CN104876621B - One kind has porous composite ceramicses of biomimetic features C/SiC and preparation method thereof - Google Patents
One kind has porous composite ceramicses of biomimetic features C/SiC and preparation method thereof Download PDFInfo
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Abstract
The present invention provides a kind of with porous composite ceramicses of biomimetic features C/SiC and preparation method thereof.The porous composite ceramicses of C/SiC are used as skeleton using carbon fiber, carbon fiber network skeleton is built in carbon fiber surface deposition carbosphere using microwave-hydrothermal method, carbon fiber surface carbosphere is set to react generation SiC with gas phase SiO using carbothermic reduction reaction, and hereditary carbosphere microstructure, it is micro- prominent in carbon fiber surface formation SiC；Reacted simultaneously using gas phase SiO and CO and form SiC nanometers of fine hair (SiC nanowire) on the micro- prominent surfaces of SiC, so as to construct with the porous composite ceramicses of biomimetic features C/SiC.The structure of the biomimetic features, can greatly improve the specific surface area of SiC porous ceramics, it is had potential application in catalyst carrier material and high temperature air filtration field.
Description
Technical field
The invention belongs to porous ceramic film material preparing technical field, it is related to a kind of porous compound with biomimetic features C/SiC
Ceramics and preparation method thereof.
Background technology
Chemical stability that carborundum (SiC) has not only had, high mechanical strength and hardness, and led with good
Electrical conductivity energy.Electrical and thermal conductivity good especially SiC is conducive to catalyst heat transfer during the course of the reaction and catalysis
Electron transmission between agent active component and carrier, becomes the ideal material of catalyst carrier.But, in chemical industry catalysis technique
But the figure of SiC porous ceramics application is seldom seen in field.To find out its cause, being because the SiC that commercial methods are produced
Its specific surface area of porous ceramics is difficult to the requirement for meeting catalyst carrier material.Therefore, how to prepare and can serve as catalyst carrier
High-specific surface area SiC, caused the attention of researcher, relevant research is also increasing, develop template, colloidal sol coagulate
The methods such as glue method, Polycarbosilane cracking process, are prepared for SiC porous particles, SiC nanotubes, the structure such as SiC microballoons.Chinese invention
Patent 02130064.X reports a kind of high-specific surface area carborundum and preparation method thereof, the high-specific surface area prepared by this method
A diameter of 10-20nm of carborundum, specific surface area is 60-160m2/ g, pore size distribution range is 3-100nm.However, above-mentioned side
Method prepare high-specific surface area SiC to reach practical application also need shaping, make the catalyst carrier being made have suitable shape,
Size and mechanical strength, to meet the operation requirement of industrial reactor.During shaping of catalyst, porous SiC ceramics
Sintering process can cause being greatly reduced for specific surface area.Therefore, a kind of carborundum porous ceramics and preparation method thereof are developed, make it
It is to solve the material to apply in catalytic field also with stronger formability and mechanical strength while with specific area
Key.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of with the porous composite ceramicses of biomimetic features C/SiC and its system
Preparation Method, the porous composite ceramicses of C/SiC obtained by this method are while with specific area, also with stronger plastic
Property and mechanical strength.
A kind of preparation method with the porous composite ceramicses of biomimetic features C/SiC, it is porous compound with biomimetic features C/SiC
Ceramics deposit carbosphere using microwave-hydrothermal method using carbon fiber as skeleton in carbon fiber surface, to build carbon fiber network skeleton,
Then, it is micro- prominent in carbon fiber surface formation SiC using carbothermic reduction reaction, then, SiC nanometers of suedes are formed on the micro- prominent surfaces of SiC
Hair, so as to construct with the porous composite ceramicses of biomimetic features C/SiC.
