CN104313518A - Ceramic composite material as well as preparation method and application thereof - Google Patents
Ceramic composite material as well as preparation method and application thereof Download PDFInfo
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Abstract
The invention relates to a ceramic composite material as well as a preparation method and an application thereof, belonging to the technical field of preparation of ceramic-based composite materials. The ceramic composite material comprises the following components in percentage by mass: 12-20% of carbon fibers, 0.01-0.1% of Ni, 20-45% of matrix carbon, 0.01-0.1% of SiC nano fibers, 25-40% of SiC matrix, 3-5% of Al4C3, 2-7% of Si and 2-10% of Al. The preparation method of the ceramic composite material comprises the following steps: by taking carbon fiber perform in the size of 0.10-0.65g/cm<3> as a raw material, removing gum and plating nickel, and then depositing SiC nano fibers on the carbon fiber perform; then, preparing a C/C-SiC porous body by virtue of chemical vapor infiltration; and performing graphitization treatment on the C/C-SiC porous body, and then performing fused silica infiltration to obtain the ceramic composite material. The ceramic composite material disclosed by the invention is processed and then prepared into a ceramic-based brake plate. The brake plate has the advantages of excellent mechanical performance, excellent oxidization resistance, abrasion resistance, wear resistance and the like, and is suitable for a transpiration tool with high speed and high energy load.
Description
Technical field
The present invention relates to a kind of ceramic composite and its preparation method and application; Belong to ceramic matric composite preparing technical field.
Background technology
Disc brake is also known as disc brake, and it has retarding disc, wheel cylinder, caliper, oil pipe etc. by hydrostatic control, main parts size.Disc brake rapid heat dissipation, lightweight, simple structure, easy to adjust.When vehicle is brought to a halt in high-speed travel state or repeatedly braked at short notice, the performance of brake not easily fails, so be more suitable for brake at a high speed.Particularly during high capacity, resistance to elevated temperatures is good, and braking effect is stablized.The transport facilitys such as automobile, panzer and train are used widely.
Present stage overwhelming majority retarding disc is with steel alloy manufacture and is fixed on wheel, with vehicle wheel rotation.There is following problem in actual applications: (1) wears no resistance, wearing and tearing are very fast; (2) radiating effect is not good, will cause brake strength because be heated and significantly sacrificing after repeatedly touching on the brake; (3) heavier-weight.
Ceramic base (carbon fibre reinforced ceramics matrix) friction materials has that quality is light, frictional behaviour good, corrosion-resistant, not by the advantage such as impact of Changes in weather, be a kind of brake material of extensive application prospect.Ceramic base retarding disc weight is lighter, meets the demand of breaking system lighting, under extreme working position, braking response can be allowed sensitiveer, possess better high temperature fatigue resistance performance.Therefore, the probability that transient heat distortion and permanent thermal distortion event occur will significantly reduce.But, because ceramic matrix in ceramic base retarding disc is based on SiC (generally its mass percentage is 20-60%), the relative hardness of SiC is only lower than diamond, it is a kind of emery wheel high-abrasive material of conventional polishing metal, therefore in braking procedure, SiC is easy to cutting abrasion self and brake(-holder) block, makes friction pair short for work-ing life.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide a kind of ceramic composite and its preparation method and application, effective solution is existing, and ceramic base retarding disc material wears no resistance, work-ing life is short, the problem of less stable.
A kind of ceramic composite of the present invention, comprises following composition by percentage to the quality:
Carbon fiber 12-20%; Be preferably 15-20%; More preferably 18-20%;
Matrix carbon 20-45%; Be preferably 30-36%; More preferably 32-34%;
Ni0.01-0.1%; Be preferably 0.04-0.1%; More preferably 0.05-0.08%;
SiC nanofiber 0.01-0.1%; Be preferably 0.04-0.01%; More preferably 0.06-0.08%;
SiC matrix 25-40%; Be preferably 28-37%; More preferably 32-35%;
Al
4c
33-5%; Be preferably 3.5-5%; More preferably 4-4.5%;
Si2-7%; Be preferably 2-5%; More preferably 3-5%;
Al2-10%; Be preferably 4-8%; More preferably 5-8%.
