CN105418110B - Ethyl alcohol disperses the preparation method of tantalum boride boron carbide-carbon fiber friction material - Google Patents
Ethyl alcohol disperses the preparation method of tantalum boride boron carbide-carbon fiber friction material Download PDFInfo
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- CN105418110B CN105418110B CN201610014309.5A CN201610014309A CN105418110B CN 105418110 B CN105418110 B CN 105418110B CN 201610014309 A CN201610014309 A CN 201610014309A CN 105418110 B CN105418110 B CN 105418110B
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Abstract
Ethyl alcohol disperses the preparation method of tantalum boride boron carbide carbon fiber friction material, which is characterized in that by density be 0.1 ~ 1.8g/cm3Graphited carbon fiber blanket carries out depositing silicon boron processing after carrying out Carburization Treatment, ethyl alcohol is carried out again disperses tantalum boride filling processing, embedment siliconising processing is carried out again, and then nitrogen treatment is made ethyl alcohol and disperses tantalum boride boron carbide carbon fiber friction material in nitrogen atmosphere.The present invention be using graphitized carbon fibre blanket by carburizing, depositing silicon silicon, filling tantalum boride, embedment siliconising and nitridation and etc. realize friction material preparation, prepared friction material high intensity, high tenacity, high frictional behaviour adapt to the friction material of various weather conditions.
Description
Technical field
The present invention relates to a kind of preparation methods of the compound friction material of carbon fiber and ceramic material, belong to composite material system
Standby technical field.
Background technology
Friction material is at present mainly using carbon fiber and carbon(C/C)Composite material is wear-resisting due to C/C composite materials
Performance is relatively low, and people are seeking the preparation method of the higher friction material of wear-resisting property.In addition, C/C composite materials exist
In moist environment, its frictional behaviour can reduce, and serious security risk is brought to using.
The content of the invention
It is an object of the invention to provide a kind of drawbacks described above, realization can be overcome to prepare higher intensity, higher frictional behaviour
And adapt to the preparation method of the friction material of various weather conditions.Its technical solution is:
The preparation method that ethyl alcohol disperses tantalum boride boron carbide-carbon fiber friction material be by density be 0.1 ~ 1.8 g/cm3
Graphited carbon fiber blanket carries out depositing silicon boron processing after carrying out Carburization Treatment, then carries out ethyl alcohol and disperse at tantalum boride filling
Reason, then embedment siliconising processing is carried out, then nitrogen treatment is made ethyl alcohol and disperses tantalum boride boron carbide-carbon fiber in nitrogen atmosphere
Friction material is as follows:
(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 molar ratio of nitrogen is 1:4 ~ 6, flow control in 50 ~ 600ml/min, Carburization Treatment 10 ~
24 obtain carburizing carbon fiber blanket when small;
(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 molar ratio of argon gas is 1:1~2:3~6:4 ~ 6, flow control is in 50 ~ 600ml/
Min, depositing silicon boron processing 10 ~ 24 obtain depositing silicon boron carbon fiber blanket when small;
(3)Above-mentioned depositing silicon boron carbon fiber blanket is immersed into granularity and is less than the alcohol slurry that 0.3 μm of content is 5 ~ 20% tantalum borides
It in material, is placed in ultrasonic cleaner and fills tantalum boride processing 30 ~ 50 minutes, filling tantalum boride carbon fiber is made after taking out drying
Blanket;
(4)Above-mentioned filling tantalum boride carbon fiber blanket is embedded in siliconising material, 1500 ~ 1800 DEG C of the temperature under vacuum atmosphere
Siliconising carbon fiber blanket is made when small in lower siliconising processing 3 ~ 5, 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)Ethyl alcohol point is made when nitrogen treatment 10 ~ 24 is small at a temperature of 1350 ~ 1700 DEG C for above-mentioned siliconising carbon fiber blanket
Dissipate tantalum boride boron carbide-carbon fiber friction material.