The forming method of the carbosphere of the carbon fiber surface is：Using carbon fiber as skeleton, using glucose as carbon source, by bone
Frame and carbon source are positioned in micro-wave diminishing pot, are reacted micro-wave diminishing pot is put into microwave attenuation materials instrument, reaction temperature
Spend for 170~210 DEG C, the reaction time is 1~3h.
The concentration of the glucose solution is 10~100g/L.
Micro- dash forward of the SiC is carbon fiber surface carbosphere is reacted generation SiC with gas phase SiO using carbothermic reduction reaction,
And hereditary carbosphere microstructure, it is micro- prominent in carbon fiber surface formation SiC.
The SiC nanometers of fine hair is to be formed using gas phase SiO and CO reactions on the micro- prominent surfaces of SiC.
A kind of preparation method with the porous composite ceramicses of biomimetic features C/SiC, comprises the following steps：Step 1：It is fine with carbon
Tie up as skeleton, using glucose as carbon source, using microwave hydrothermal technology, glucose solution and carbon fiber skeleton are put into micro-wave digestion
In tank, then micro-wave diminishing pot is put into microwave attenuation materials instrument again and reacted, obtain the carbon fiber bone of carbosphere bonding
Frame；Step 2：The carbon fiber skeleton that step 1 is obtained is put into vacuum sintering furnace, with Si and SiO2Mixed-powder as silicon source,
Controlling reaction temperature is 1300~1600 DEG C, and reaction pressure is 1~100KPa, and the reaction time is 1~4h, you can.
In the step 2, carbon fiber skeleton is placed in Si and SiO2Above mixed-powder.
The inwall of the carbon fiber skeleton and sintering furnace is in close contact, and reacting gas is conducive into carbon fiber skeleton
Spread in portion.
One kind has the porous composite ceramicses of biomimetic features C/SiC, is prepared according to method described above.
One kind has anti-using microwave hydrothermal between the porous composite ceramicses of biomimetic features C/SiC, including carbon fiber, carbon fiber
The carbosphere connection that should be formed, carbon fiber and carbosphere are built into carbon fiber network skeleton, and the carbosphere utilizes carbon thermal reduction
Reaction is micro- prominent in carbon fiber surface formation SiC, and SiC nanometers of fine hair are formed with micro- dash forward of the SiC.
Compared with prior art, the present invention at least has advantages below：This method is with nature micro-/ nano multilevel hierarchy
For thinking, a kind of porous composite ceramicses of new C/SiC are built from the angle of biomimetic material design, bone is used as using carbon fiber
Frame, with micro- prominent in SiC microballoons simulation organism, nanometer fine hair in organism is simulated with SiC nanowire, structure one, which has, to be imitated
The porous composite ceramicses of C/SiC of raw structure.The porous composite ceramicses of C/SiC involved by this method have high-specific surface area, are easy to
Shaping, the characteristic of high intensity.The porous composite ceramicses of C/SiC are using carbon fiber as skeleton, using microwave-hydrothermal method in carbon fiber surface
Face deposition carbosphere builds carbon fiber network skeleton, makes carbon fiber surface carbosphere and gas phase SiO anti-using carbothermic reduction reaction
SiC, and hereditary carbosphere microstructure should be generated, it is micro- prominent (SiC microballoons) in carbon fiber surface formation SiC；Utilize gas phase simultaneously
SiO and CO reacts forms SiC nanometers of fine hair (SiC nanowire) on the micro- prominent surfaces of SiC, so as to construct with biomimetic features C/
The porous composite ceramicses of SiC.The carbosphere to be formed is reacted between carbon fiber using microwave hydrothermal to connect, one high porosity of formation,
The three-dimensional net structure of high intensity, is the basis of the porous composite ceramicses of C/SiC with reference to the characteristics of carbon fiber high-strength light；Use SiC
Microballoon and SiC nanowire are dashed forward and nanometer fine hair to simulate the micro- of organism, realize bionical the setting of the porous composite ceramicses of C/SiC
Meter.The structure of the biomimetic features, can greatly improve the specific surface area of SiC porous ceramics, make it in catalyst carrier material and height
Wet body filtration art has potential application.