A kind of ceramic composite of the present invention, described nickel is evenly distributed on the surface of Carbon fibe; Described SiC nanofiber is evenly distributed between carbon fiber and matrix carbon; Described matrix carbon is coated on carbon fiber; Described SiC matrix, Al
4c
3, Si, Al are even to be uniformly distributed point on matrix carbon surface.
The preparation method of a kind of ceramic composite of the present invention, comprises the steps:
Step one is removed photoresist, nickel plating
Under protective atmosphere, be 0.10 ~ 0.65g/cm by density
3carbon fibe precast body to carry out removing photoresist nickel plating at least 5min after process, obtain the Carbon fibe precast body that surface uniform is distributed with nano nickel;
SiC nanofiber is prepared in step 2 chemical vapour deposition
Gaseous phase deposition stove is put into after the surface uniform of step one gained being distributed with the Carbon fibe precast body cleaning, drying of nano nickel, continue to pass into deposition gas, carrier gas and diluent gas, and to control stove internal gas pressure be 500 ~ 700Pa, carry out chemical vapour deposition at least 4 hours at 800 ~ 1100 DEG C, obtain the Carbon fibe precast body that surface uniform is distributed with SiC nanofiber (SiCNF); Described deposition gas is trichloromethyl silane;
Step 3 chemical vapor infiltration prepares C/C-SiCNF porous insert
The Carbon fibe precast body that surface uniform step 2 prepared is distributed with SiC nanofiber (SiCNF) puts into cvd furnace, pass into carbon-source gas and diluent gas, and to control stove internal gas pressure be 950-1050pa, chemical vapor infiltration process is carried out, until obtaining density is 1.0 ~ 1.6g/cm at 900 ~ 1100 DEG C
3c/C-SiCNF porous insert; The carbon that this process deposits, a part of as matrix carbon, when a part is as reaction fusion adhesion, carbon source needed for carbon pasc reaction;
Step 4 graphitization processing
Under protective atmosphere, be 1.0 ~ 1.6g/cm at 2000 ~ 2400 DEG C to step 3 gained density
3c/C-SiCNF porous insert carry out high-temperature heat treatment more than 15 hours, obtain graphited C/C-SiCNF porous insert;
Step 5 reaction fusion adhesion
Graphited C/C-SiCNF porous insert is embedded in the infiltration agent be made up of Si powder and Al powder, carries out reaction fusion adhesion at 1000 ~ 1500 DEG C, until obtaining density is 2.0 ~ 2.4g/cm
3ceramic matric composite; In described infiltration agent, the mass percentage of Si powder is the mass percentage of 70 ~ 90%, Al powder is 10 ~ 30%, and the mass ratio of infiltration agent used and C/C-SiCNF porous insert is 2 ~ 4:1.
The preparation method of a kind of ceramic composite of the present invention, the precast body of Carbon fibe described in step one is prepared by following method:
Monolayer carbon fiber 0 ° to be circulated superposition without latitude cloth, Carbon fibe tire net successively without latitude cloth, Carbon fibe tire net, Carbon fibe 90 °, then adopts the carrying out repeated puncture without latitude cloth and net tire to make density be 0.10 ~ 0.65g/cm for superposition of the lower Rubus delavayi Franch. of band
3carbon fibe felt after, by design size cutting, obtain Carbon fibe precast body.
The preparation method of a kind of ceramic composite of the present invention, process of removing photoresist described in step one is:
Under protective atmosphere, by precast body 480 ~ 520 DEG C of process 0.5 ~ 1.5 hour.
The preparation method of a kind of ceramic composite of the present invention, in step one; Described nickel plating is plating nickel plating, nickel plating plating solution used to be mass percentage concentration be 10% ~ 15% nickel sulfate solution, during nickel plating, control electric current is 10 ~ 15A, the temperature of plating solution is 30 ~ 40 DEG C, the time is 5 ~ 30min; Adopt direct supply as nickel plating power supply used at actual mechanical process.
