Preparation method of synthetic grease dispersed tungsten boride silicon carbide-carbon fiber friction material
A technology of tungsten boride silicon carbide and friction materials, which is applied in the field of composite material preparation, can solve the problems of reduced friction performance and potential safety hazards, and achieve the effect of improving wear resistance and high manufacturing cost
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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 grease slurry with a particle size of less than 0.3 μm and a content of 5% tungsten boride, place it in an ultrasonic cleaner and fill it with tungsten boride for 50 minutes, take it out and dry it to obtain a filled boride Tungsten carbon fiber blanket, synthetic fat slurry is ethanol solution containing 5% synthetic fat;
[0021] (3) Pass the above-mentioned filled tungsten boride carbon fiber blanket into a mixed gas of trichloromethylsilane gas, hydrogen gas and argon gas at a temperature of 900 ° C. The molar ratio of trichloromethylsilane gas: hydro...
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 synthetic grease slurry with a particle size of less than 0.3 μm and a content of 12% tungsten boride, place it in an ultrasonic cleaner and fill it with tungsten boride for 40 minutes, take it out and dry it to obtain a filled boride Tungsten carbon fiber blanket, synthetic fat slurry is an ethanol solution containing 12% synthetic fat;
[0027] (3) Pass the above-mentioned filled tungsten boride carbon fiber blanket into a mixed gas of trichloromethylsilane gas, hydrogen gas and argon gas at a temperature of 1000 ° C. The molar ratio of trichloromethyls...
Embodiment 3
[0031] (1) Set the density to 0.1g / cm 3 The graphitized carbon fiber blanket is passed into 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 in a synthetic grease slurry with a particle size of less than 0.3 μm and a content of 20% tungsten boride, place it in an ultrasonic cleaner and fill it with tungsten boride for 30 minutes, take it out and dry it to obtain a filled boride Tungsten carbon fiber blanket, synthetic fat slurry is ethanol solution containing 20% synthetic fat;
[0033] (3) Pass the above-mentioned filled tungsten 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 trichlorome...
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