Brief description of the drawings
Fig. 1 is the porous composite ceramic structures schematic diagrames of C/SiC of the present invention；(a) it is the three of the porous composite ceramicses of C/SiC
Tie up construction unit；(b) it is individual carbon fibers surface microstructure schematic diagram in (a)；(c) (d) (e) be respectively carbon fiber in (b),
The schematic diagram of SiC microballoons and SiC nanowire.
Fig. 2 is the SEM shape appearance figures of the porous composite ceramics preparation process different phases of C/SiC：(a) Microwave Water reaction is fine in carbon
Single SiC is micro- prominent in the carbosphere of dimension table face synthesis, the SiC layer and SiC microballoons (micro- prominent) of (b) carbon fiber surface, (c) figure (b)
Enlarged drawing, (d) reaction time be 1h when the micro- prominent surfaces of SiC SiC nanowire (fine hair), (e) reaction time be 3h when SiC it is micro-
The SiC nanowire (fine hair) on prominent surface.
Embodiment
The inventive method is, using nature micro-/ nano multilevel hierarchy as thinking, to be built from the angle of biomimetic material design
A kind of porous composite ceramicses of new C/SiC, using carbon fiber as skeleton, simulated with SiC microballoons it is micro- prominent in organism, with
Nanometer fine hair in SiC nanowire simulation organism, builds a porous composite ceramics of C/SiC with biomimetic features.This method
The porous composite ceramicses of involved C/SiC have high-specific surface area, are easy to shaping, the characteristic of high intensity.The porous composite ceramics of C/SiC
Porcelain builds carbon fiber network skeleton, profit using microwave-hydrothermal method using carbon fiber as skeleton in carbon fiber surface deposition carbosphere
Carbon fiber surface carbosphere is set to react generation SiC, and hereditary carbosphere microstructure with gas phase SiO with carbothermic reduction reaction,
Carbon fiber surface formation SiC micro- prominent (SiC microballoons)；SiC is formed on the micro- prominent surfaces of SiC using gas phase SiO and CO reactions simultaneously to receive
Rice fine hair (SiC nanowire), so as to construct with the porous composite ceramicses of biomimetic features C/SiC.Microwave is utilized between carbon fiber
The carbosphere connection of hydro-thermal reaction formation, forms high porosity, a three-dimensional net structure for high intensity, with reference to carbon fiber lightweight
High-strength the characteristics of, be the basis of the porous composite ceramicses of C/SiC；Simulated with SiC microballoons and SiC nanowire the micro- prominent of organism and
Nanometer fine hair, realizes the Bionic Design of the porous composite ceramicses of C/SiC.
There is porous composite ceramicses of biomimetic features C/SiC and preparation method thereof, including following step the invention provides one kind
Suddenly：
Step 1：Carbon fiber skeleton is chosen, carbon fiber skeleton can be that chopped carbon fiber prefabricated component, carbon fiber solid are knitted
Thing, density can be in 0.2~0.6g/cm3；
Step 2：Carbosphere is prepared in the carbon fiber skeleton that step 1 is chosen.Using microwave hydrothermal technology, by biomass carbon
Source solution is put into micro-wave diminishing pot with carbon fiber skeleton, and then micro-wave diminishing pot is put into microwave attenuation materials instrument again and carried out
Reaction, obtains the carbon fiber skeleton of carbosphere bonding.Microwave hydrothermal reaction parameter be：The control of biomass carbon source solution concentration exists
10~100g/L, reaction temperature is 170~210 DEG C, and the reaction time is 1~3h, and carbosphere size Control is in 200~500nm；
Step 3：Porous carbon template after step 2 is handled, is put into vacuum sintering furnace.With Si and SiO2Mixed-powder is made
For silicon source, Si:SiO2Mol ratio is controlled 2:1~2:Between 3, reaction temperature is controlled between 1300~1600 DEG C, reaction point
Voltage-controlled system is between 1~100KPa, and the reaction time is controlled in 1~4h.During reaction, porous carbon template is placed in Si and SiO2Mixed powder
Last top, and porous carbon template and the close contact of reaction vessel inwall, make reacting gas be conducive to spreading into porous carbon template.
