CN105481456B - Ultrasonic wave disperses the preparation method of ramet boron carbide carbon fiber friction material - Google Patents
Ultrasonic wave disperses the preparation method of ramet boron carbide carbon fiber friction material Download PDFInfo
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- CN105481456B CN105481456B CN201610014387.5A CN201610014387A CN105481456B CN 105481456 B CN105481456 B CN 105481456B CN 201610014387 A CN201610014387 A CN 201610014387A CN 105481456 B CN105481456 B CN 105481456B
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Abstract
Ultrasonic wave disperses the preparation method of ramet boron carbide carbon fiber friction material, it is characterised in that by density is 0.1 ~ 1.8g/cm3Graphited carbon fiber blanket carries out depositing silicon boron processing after carrying out Carburization Treatment, ultrasonic wave is carried out again disperses ramet filling processing, carry out being embedded to siliconising processing again, then the scattered ramet boron carbide carbon fiber friction material of ultrasonic wave is made in nitrogen treatment in nitrogen atmosphere.The present invention is to realize the preparation of friction material by carburizing, depositing silicon silicon, filling ramet, the embedment step such as siliconising and nitridation using graphitized carbon fibre blanket, prepared friction material high intensity, high tenacity, high frictional behaviour, are the friction materials for adapting to various weather conditions.
Description
Technical field
The present invention relates to a kind of preparation method of the compound friction material of carbon fiber and ceramic material, belong to composite system
Standby technical field.
Background technology
Friction material is at present mainly using carbon fiber and carbon(C/C)Composite is wear-resisting due to C/C composites
Performance is relatively low, and people are seeking the preparation method of the higher friction material of anti-wear performance.In addition, C/C composites exist
In moist environment, its frictional behaviour can be reduced, and serious potential safety hazard is brought to using.
The content of the invention
It can overcome drawbacks described above it is an object of the invention to provide one kind, realize preparation higher intensity, higher frictional behaviour
And adapt to the preparation method of the friction material of various weather conditions.Its technical scheme is:
It by density is 0.1 ~ 1.8 g/ that the preparation method that ultrasonic wave disperses ramet boron carbide-carbon fiber friction material, which is,
cm3Graphited carbon fiber blanket carries out depositing silicon boron processing after carrying out Carburization Treatment, then carries out the scattered ramet of ultrasonic wave and fill out
Fill processing, then carry out being embedded to siliconising processing, then in nitrogen atmosphere nitrogen treatment be made ultrasonic wave disperse ramet boron carbide-
Carbon fiber friction material, comprise the following steps that:
(1)It is 0.1 ~ 1.8g/cm by density3Graphited carbon fiber blanket be passed through at a temperature of 900 ~ 1100 DEG C propane flammable gas and
The mixed gas of nitrogen, propane flammable gas:The mol ratio of nitrogen is 1:4 ~ 6, flow control in 50 ~ 600ml/min, Carburization Treatment 10 ~
Obtain carburizing carbon fiber blanket within 24 hours;
(2)Above-mentioned carburizing carbon fiber blanket is passed through boron chloride, methane, hydrogen and argon gas at a temperature of 900 ~ 1100 DEG C
Mixed gas, boron chloride:Methane:Hydrogen:The mol ratio of argon gas is 1:1~2:3~6:4 ~ 6, flow is controlled in 50 ~ 600ml/
Min, depositing silicon boron handle 10 ~ 24 hours and obtain depositing silicon boron carbon fiber blanket;
(3)Above-mentioned depositing silicon boron carbon fiber blanket is immersed into granularity and is less than the slurry that 0.3 μm of content is 5 ~ 20% ramets
In, it is placed in ultrasonic cleaner and fills ramet processing 30 ~ 50 minutes, takes out and filling ramet carbon fiber is made after drying
Blanket, wherein, slurry is containing the aqueous solution that 0.5 ~ 1.5%pH of ammonium polyacrylate values are 9 ~ 11;
(4)Above-mentioned filling ramet carbon fiber blanket is embedded in siliconising material, 1500 ~ 1800 DEG C of the temperature under vacuum atmosphere
Lower siliconising handles 3 ~ 5 hours obtained siliconising carbon fiber blankets, wherein, siliconising material is silica flour 30 ~ 50% and a diameter of 0.5 ~ 3mm carbon granules
It is made after the uniform combination drying of polyvinyl alcohol water solution that 50 ~ 70% additional 5 ~ 15% concentration of mixture is 0.2 ~ 0.6%;
(5)By above-mentioned siliconising carbon fiber blanket at a temperature of 1350 ~ 1700 DEG C 10 ~ 24 hours obtained ultrasonic waves of nitrogen treatment
Scattered ramet boron carbide-carbon fiber friction material.