Compared with prior art, the present invention its advantage is:
1st, the carbon fiber blanket that the present invention uses is graphited carbon fiber blanket or graphited needled carbon tapetum fibrosum or stone
The weaving carbon fiber cloth or graphited 3 D weaving carbon fiber of inkization knit block;
2nd, friction material prepared by the present invention is rubbed by the compound a kind of high intensity of carbon fiber and tantalum boride, silicon nitride, height
Wipe the friction material under performance, the various weather conditions of adaptation;
3rd, by carburizing, depositing silicon boron, filling tantalum boride, embedment siliconising and nitridation and etc. realize friction material system
It is standby, two steps of carburizing and depositing silicon boron be in order to carbon fiber surface is protected 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
Leakage, carbide coatings further stop silicon steam with silicon steam reaction generation carborundum, so as to protect carbon fiber surface from 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, manufacture cost are very high.It will be very using the gap of filling tantalum boride and the method filling carbon fiber blanket for being embedded to siliconising
It is convenient, it is time saving and energy saving, while fill tantalum boride and can further improve the wear-resisting property of friction material;
5th, the present invention generates microvesicle in the slurry using the effect of ultrasonic acoustic, when acoustic pressure or the sound intensity reache a certain level
When, microvesicle will expand rapidly, then be closed suddenly again, and the moment that microvesicle is closed generates shock wave, makes to produce about around microvesicle
The pressure of boronation tantalum particle is filled into the gap of depositing silicon silicon-carbon tapetum fibrosum, achievees the purpose that calking by the pressure of 1012pa;
6th, tantalum boride filling processing is disperseed using ethyl alcohol slurry, boronation tantalum particle suspendability can be effectively improved, improved
Boronation tantalum particle is firmly combined together by charging efficiency, the silicon nitride generated in nitridation process;
7th, it is 1420 DEG C or so since 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.
Specific 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 molar ratio of nitrogen is 1:4, flow control is in 50ml/min, acquisition carburizing carbon when Carburization Treatment 24 is small
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 molar ratio of argon gas is 1:1:3:4, flow control is at 50ml/min, depositing silicon boron
Manage 24 it is small when 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 ethyl alcohol slurry that 0.3 μm of content is 5% tantalum boride
In, it is placed in ultrasonic cleaner and fills tantalum boride processing 50 minutes, filling tantalum boride carbon fiber blanket is made after taking out drying;
(4)Above-mentioned filling tantalum boride carbon fiber blanket is embedded in siliconising material, is oozed under vacuum atmosphere at a temperature of 1500 DEG C
Siliconising carbon fiber blanket is made in silicon 5 when small, wherein, siliconising material is silica flour 30% and 70% additional 5% concentration of a diameter of 0.5mm carbon granules is
0.2% polyvinyl alcohol water solution is dry after uniformly mixing to be made;
(5)By above-mentioned siliconising carbon fiber blanket be made when nitrogen treatment 10 is small at a temperature of 1700 DEG C tantalum boride boron carbide-
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 molar ratio of nitrogen is 1:5, flow control obtains carburizing in 350ml/min, Carburization Treatment 18 when small
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 molar ratio of argon gas is 1:1.5:4.5:5, flow control is in 350ml/min, deposition carbon
Change boron processing 17 obtains depositing silicon boron carbon fiber blanket when small;
(3)Above-mentioned depositing silicon boron carbon fiber blanket is immersed into granularity and is less than the ethyl alcohol slurry that 0.3 μm of content is 12% tantalum boride
In, it is placed in ultrasonic cleaner and fills tantalum boride processing 40 minutes, filling tantalum boride carbon fiber blanket is made after taking out drying;
(4)Above-mentioned filling tantalum boride carbon fiber blanket is embedded in siliconising material, is oozed under vacuum atmosphere at a temperature of 1650 DEG C
Siliconising carbon fiber blanket is made in silicon 4 when small, wherein, siliconising material is silica flour 40% and 60% additional 10% concentration of a diameter of 2mm carbon granules is
0.4% polyvinyl alcohol water solution is dry after uniformly mixing to be made;
(5)By above-mentioned siliconising carbon fiber blanket be made when nitrogen treatment 18 is small at a temperature of 1550 DEG C tantalum boride boron carbide-
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 molar ratio of nitrogen is 1:6, flow control obtains carburizing in 600ml/min, Carburization Treatment 10 when small
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 molar ratio of argon gas is 1:2:6:6, flow control is in 600ml/min, depositing silicon boron
Handle 10 it is small when 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 ethyl alcohol slurry that 0.3 μm of content is 20% tantalum boride
In, it is placed in ultrasonic cleaner and fills tantalum boride processing 30 minutes, filling tantalum boride carbon fiber blanket is made after taking out drying;
(4)Above-mentioned filling tantalum boride carbon fiber blanket is embedded in siliconising material, is oozed under vacuum atmosphere at a temperature of 1800 DEG C
Siliconising carbon fiber blanket is made in silicon 3 when small, wherein, siliconising material is silica flour 50% and 50% additional 15% concentration of a diameter of 3mm carbon granules is
0.6% polyvinyl alcohol water solution is dry after uniformly mixing to be made;
(5)By above-mentioned siliconising carbon fiber blanket be made when nitrogen treatment 24 is small at a temperature of 1350 DEG C tantalum boride boron carbide-
Carbon fiber friction material.