Embodiment 1：
Step 1：Selection density is 0.2g/cm3Chopped carbon fiber prefabricated component be used as skeleton；Using glucose as carbon source,
Compound concentration is 50g/L glucose solution；
Step 2：Using microwave hydrothermal technology, glucose solution and carbon fiber skeleton are put into micro-wave diminishing pot, then
Micro-wave diminishing pot is put into microwave attenuation materials instrument again and reacted, the carbon fiber skeleton of carbosphere bonding is obtained.Reaction temperature
Degree control is at 170 DEG C, and the reaction time is controlled in 1h, and final carbosphere size is 200nm.
Step 3：Porous carbon template after step 2 is handled, is put into vacuum sintering furnace.With Si and SiO2Mixed-powder is made
For silicon source, Si:SiO2Mol ratio is controlled 2:1, reaction temperature is controlled at 1300 DEG C, and reaction partial pressure control is in 1KPa, reaction
Between control in 1h.During reaction, porous carbon template is placed in Si and SiO2Above mixed-powder, and in porous carbon template and reaction vessel
Wall is in close contact, and makes reacting gas be conducive to spreading into porous carbon template.
The porous composite ceramics performances of C/SiC obtained by the present embodiment see attached list 1.
Embodiment 2：
Step 1：Selection density is 0.6g/cm3Chopped carbon fiber prefabricated component be used as skeleton；Using sucrose as carbon source, match somebody with somebody
Concentration processed is 70g/L sucrose solution；
Step 2：Using microwave hydrothermal technology, sucrose solution and carbon fiber skeleton are put into micro-wave diminishing pot, Ran Houzai
Micro-wave diminishing pot is put into microwave attenuation materials instrument and reacted, the carbon fiber skeleton of carbosphere bonding is obtained.Reaction temperature
Control is at 210 DEG C, and the reaction time is controlled in 1.5h, and final carbosphere size is 500nm.
Step 3：Porous carbon template after step 4 is handled, is put into vacuum sintering furnace.With Si and SiO2Mixed-powder is made
For silicon source, Si:SiO2Mol ratio is controlled 2:3, reaction temperature is controlled at 1600 DEG C, and the control of reaction partial pressure is in 100KPa, reaction
Time control is in 4h.During reaction, porous carbon template is placed in Si and SiO2Above mixed-powder, and porous carbon template and reaction vessel
Inwall is in close contact, and makes reacting gas be conducive to spreading into porous carbon template.
The porous composite ceramics performances of C/SiC obtained by the present embodiment see attached list 1.
Embodiment 3：
Step 1：Selection density is 0.4g/cm3Chopped carbon fiber prefabricated component be used as skeleton；Using starch as carbon source, match somebody with somebody
Concentration processed is 30g/L starch solution；
Step 2：Using microwave hydrothermal technology, starch solution and carbon fiber skeleton are put into micro-wave diminishing pot, Ran Houzai
Micro-wave diminishing pot is put into microwave attenuation materials instrument and reacted, the carbon fiber skeleton of carbosphere bonding is obtained.Reaction temperature
Control is at 200 DEG C, and the reaction time is controlled in 2h, and final carbosphere size is 300nm.
Step 3：Porous carbon template after step 4 is handled, is put into vacuum sintering furnace.With Si and SiO2Mixed-powder is made
For silicon source, Si:SiO2Mol ratio is controlled 1:1, reaction temperature is controlled at 1500 DEG C, and reaction partial pressure control is in 10KPa, reaction
Between control in 2h.During reaction, porous carbon template is placed in Si and SiO2Above mixed-powder, and in porous carbon template and reaction vessel
Wall is in close contact, and makes reacting gas be conducive to spreading into porous carbon template.