Compared with prior art, its advantage is the present invention:
1st, the carbon fiber blanket that uses of the present invention is graphited carbon fiber blanket, or graphited needled carbon tapetum fibrosum, or stone
The weaving carbon fiber cloth of inkization, or graphited 3 D weaving carbon fiber knit block;
2nd, friction material prepared by the present invention is rubbed by the compound a kind of high intensity of carbon fiber and ramet, silicon nitride, height
Wipe the friction material under performance, the various weather conditions of adaptation;
3rd, the system of friction material is realized by carburizing, depositing silicon boron, filling ramet, the embedment step such as siliconising and nitridation
It is standby, two steps of carburizing and depositing silicon boron be in order to protect carbon fiber surface not to be damaged and carbon fiber surface assign charcoal
Coating and boron carbide coating, because boron carbide coating can stop that silicon steam penetrates into during siliconising, boron carbide coating is once
Seepage, carbide coatings further stop silicon steam with silicon steam reaction generation carborundum, so as to protect carbon fiber surface not by broken
It is bad;
4th, carbon fiber blanket has the very high porosity, depends merely on carburizing and depositing silicon boron may require that and be lot more time to reach
Densification, manufacturing cost are very high.Will be very using the space of filling ramet and the method filling carbon fiber blanket for being embedded to siliconising
It is convenient, it is time saving and energy saving, while fill ramet and can further improve the anti-wear performance of friction material;
5th, the present invention produces microvesicle in the slurry using the effect of ultrasonic acoustic, when acoustic pressure or the sound intensity reach to a certain degree
When, microvesicle will expand rapidly, and then closure, the moment of microvesicle closure produce shock wave, make to produce about around microvesicle suddenly again
1012pa pressure, tantalum carbide particles are forced to be filled into the space of depositing silicon silicon-carbon tapetum fibrosum, reach the purpose of calking;
6th, ramet filling processing is disperseed using slurry, tantalum carbide particles suspendability can be effectively improved, improve filling
Tantalum carbide particles are firmly combined together by efficiency, the silicon nitride generated in nitridation process;
7th, it is 1420 DEG C or so because the metallic silicon fusing point of infiltration is relatively low, the temperature of friction material working face is instantaneously up near
2000 DEG C, metallic silicon is nitrogenized into generation silicon nitride, the friction material of microcellular structure is formed, friction material work can be increased substantially
Make the tolerable temperature in face, improve the service life of friction material.
Embodiment
Embodiment 1
(1)It is 1.8g/cm by density3Graphited carbon fiber blanket is passed through the mixed of propane flammable gas and nitrogen at a temperature of 900 DEG C
Close gas, propane flammable gas:The mol ratio of nitrogen is 1:4, flow control obtains carburizing carbon in 24 hours in 50ml/min, Carburization Treatment
Tapetum fibrosum;
(2)Above-mentioned carburizing carbon fiber blanket is passed through to the mixing of boron chloride, methane, hydrogen and argon gas at a temperature of 900 DEG C
Gas, boron chloride:Methane:Hydrogen:The mol ratio of argon gas is 1:1:3:4, flow is controlled at 50ml/min, depositing silicon boron
Reason obtains depositing silicon boron carbon fiber blanket in 24 hours;
(3)Above-mentioned depositing silicon boron carbon fiber blanket is immersed into granularity to be less than in the ramet slurry that 0.3 μm of content is 5%, put
Ramet is filled in ultrasonic cleaner to handle 50 minutes, takes out and filling ramet carbon fiber blanket is made after drying, wherein, slurry
Expect the aqueous solution for being 9 for the values of 0.5%pH containing ammonium polyacrylate;
(4)Above-mentioned filling ramet carbon fiber blanket is embedded in siliconising material, oozed under vacuum atmosphere at a temperature of 1500 DEG C
5 hours obtained siliconising carbon fiber blankets of silicon, wherein, siliconising material is silica flour 30% and additional 5% concentration of a diameter of 0.5mm carbon granules 70% is
0.2% polyvinyl alcohol water solution is dried after uniformly mixing and is made;
(5)By above-mentioned siliconising carbon fiber blanket at a temperature of 1700 DEG C 10 hours obtained ramet boron carbides of nitrogen treatment-
Carbon fiber friction material.
