Preparing method of synthetic-fat dispersion niobium boride and silicon carbide-carbon fiber friction material
A technology of boride niobium silicon carbide and friction material, which is applied in the field of preparation of friction material, can solve the problems of reduced friction performance and potential safety hazards, and achieves the effects of improving wear resistance and high manufacturing cost
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[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 grease slurry with a particle size of less than 0.3μm and a content of 5% niobium boride, placed in an ultrasonic cleaner, filled with niobium boride for 50 minutes, and taken out and dried to obtain a filled boride Niobium carbon fiber blanket, the synthetic resin slurry is an ethanol solution containing 5% synthetic resin;
[0021] (3) Pass the above-mentioned carbon fiber blanket filled with niobium boride 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, th...
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 carburized carbon fiber blanket is immersed in a grease slurry with a particle size of less than 0.3μm and a content of 12% niobium boride, placed in an ultrasonic cleaner, filled with niobium boride for 40 minutes, and taken out and dried to obtain a filled boride Niobium carbon fiber blanket, the synthetic resin slurry is an ethanol solution containing 12% synthetic resin;
[0027] (3) Pass the above-mentioned carbon fiber blanket filled with niobium boride into a mixed gas of trichloromethylsilane, hydrogen and argon at a temperature of 1000°C. The molar ratio of trichloromethylsilane: hydrogen: argon is 1: 4:4, ...
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 carburized carbon fiber blanket is immersed in a grease slurry with a particle size of less than 0.3μm and a content of 20% niobium boride, placed in an ultrasonic cleaner and filled with niobium boride for 30 minutes, taken out and dried to obtain a filled boride Niobium carbon fiber blanket, the synthetic resin slurry is an ethanol solution containing 20% synthetic resin;
[0033] (3) Pass the above-mentioned carbon fiber blanket filled with niobium boride into a mixed gas of trichloromethylsilane, hydrogen and argon at a temperature of 1100°C. The molar ratio of trichloromethylsilane: hydrogen: argon is 1: 3:3...
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