The porous composite ceramics performances of C/SiC obtained by the present embodiment see attached list 1.
Embodiment 4：
Step 1：Selection density is 0.5g/cm3Chopped carbon fiber prefabricated component be used as skeleton；Using glucose as carbon source,
Compound concentration is 100g/L glucose solution；
Step 2：Using microwave hydrothermal technology, glucose solution and carbon fiber skeleton are put into micro-wave diminishing pot, then
Micro-wave diminishing pot is put into microwave attenuation materials instrument again and reacted, the carbon fiber skeleton of carbosphere bonding is obtained.Reaction temperature
Degree control is at 190 DEG C, and the reaction time is controlled in 2.5h, and final carbosphere size is 400nm.
Step 3：Porous carbon template after step 4 is handled, is put into vacuum sintering furnace.With Si and SiO2Mixed-powder is made
For silicon source, Si:SiO2Mol ratio is controlled 2:1, reaction temperature is controlled at 1400 DEG C, and reaction partial pressure control is in 50KPa.During reaction
Between be 3h, porous carbon template is placed in Si and SiO2Above mixed-powder, and porous carbon template is in close contact with reaction vessel inwall,
Reacting gas is set to be conducive to spreading into porous carbon template.
The porous composite ceramics performances of C/SiC obtained by the present embodiment see attached list 1.
Embodiment 5：
Step 1：Selection density is 0.3g/cm3Chopped carbon fiber prefabricated component be used as skeleton；Using sucrose as carbon source, match somebody with somebody
Concentration processed is 10g/L sucrose solution；
Step 2：Using microwave hydrothermal technology, sucrose solution and carbon fiber skeleton are put into micro-wave diminishing pot, Ran Houzai
Micro-wave diminishing pot is put into microwave attenuation materials instrument and reacted, the carbon fiber skeleton of carbosphere bonding is obtained.Reaction temperature
Control is at 180 DEG C, and the reaction time is controlled in 3h, and final carbosphere size is 300nm.
Step 5：Porous carbon template after step 2 is handled, is put into vacuum sintering furnace.With Si and SiO2Mixed-powder is made
For silicon source, Si:SiO2Mol ratio is controlled 1:1, reaction temperature is controlled at 1300 DEG C, and reaction partial pressure control is in 30KPa, reaction
Between be 2h.During reaction, porous carbon template is placed in Si and SiO2Above mixed-powder, and porous carbon template and reaction vessel inwall are tight
Contiguity is touched, and makes reacting gas be conducive to spreading into porous carbon template.
The porous composite ceramics performances of C/SiC obtained by the present embodiment see attached list 1.
The specific surface area and compression strength index of the porous composite ceramics samples of subordinate list 1.C/SiC
Shown in reference picture 2, it is ESEM (SEM) photo of the porous composite ceramicses of C/SiC made from the present embodiment 4.
It can be seen that by Fig. 2 (a)：After microwave hydrothermal is handled, carbon fiber surface deposits one layer of carbon and a large amount of carbospheres of surface distributed；
Fig. 2 (b) is that carbothermic reduction reaction process carbon fiber surface carbon-coating and carbosphere react the SiC layer generated with gas phase SiO and SiC is micro-
Ball (micro- prominent), it can be seen that SiC layer has rough surface, is made up of a large amount of nano SiC granules, and this is porous composite ceramics
High-specific surface area provides powerful guarantee；And the formation heredity microscopic appearance of carbosphere of SiC microballoons；By corresponding enlarged drawing 2
(c) it can be seen that：Single SiC microsphere surfaces are coarse, are made up of nano SiC granule.Fig. 2 (d) be the reaction time when being 1h SiC it is micro-
The SiC nanowire (fine hair) on prominent surface, nano wire radially distributes in SiC microsphere surfaces.It is 3h in the reaction time that Fig. 2 (e), which is,
When the micro- prominent surfaces of SiC SiC nanowire (fine hair), as the reaction time extends, the increase of SiC nanowire draw ratio and is distributed in
In porous composite ceramics hole, the specific surface area of porous composite ceramics is further increased.
