (4) The above-mentioned deposited silicon carbide carbon fiber blanket is buried in the silicon infiltrating material, and the silicon infiltrating carbon fiber blanket is made by siliconizing at a temperature of 1650°C in a vacuum atmosphere for 4 hours, wherein the silicon infiltrating material is 40% silicon powder and the diameter is 2mm carbon particles 60% plus 10% 0.4% polyvinyl alcohol aqueous solution uniformly mixed and dried;
[0029] (5) Nitriding the above siliconized carbon fiber blanket at a temperature of 1550°C for 18 hours to prepare a tantalum boride silicon carbide-carbon fiber friction material.

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) The above carburized carbon fiber blanket is immersed in a slurry with a particle size of less than 0.3μm and a content of 20% tantalum boride, placed in an ultrasonic cleaner and filled with tantalum boride for 30 minutes, taken out and dried to prepare filled tantalum boride carbon fiber Blanket, the slurry is an aqueous solution containing 0.5% ammonium polyacrylate with a pH of 11;
[0033] (3) Pass the above-mentioned filled tantalum boride carbon fiber blanket with a mixture of trichloromethylsilane gas, hydrogen gas and argon gas at a temperature of 1100°C. The molar ratio of trichloromethylsilane gas: hydrogen: argon is 1: 3:3, the flow rate is controlled at 600ml/min, and the deposited silicon carbide is treated for 10 hours to obtain the deposited silicon carbide carbon fiber blanket;
[0034] (4) The above-mentioned deposited silicon carbide carbon fiber blanket is buried in the silicon infiltrating material, and the silicon infiltrating carbon fiber blanket is made by siliconizing at a temperature of 1800°C in a vacuum atmosphere for 3 hours, wherein the silicon infiltrating material is 50% silicon powder and the diameter is 3mm carbon particles 50% plus 15% 0.6% polyvinyl alcohol aqueous solution uniformly mixed and dried;
[0035] (5) Nitriding the above-mentioned siliconized carbon fiber blanket at a temperature of 1350°C for 24 hours to prepare a tantalum boride silicon carbide-carbon fiber friction material.

PUM

PropertyMeasurementUnit
Diameter0.5mm

Description & Claims & Application Information

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