The preparation method of a kind of ceramic composite of the present invention, after nickel plating, obtains the Carbon fibe precast body that surface uniform is distributed with nano nickel; The particle diameter of described nano nickel is 0.01-0.5 μm.
The preparation method of a kind of ceramic composite of the present invention, in step 2, described carrier gas is hydrogen; Described diluent gas is selected from least one in nitrogen, hydrogen; The mol ratio of the deposition gas passed into, carrier gas, diluent gas is 1:1 ~ 3:2 ~ 4.
The preparation method of a kind of ceramic composite of the present invention, in step 2, when SiC nanofiber is prepared in chemical vapour deposition, controlling depositing time is 4 ~ 8 hours, cools to room temperature with the furnace after having deposited; Described SiC nanofiber is synusia heaped-up, and diameter is 20-100nm; Length is 5-20 μm.
The preparation method of a kind of ceramic composite of the present invention, in step 3, described carbon-source gas is selected from least one in methane, third rare, propane, Sweet natural gas, and described diluent gas is selected from least one in nitrogen, hydrogen; Described carbon-source gas and diluent gas carbon-source gas in molar ratio: diluent gas=1 ︰ 1 ~ 3 passes in cvd furnace.In actual mechanical process, general control depositing time is 150-240 hour.
The preparation method of a kind of ceramic composite of the present invention, in step 4, the time of graphitization processing is 15 ~ 30 hours.
The preparation method of a kind of ceramic composite of the present invention, in step 5, purity >=99.0% of described silica flour, granularity are purity >=99.5% of 0.01 ~ 0.1mm, aluminium powder, and granularity is 0.08 ~ 0.9mm.
The preparation method of a kind of ceramic composite of the present invention, in step 5, the time of reaction fusion adhesion is 0.2 ~ 1.0 hour.
The application of a kind of ceramic composite of the present invention, comprises for the preparation of ceramic base retarding disc; It is operating as: assemble by after the dimensioned of design after obtaining ceramic matric composite, obtain ceramic base retarding disc.
The application of a kind of ceramic base retarding disc of the present invention, described by ceramic matric composite by design dimensioned be:
Diamond wheel is adopted to be processed into one or more friction facing to ceramic matric composite by product size, every block friction facing thickness and surface of friction precision reach product requirement, friction facing surrounding is processed by the minus tolerance of product size, and on friction facing, process the rivet counterbore be connected with Steel Skeleton.
The application of a kind of ceramic base retarding disc of the present invention, described assembling is: by design paper, ceramic base friction plate and Steel Skeleton are carried out cold riveting.
The application of a kind of ceramic base retarding disc of the present invention, described Steel Skeleton with No. 45 steel for raw material by roughing, thermal treatment, scale removal, corase grind and demagnetize, heat smooth and eliminate stress, prepared by precision work, riveter nail, the copper-plated technique of surface electrical, the thickness of copper coating is 10 ~ 20 μm.
Beneficial effect:
The ceramic base retarding disc prepared with ceramic composite of the present invention, can improve transport facility breaking system braking ability, alleviate breaking system weight, extends the work-ing life of retarding disc and reduces maintenance cost.
The present invention utilizes the character of nickel cleverly, nano nickel is obtained by strict state modulator, by the time of considered critical nickel plating, the concentration of plating solution and temperature and the magnitude of current, the nano nickel being attached to Carbon fibe precast body surface is controlled in a rational scope; Nano nickel that is appropriate and appropriate size uses as the catalyzer preparing SiC nanofiber.
Due to the existence of nano nickel, under its katalysis, achieve carbon fiber surface growth in situ SiC nanofiber, by the preparation condition of strict control SiC nanofiber, by the content of SiC nanofiber and size control in a rational scope; SiC nanofiber that is appropriate and appropriate size can not only improve the interface bond strength of carbon fiber and carbon base body, improves mechanical strength, and is conducive to the crocking resistance improving finished product.