Method of the preparation with the porous composite ceramicses of biomimetic features C/SiC that the present invention is provided at least has advantages below：
The present invention chooses chopped carbon fiber prefabricated component as skeleton, and carbon is built in carbon fiber surface deposition carbosphere using microwave-hydrothermal method
Fiber reinforcement structure, forms high porosity, a three-dimensional net structure for high intensity, with reference to the characteristics of carbon fiber high-strength light,
It is the basis of the porous composite ceramicses of C/SiC；Make carbon fiber surface carbosphere react with gas phase SiO using carbothermic reduction reaction to generate
SiC, the SiC layer and SiC microsphere surfaces of carbon fiber surface is coarse, is made up of a large amount of nano SiC granules；And heredity carbosphere is microcosmic
Structure, micro- prominent in carbon fiber surface formation SiC, this provides powerful guarantee for the high-specific surface area of porous composite ceramics；Utilize
Gas phase SiO and CO reacts forms SiC nanometers of fine hair (SiC nanowire) on the micro- prominent surfaces of SiC, constructs with biomimetic features C/
The porous composite ceramicses of SiC.SiC nanowire is distributed in porous composite ceramics hole, further increases porous composite ceramics
Specific surface area.The structure of the biomimetic features, can greatly improve the specific surface area of SiC porous ceramics, make it in catalyst carrier material
Material and high temperature air filtration field have potential application.
The features of the present invention include it is following some：
1：The porous composite ceramicses of C/SiC are by carbon fiber as skeleton, and carbon fiber skeleton can be pre- from chopped carbon fiber
Product, carbon fiber stereo fabric.
2：By microwave hydrothermal technology, carbosphere is prepared on the surface of carbon fiber, carbon fiber is connected as an entirety, is increased
The intensity of strong carbon fiber skeleton.The carbosphere prepared simultaneously can protect carbon fine as carbon source in follow-up carbothermic reduction reaction
Dimension.
3：In carbon fiber skeleton, it is to prepare the micro- prominent bases of SiC to introduce carbosphere.The micro- prominent formation of SiC is heredity
The microstructure of carbosphere, is the basis of the porous composite ceramics high-specific surface areas of C/SiC.
4：On the micro- prominent surfaces of SiC, a large amount of SiC nanometers of fine hair (SiC nanowire) are distributed with.A large amount of SiC nanometers of fine hair are deposited
The specific surface area of porous composite ceramics can be being greatly improved, it is had in catalyst carrier material and high temperature air filtration field
There is potential application.
Claims (8)
1. a kind of preparation method with the porous composite ceramicses of biomimetic features C/SiC, it is characterised in that：The C/SiC is porous compound
Ceramics are using carbon fiber as skeleton, with micro- prominent in SiC microballoons simulation organism, with nanometer in SiC nanowire simulation organism
Fine hair, builds a porous composite ceramics of C/SiC with biomimetic features；Specific method is：It is porous with biomimetic features C/SiC
Composite ceramics deposits carbosphere, to build carbon fiber network using microwave-hydrothermal method using carbon fiber as skeleton in carbon fiber surface
Skeleton, it is then, micro- prominent in carbon fiber surface formation SiC using carbothermic reduction reaction, then, form SiC on the micro- prominent surfaces of SiC and receive
Rice fine hair, so as to construct with the porous composite ceramicses of biomimetic features C/SiC；Micro- dash forward of the SiC is to utilize carbothermic reduction reaction
Carbon fiber surface carbosphere is reacted generation SiC, and hereditary carbosphere microstructure with gas phase SiO, formed in carbon fiber surface
SiC is micro- prominent；The SiC nanometers of fine hair is to be formed using gas phase SiO and CO reactions on the micro- prominent surfaces of SiC.