Embodiment 2
(1)It is 0.8g/cm by density3Graphited carbon fiber blanket is passed through the mixed of propane flammable gas and nitrogen at a temperature of 1000 DEG C
Close gas, propane flammable gas:The mol ratio of nitrogen is 1:5, flow control obtains carburizing in 18 hours in 350ml/min, Carburization Treatment
Carbon fiber blanket;
(2)Above-mentioned carburizing carbon fiber blanket is passed through to the mixing of boron chloride, methane, hydrogen and argon gas at a temperature of 1000 DEG C
Gas, boron chloride:Methane:Hydrogen:The mol ratio of argon gas is 1:1.5:4.5:5, flow control is in 350 ml/min, deposition carbon
Change boron and handle 17 hours acquisition depositing silicon boron carbon fiber blankets;
(3)Above-mentioned depositing silicon boron carbon fiber blanket is immersed into granularity to be less than in the ramet slurry that 0.3 μm of content is 12%,
It is placed in ultrasonic cleaner and fills ramet processing 40 minutes, takes out and filling ramet carbon fiber blanket is made after drying, wherein,
Slurry is the aqueous solution that the values of 1%pH containing ammonium polyacrylate are 10;
(4)Above-mentioned filling ramet carbon fiber blanket is embedded in siliconising material, oozed under vacuum atmosphere at a temperature of 1650 DEG C
4 hours obtained siliconising carbon fiber blankets of silicon, wherein, siliconising material is silica flour 40% and additional 10% concentration of a diameter of 2mm carbon granules 60% is
0.4% polyvinyl alcohol water solution is dried after uniformly mixing and is made;
(5)By above-mentioned siliconising carbon fiber blanket at a temperature of 1550 DEG C 18 hours obtained ramet boron carbides of nitrogen treatment-
Carbon fiber friction material.
Embodiment 3
(1)It is 0.1g/cm by density3Graphited carbon fiber blanket is passed through the mixed of propane flammable gas and nitrogen at a temperature of 1100 DEG C
Close gas, propane flammable gas:The mol ratio of nitrogen is 1:6, flow control obtains carburizing in 10 hours in 600ml/min, Carburization Treatment
Carbon fiber blanket;
(2)Above-mentioned carburizing carbon fiber blanket is passed through to the mixing of boron chloride, methane, hydrogen and argon gas at a temperature of 1100 DEG C
Gas, boron chloride:Methane:Hydrogen:The mol ratio of argon gas is 1:2:6:6, flow is controlled in 600ml/min, depositing silicon boron
Processing obtains depositing silicon boron carbon fiber blanket in 10 hours;
(3)Above-mentioned depositing silicon boron carbon fiber blanket is immersed into granularity to be less than in the ramet slurry that 0.3 μm of content is 20%,
It is placed in ultrasonic cleaner and fills ramet processing 30 minutes, takes out and filling ramet carbon fiber blanket is made after drying, wherein,
Slurry is the aqueous solution that the values of 1.5%pH containing ammonium polyacrylate are 11;
(4)Above-mentioned filling ramet carbon fiber blanket is embedded in siliconising material, oozed under vacuum atmosphere at a temperature of 1800 DEG C
3 hours obtained siliconising carbon fiber blankets of silicon, wherein, siliconising material is silica flour 50% and additional 15% concentration of a diameter of 3mm carbon granules 50% is
0.6% polyvinyl alcohol water solution is dried after uniformly mixing and is made;
(5)By above-mentioned siliconising carbon fiber blanket at a temperature of 1350 DEG C 24 hours obtained ramet boron carbides of nitrogen treatment-
Carbon fiber friction material.