When the present invention prepares C/C-SiCNF porous insert by chemical vapor infiltration, the parameter of chemical vapor infiltration process due to considered critical, make the rate-controlling of deposit carbon in a rational scope, the carbon part deposited is as matrix carbon, when a part is as reaction fusion adhesion, carbon source needed for carbon pasc reaction; In graphitizing process, needed for matrix carbon and carbon pasc reaction, carbon source is an entirety, this makes follow-up prepared SiC and matrix carbon combining tightly, this is not only conducive to the mechanical property improving finished product, also the abrasion-resistant of finished product, anti abrasive performance are increased significantly, the retarding disc prepared by the present invention can be carried in transport facility with high speed high energy.
The present invention is directed to the existing problem that ceramic base retarding disc wears no resistance, work-ing life is short, adopt and add a certain amount of aluminium powder in infiltration process, reduce the hardness of retarding disc, improve wear resistance and braking stability factor.
In a word, the present invention, by reasonable component proportioning and sequence of construction, has prepared good mechanical performance, oxidation resistant, resistance to abrasion-resistant, anti abrasive high-quality ceramic base retarding disc; Prepared finished product is applicable to high speed high energy completely and carries transport facility.
Accompanying drawing explanation
Each component distribution situation figure of accompanying drawing 1 ceramic composite prepared by embodiment 1;
The schematic diagram of retarding disc of accompanying drawing 2 for utilizing ceramic composite prepared by the present invention and making.
In Fig. 1: 1-C/C-SiCNF; 2-carbon fiber; 3-is around the RESEARCH OF PYROCARBON of carbon fibre growth; 4-silicon carbide substrate; 5-elemental silicon; 6-Al
4c
3and aluminium;
In Fig. 2: 7-ceramic base compound matrix material; 8-steel backing; 9-rivet.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment 1:
Design comprises the ceramic matric composite of following composition by percentage to the quality:
Carbon fiber 20%;
Ni0.04％；
Matrix carbon 30%;
SiC nanofiber 0.06%;
SiC matrix 35%;
Al
4C
33.5％；
Si5％；
Al6.4％；
Adopt toray company (Toray) the T700 Carbon fibe net tire produced and without latitude cloth, making density is 0.55g/cm
3carbon fibe precast body.Being put into by precast body after vacuum oven removes photoresist adopts electrochemical plating to prepare nickel catalyzator, and size of current is 12A, and electroplate liquid adopts concentration to be the nickel sulfate solution of 10%, the precast body washed with de-ionized water post-drying after plating 8min.CCVD is adopted to prepare SiC nanofiber at precast body carbon fiber surface, the throughput ratio of trichloromethyl silane, carrier gas hydrogen and dilution argon gas is 1:2:3, depositing temperature is 900 DEG C, deposition pressure is 500Pa, deposits 4 hours, obtains the Carbon fibe precast body that surface uniform is distributed with SiC nanofiber; The length of described SiC nanofiber is 5-10 μm, and diameter is 20-60nm.Precast body being carried out chemical vapor infiltration, to obtain density be 1.3g/cm
3c/C-SiCNF porous materials, carbon-source gas and the ratio of diluent gas are 1 ︰ 3, and depositing time is 350 hours, and temperature is 1000 DEG C.C/C-SiCNF porous materials is carried out the graphitization processing of 2000 DEG C after 30 hours, weight percent 90% silica flour is become infiltration agent with 10% aluminium powder mixing match, silica flour purity is 99.2%, granularity is 0.06mm, and aluminium powder purity is 99.5%, and granularity is 0.5mm.2 times of infiltration agent to C/C-SiC porous insert weight are laid on and carry out infiltration in infiltration device and obtain carbon ceramic friction material, until obtaining density is 2.28g/cm
3ceramic matric composite, during infiltration, control temperature is 1400 DEG C, at top temperature point insulation 1.0h.Carbon ceramic friction material is dimensioned to polylith friction facing by certain tank use for brake system V-type carbon pottery friction pair, adopt the Steel Skeleton of No. 45 steel processing Moving plates and quiet dish, obtained carbon pottery friction facing and Steel Skeleton are carried out cold riveting, obtained complete-disc carbon pottery friction pair.