2. a kind of preparation method with the porous composite ceramicses of biomimetic features C/SiC according to claim 1, its feature exists
In：The forming method of the carbosphere of the carbon fiber surface is：Using carbon fiber as skeleton, using glucose as carbon source, by skeleton and
Carbon source is positioned in micro-wave diminishing pot, then micro-wave diminishing pot is put into microwave attenuation materials instrument reacted, and reaction temperature is
170~210 DEG C, the reaction time is 1~3h.
3. a kind of preparation method with the porous composite ceramicses of biomimetic features C/SiC according to claim 2, its feature exists
In：The concentration of the glucose solution is 10~100g/L.
4. a kind of preparation method with the porous composite ceramicses of biomimetic features C/SiC, it is characterised in that：Comprise the following steps：
Step 1：Using carbon fiber as skeleton, using glucose as carbon source, using microwave hydrothermal technology, by glucose solution and carbon fiber
Skeleton is put into micro-wave diminishing pot, and then micro-wave diminishing pot is put into microwave attenuation materials instrument again and reacted, carbon is obtained micro-
The carbon fiber skeleton that ball is bonded；
Step 2：The carbon fiber skeleton that step 1 is obtained is put into vacuum sintering furnace, with Si and SiO2Mixed-powder as silicon source,
Controlling reaction temperature is 1300~1600 DEG C, and reaction pressure is 1~100KPa, and the reaction time is 1~4h, you can.
5. a kind of preparation method with the porous composite ceramicses of biomimetic features C/SiC according to claim 4, its feature exists
In：In the step 2, carbon fiber skeleton is placed in Si and SiO2Above mixed-powder.
6. a kind of preparation method with the porous composite ceramicses of biomimetic features C/SiC according to claim 4, its feature exists
In：The inwall of the carbon fiber skeleton and sintering furnace is in close contact, and makes reacting gas be conducive to spreading to carbon fiber skeletal internal.
7. a kind of one kind based on prepared by any one method in claim 1 to 6 has biomimetic features C/SiC porous compound
Ceramics.
8. one kind has the porous composite ceramicses of biomimetic features C/SiC, it is characterised in that：The composite ceramics includes carbon fiber, and carbon is fine
The carbosphere to be formed connection is reacted between dimension using microwave hydrothermal, carbon fiber and carbosphere are built into carbon fiber network skeleton, institute
State carbosphere micro- prominent in carbon fiber surface formation SiC using carbothermic reduction reaction, SiC nanometers of fine hair are formed with micro- dash forward of the SiC.
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| CN107089840B (en) * | 2017-06-05 | 2020-11-03 | 安徽省亚欧陶瓷有限责任公司 | High-strength ceramic tile with bionic bamboo wall structure and preparation method thereof |
| CN109540969B (en) * | 2018-11-13 | 2021-01-05 | 中国科学院微电子研究所 | Method for measuring types and position distribution of SiC-SiO2 interface carbon impurities in SiC oxidation |
| CN111668463B (en) * | 2020-05-07 | 2022-11-08 | 东莞市鸿德电池有限公司 | Lithium ion battery cathode material and preparation method thereof |
| CN112341230B (en) * | 2020-11-10 | 2022-02-15 | 大连理工大学 | Hierarchical toughening ultra-high temperature ceramic matrix composite inspired by leaves and preparation method thereof |
| CN114085085A (en) * | 2021-12-13 | 2022-02-25 | 广东盛唐新材料技术有限公司 | Bio-based silicon carbide ceramic cotton cloth and preparation method thereof |
| CN114436674B (en) * | 2022-02-11 | 2023-04-11 | 洛阳理工学院 | Preparation method of network-like silicon carbide fiber |
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