Claims (1)
1. ultrasonic wave disperses the preparation method of ramet boron carbide-carbon fiber friction material, it is characterised in that by density be 0.1 ~
1.8g/cm3Graphited carbon fiber blanket carries out depositing silicon boron processing after carrying out Carburization Treatment, then carries out the scattered carbonization of ultrasonic wave
Tantalum filling is handled, then carries out being embedded to siliconising processing, and then the scattered ramet carbon of ultrasonic wave is made in nitrogen treatment in nitrogen atmosphere
Change boron-carbon fiber friction material, comprise the following steps that:
(1)It is 0.1 ~ 1.8g/cm by density3Graphited carbon fiber blanket is passed through propane flammable gas and nitrogen at a temperature of 900 ~ 1100 DEG C
Mixed gas, propane flammable gas:The mol ratio of nitrogen is 1:4 ~ 6, flow control is small in 50 ~ 600ml/min, Carburization Treatment 10 ~ 24
When obtain carburizing carbon fiber blanket;
(2)Above-mentioned carburizing carbon fiber blanket is passed through to the mixing of boron chloride, methane, hydrogen and argon gas at a temperature of 900 ~ 1100 DEG C
Gas, boron chloride:Methane:Hydrogen:The mol ratio of argon gas is 1:1~2:3~6:4 ~ 6, mixed gas flow control 50 ~
600ml/min, depositing silicon boron handle 10 ~ 24 hours and obtain depositing silicon boron carbon fiber blanket;
(3)Above-mentioned depositing silicon boron carbon fiber blanket is immersed into granularity and is less than 0.3 μm of content in the slurry of 5 ~ 20% ramets, to put
Ramet is filled in ultrasonic cleaner to handle 30 ~ 50 minutes, takes out and filling ramet carbon fiber blanket is made after drying, its
In, slurry is containing the aqueous solution that 0.5 ~ 1.5%pH of ammonium polyacrylate values are 9 ~ 11;
(4)Above-mentioned filling ramet carbon fiber blanket is embedded in siliconising material, oozed under vacuum atmosphere at a temperature of 1500 ~ 1800 DEG C
Silicon handles 3 ~ 5 hours obtained siliconising carbon fiber blankets, wherein, siliconising material be silica flour 30 ~ 50% and a diameter of 0.5 ~ 3mm carbon granules 50 ~
It is made after the uniform combination drying of polyvinyl alcohol water solution that 70% additional 5 ~ 15% concentration of mixture is 0.2 ~ 0.6%;
(5)By above-mentioned siliconising carbon fiber blanket, 10 ~ 24 hours obtained ultrasonic waves of nitrogen treatment disperse at a temperature of 1350 ~ 1700 DEG C
Ramet boron carbide-carbon fiber friction material.
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CN201610014387.5A CN105481456B (en) | 2016-01-11 | 2016-01-11 | Ultrasonic wave disperses the preparation method of ramet boron carbide carbon fiber friction material |
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CN201610014387.5A CN105481456B (en) | 2016-01-11 | 2016-01-11 | Ultrasonic wave disperses the preparation method of ramet boron carbide carbon fiber friction material |
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CN1850730A (en) * | 2006-05-26 | 2006-10-25 | 中国科学院上海硅酸盐研究所 | Method for preparing carbon-fiber reinforced silicon carbonate base composite by gas-phase siliconizing technology |
CN101224989A (en) * | 2008-01-29 | 2008-07-23 | 中国人民解放军国防科学技术大学 | Two-dimensional fiber cloth reinforced composite material and preparation method thereof |
CN101503305A (en) * | 2009-02-03 | 2009-08-12 | 西北工业大学 | Process for preparing self-sealing silicon carbide ceramic based composite material |
CN103724035A (en) * | 2013-07-23 | 2014-04-16 | 太仓派欧技术咨询服务有限公司 | Densification method for carbon fiber reinforced silicon carbonitride ceramic composite material |
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CN1850730A (en) * | 2006-05-26 | 2006-10-25 | 中国科学院上海硅酸盐研究所 | Method for preparing carbon-fiber reinforced silicon carbonate base composite by gas-phase siliconizing technology |
CN101224989A (en) * | 2008-01-29 | 2008-07-23 | 中国人民解放军国防科学技术大学 | Two-dimensional fiber cloth reinforced composite material and preparation method thereof |
CN101503305A (en) * | 2009-02-03 | 2009-08-12 | 西北工业大学 | Process for preparing self-sealing silicon carbide ceramic based composite material |
CN103724035A (en) * | 2013-07-23 | 2014-04-16 | 太仓派欧技术咨询服务有限公司 | Densification method for carbon fiber reinforced silicon carbonitride ceramic composite material |
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