Claims (1)
1. ethyl alcohol disperses the preparation method of tantalum boride boron carbide-carbon fiber friction material, which is characterized in that by density for 0.1 ~
1.8g/cm3Graphited carbon fiber blanket carries out depositing silicon boron processing after carrying out Carburization Treatment, then carries out ethyl alcohol and disperse tantalum boride
Filling handle, then carry out embedment siliconising processing, then in nitrogen atmosphere nitrogen treatment be made ethyl alcohol disperse tantalum boride boron carbide-
Carbon fiber friction material is as follows:
(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 molar ratio of nitrogen is 1:4 ~ 6, in 50 ~ 600ml/min, Carburization Treatment 10 ~ 24 is small for flow control
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 molar ratio of argon gas is 1:1~2:3~6:4 ~ 6, mixed gas flow control 50 ~
600ml/min, depositing silicon boron processing 10 ~ 24 obtain depositing silicon boron carbon fiber blanket when small;
(3)Above-mentioned depositing silicon boron carbon fiber blanket is immersed into granularity and is less than the ethyl alcohol slurry that 0.3 μm of content is 5 ~ 20% tantalum borides
In, it is placed in ultrasonic cleaner and fills tantalum boride processing 30 ~ 50 minutes, filling tantalum boride carbon fiber is made after taking out drying
Blanket;
(4)Above-mentioned filling tantalum boride carbon fiber blanket is embedded in siliconising material, is oozed under vacuum atmosphere at a temperature of 1500 ~ 1800 DEG C
Siliconising carbon fiber blanket is made when small in silicon processing 3 ~ 5, wherein, siliconising material for 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)Ethyl alcohol is made when nitrogen treatment 10 ~ 24 is small at a temperature of 1350 ~ 1700 DEG C in above-mentioned siliconising carbon fiber blanket and disperses boron
Change tantalum boron carbide-carbon fiber friction material.
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101830703A (en) * | 2010-04-06 | 2010-09-15 | 中南大学 | Carbon fiber reinforced boron carbide composite material and preparation method thereof |
CN102617178A (en) * | 2012-04-16 | 2012-08-01 | 中国人民解放军国防科学技术大学 | C/SiC composite material, preparation method of composite material and friction plate |
CN103342570A (en) * | 2013-07-11 | 2013-10-09 | 山东宝纳新材料有限公司 | Method for preparing C/SiC composite material through low-cost fused silicon impregnation method |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101830703A (en) * | 2010-04-06 | 2010-09-15 | 中南大学 | Carbon fiber reinforced boron carbide composite material and preparation method thereof |
CN102617178A (en) * | 2012-04-16 | 2012-08-01 | 中国人民解放军国防科学技术大学 | C/SiC composite material, preparation method of composite material and friction plate |
CN103342570A (en) * | 2013-07-11 | 2013-10-09 | 山东宝纳新材料有限公司 | Method for preparing C/SiC composite material through low-cost fused silicon impregnation method |
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