To certain the tank use for brake system complete-disc V-type carbon pottery friction pair manufactured, carry out actual entrucking examination in Inner Mongolia First Machinery Group Co., Ltd..Use result shows: the complete-disc carbon pottery friction pair heat resisting temperature of exploitation has exceeded 1600 DEG C, there is good antioxidant property and heat resistanceheat resistant decline performance, solve easy melting welding in powder metallurgy friction material brake process, tear, large, that the life-span is short problem of wearing and tearing, work-ing life is more than 4 times of powder metallurgy brake flat.
Embodiment 2:
Design comprises the ceramic matric composite of following composition by percentage to the quality:
Carbon fiber 18%;
Ni0.05％；
Matrix carbon 36%;
SiC nanofiber 0.05%;
SiC matrix 32%;
Al
4C
34.9％；
Si5％；
Al4％；
Adopt the domestic carbon fiber preforms that Hunan KBCarbon Composite Science and Technology Co., Ltd. produces, density is 0.50g/cm
3.Electrochemical plating are adopted to prepare nickel catalyzator after being removed photoresist by precast body, size of current is 15A, electroplate liquid adopts concentration to be the nickel sulfate solution of 15%, the precast body washed with de-ionized water post-drying after plating 10min (after plating, the granularity of gained nickel is 0.01-0.05 μm).CCVD is adopted to prepare SiC nanofiber at precast body carbon fiber surface, the throughput ratio of trichloromethyl silane, carrier gas hydrogen and dilution argon gas is 1:1:2, depositing temperature is 800 DEG C, deposition pressure is 700Pa, deposits 6 hours, obtains the Carbon fibe precast body that surface uniform is distributed with SiC nanofiber; The length of described SiC nanofiber is 5-20 μm, and diameter is 20-50nm.Grown carbon fiber precast body being carried out CVI, to obtain density be 1.24g/cm
3c/C-SiCNF porous materials, carbon-source gas and the ratio of diluent gas are 1 ︰ 1, and depositing time is 300 hours, and temperature is 1100 DEG C.Weight percent 70% silica flour, after 15 hours, is become infiltration agent with 30% aluminium powder mixing match by the graphitization processing of C/C-SiC porous materials being carried out 2400 DEG C, and silica flour purity is 99.2%, granularity is 0.06mm, and aluminium powder purity is 99.5%, and granularity is 0.5mm.The infiltration agent of 4 times of C/C-SiCNF porous insert weight is laid in infiltration device and carries out infiltration until obtaining density is 2.36g/cm
3carbon ceramic friction material, during infiltration, control temperature is 1200 DEG C, at top temperature point insulation 0.5h.Carbon ceramic friction material is dimensioned to polylith friction facing by certain racing car use for brake system retarding disc, adopt No. 45 steel machined steel skeletons, obtained carbon pottery friction facing and Steel Skeleton are carried out cold riveting, obtained carbon ceramic friction material retarding disc, and successful entrucking application.
