Method for preparing ultrasonic dispersion zirconium diboride silicon carbide-carbon fiber friction material
A zirconium boride silicon carbide, friction material technology, applied in ceramic products, applications, household appliances, etc., can solve problems such as hidden safety hazards and reduced friction performance, and achieve the effect of improving wear resistance and high manufacturing costs
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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-mentioned carburized carbon fiber blanket into a slurry with a particle size of less than 0.3 μm and a content of 5% zirconium boride, place it in an ultrasonic cleaner and fill it with zirconium boride for 50 minutes, take it out and dry it to obtain a zirconium boride-filled carbon fiber Blanket, the slurry is an aqueous solution containing 1.5% ammonium polyacrylate with a pH value of 9;
[0021] (3) Pass the above-mentioned filled zirconium 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 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-mentioned carburized carbon fiber blanket into a slurry with a particle size of less than 0.3 μm and a content of 12% zirconium boride, place it in an ultrasonic cleaner and fill it with zirconium boride for 40 minutes, take it out and dry it to obtain a zirconium boride-filled carbon fiber blanket, the slurry is an aqueous solution containing 1% ammonium polyacrylate with a pH value of 10;
[0027] (3) Pass the above-mentioned filled zirconium 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 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-mentioned carburized carbon fiber blanket into a slurry with a particle size of less than 0.3 μm and a content of 20% zirconium boride, place it in an ultrasonic cleaner and fill it with zirconium boride for 30 minutes, take it out and dry it to obtain a zirconium boride-filled carbon fiber blanket, the slurry is an aqueous solution containing 0.5% ammonium polyacrylate with a pH value of 11;
[0033] (3) Pass the above-mentioned filled zirconium boride 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 trichl...
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