Embodiment 3
Design comprises the ceramic matric composite of following composition by percentage to the quality:
Carbon fiber 15%;
Ni0.08％；
Matrix carbon 40%;
SiC nanofiber 0.07%;
SiC matrix 28%;
Al
4C
34.85％；
Si7％；
Al5％；
Adopt the Carbon fibe precast body that Hunan KBCarbon Composite Science and Technology Co., Ltd. produces, making density is 0.32g/cm
3carbon fibe precast body.Being put into by precast body after vacuum oven removes photoresist adopts electrochemical plating to prepare nickel catalyzator, size of current is 15A, electroplate liquid adopts concentration to be the nickel sulfate solution of 15%, precast body washed with de-ionized water post-drying after plating 20min (after plating, the granularity of gained nickel is 0.04-0.2 μm).CCVD is adopted to prepare SiC nanofiber at precast body carbon fiber surface, the throughput ratio of trichloromethyl silane, carrier gas hydrogen and dilution argon gas is 1:3:2, depositing temperature is 1100 DEG C, deposition pressure is 600Pa, deposits 4 hours, obtains the Carbon fibe precast body that surface uniform is distributed with SiC nanofiber; The length of described SiC nanofiber is 5-15 μm, and diameter is 40-100nm.Grown carbon fiber precast body being carried out chemical vapor infiltration, to obtain density be 1.6g/cm
3c/C-SiCNF porous materials, carbon-source gas and the ratio of diluent gas are 1 ︰ 1, and depositing time is 240 hours, and temperature is 1000 DEG C.Weight percent 80% silica flour, after 25 hours, is become infiltration agent with 20% aluminium powder mixing match by the graphitization processing of C/C-SiC porous materials being carried out 2200 DEG C, and silica flour purity is 99.6%, granularity is 0.1mm, and aluminium powder purity is 99.5%, and granularity is 0.05mm.3 times of infiltration agent to C/C-SiC porous insert weight are laid on and carry out infiltration in infiltration device and obtain carbon ceramic friction material, until obtaining density is 2.08g/cm
3ceramic matric composite, during infiltration, control temperature is 1500 DEG C, at top temperature point insulation 0.2h.
Claims (10)
1. a ceramic composite, comprises following composition by percentage to the quality:
Carbon fiber 12-20%;
Ni0.01-0.1％；
Matrix carbon 20-45%;
SiC nanofiber 0.01-0.1%;
SiC matrix 25-40%;
Al
4C
33-5％；
Si2-7％；
Al2-10％。
2. a kind of ceramic composite according to claim 1, is characterized in that:
Described nickel is evenly distributed on the surface of Carbon fibe; Described SiC nanofiber is evenly distributed between carbon fiber and matrix carbon; Described matrix carbon is coated on carbon fiber; Described SiC matrix, Al
4c
3, Si, Al are even to be uniformly distributed point on matrix carbon surface.
3. prepare a method for ceramic composite as claimed in claim 1 or 2, it is characterized in that, comprise the steps:
Step one is removed photoresist, nickel plating
Under protective atmosphere, be 0.10 ~ 0.65g/cm by density
3carbon fibe precast body to carry out removing photoresist nickel plating at least 5min after process, obtain the Carbon fibe precast body that surface uniform is distributed with nano nickel;
SiC nanofiber is prepared in step 2 chemical vapour deposition
Gaseous phase deposition stove is put into after the surface uniform of step one gained being distributed with the Carbon fibe precast body cleaning, drying of nano nickel, continue to pass into deposition gas, carrier gas and diluent gas, and to control stove internal gas pressure be 500 ~ 700Pa, carry out chemical vapour deposition at least 4 hours at 800 ~ 1100 DEG C, obtain the Carbon fibe precast body that surface uniform is distributed with SiC nanofiber; Described deposition gas is trichloromethyl silane;
Step 3 chemical vapor infiltration prepares C/C-SiCNF porous insert
The Carbon fibe precast body that surface uniform step 2 prepared is distributed with SiC nanofiber puts into cvd furnace, pass into carbon-source gas and diluent gas, and to control stove internal gas pressure be 950-1050pa, carry out chemical vapor infiltration process at 900 ~ 1100 DEG C, until obtaining density is 1.0 ~ 1.6g/cm
3c/C-SiCNF porous insert;
Step 4 graphitization processing
Under protective atmosphere, be 1.0 ~ 1.6g/cm at 2000 ~ 2400 DEG C to step 3 gained density
3c/C-SiCNF porous insert carry out high-temperature heat treatment more than 15 hours, obtain graphited C/C-SiC porous insert;
Step 5 reaction fusion adhesion
Graphited C/C-SiCNF porous insert is embedded in the infiltration agent be made up of Si powder and Al powder, carries out reaction fusion adhesion at 1000 ~ 1500 DEG C, until obtaining density is 2.0 ~ 2.4g/cm
3ceramic matric composite; In described infiltration agent, the mass percentage of Si powder is the mass percentage of 70 ~ 90%, Al powder is 10 ~ 30%, and the mass ratio of infiltration agent used and C/C-SiCNF porous insert is 2 ~ 4:1.
4. the preparation method of a kind of ceramic composite according to claim 3, is characterized in that, in step one; Described nickel plating is plating nickel plating, nickel plating plating solution used to be mass percentage concentration be 10% ~ 15% nickel sulfate solution, during nickel plating, control electric current is 10 ~ 15A, the temperature of plating solution is 30 ~ 40 DEG C, the time is 5min-30min; After nickel plating, obtain the Carbon fibe precast body that surface uniform is distributed with nano nickel; The particle diameter of described nano nickel is 0.01-0.5 μm.
5. the preparation method of a kind of ceramic composite according to claim 3, is characterized in that: in step 2, and described carrier gas is hydrogen; Described diluent gas is selected from least one in nitrogen, hydrogen; The mol ratio of the deposition gas passed into, carrier gas, diluent gas is 1:1 ~ 3:2 ~ 4.
6. the preparation method of a kind of ceramic composite according to claim 3, is characterized in that: in step 2, and when SiC nanofiber is prepared in chemical vapour deposition, controlling depositing time is 4 ~ 8 hours, cools to room temperature with the furnace after having deposited; The diameter of described SiC nanofiber is 20-100nm; Length is 5-20 μm.
7. the preparation method of a kind of ceramic composite according to claim 3, it is characterized in that: in step 3, described carbon-source gas is selected from least one in methane, third rare, propane, Sweet natural gas, and described diluent gas is selected from least one in nitrogen, hydrogen; Described carbon-source gas and diluent gas carbon-source gas in molar ratio: diluent gas=1 ︰ 1 ~ 3 passes in cvd furnace.
8. the preparation method of a kind of ceramic composite according to claim 3, is characterized in that: in step 5, and purity >=99.0% of described silica flour, granularity are purity >=99.5% of 0.01 ~ 0.1mm, aluminium powder, and granularity is 0.08 ~ 0.9mm.
9. the preparation method of a kind of ceramic composite according to claim 3, is characterized in that: in step 5, and the time of reaction fusion adhesion is 0.2 ~ 1.0 hour.
10. an application for ceramic composite as claimed in claim 1 or 2, is characterized in that: described application comprises for the preparation of ceramic base retarding disc.
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| CN105537578A (en) * | 2015-12-21 | 2016-05-04 | 无锡科莱欣机电制造有限公司 | Metal composite for vacuum dryer |
| CN105755307A (en) * | 2016-03-21 | 2016-07-13 | 中南大学 | Reinforced composite adopting honeycomb structure and preparation method |
| CN105755307B (en) * | 2016-03-21 | 2017-12-26 | 中南大学 | A kind of alveolate texture enhancing composite and preparation method |
| CN108178633A (en) * | 2018-01-24 | 2018-06-19 | 湖南屹林材料技术有限公司 | A kind of middle low speed magnetic suspension train skid body material and preparation method thereof |
| CN110983208A (en) * | 2019-10-24 | 2020-04-10 | 中南大学 | C/C-SiC-Cu composite material and preparation method and application thereof |
| CN110983208B (en) * | 2019-10-24 | 2021-08-31 | 中南大学 | C/C-SiC-Cu composite material and preparation method and application thereof |
| CN112299854A (en) * | 2020-11-04 | 2021-02-02 | 哈尔滨工业大学（威海） | Low-cost high-temperature-resistant carbon-ceramic composite material and preparation method thereof |
| CN114230357A (en) * | 2021-12-22 | 2022-03-25 | 中国电子科技集团公司第三十八研究所 | Preparation method of composite material slot waveguide antenna |
| CN114230357B (en) * | 2021-12-22 | 2023-01-31 | 中国电子科技集团公司第三十八研究所 | Preparation method of composite material slot waveguide antenna |
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