CN100395211C - Method for preparing porous silicon carbide ceramic with high porosity - Google Patents
Method for preparing porous silicon carbide ceramic with high porosity Download PDFInfo
- Publication number
- CN100395211C CN100395211C CNB2005100769931A CN200510076993A CN100395211C CN 100395211 C CN100395211 C CN 100395211C CN B2005100769931 A CNB2005100769931 A CN B2005100769931A CN 200510076993 A CN200510076993 A CN 200510076993A CN 100395211 C CN100395211 C CN 100395211C
- Authority
- CN
- China
- Prior art keywords
- resol
- silicon carbide
- porous silicon
- powder
- ceramic green
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The present invention relates to a preparation method of porous silicon carbide ceramics with high porosity, which belongs to the field of the preparation process of ceramic materials. In the method, silicon powder, phenolic resin and alcohol with certain mass ratio are prepared into coat-mix powder by the coat-mix process, then the coat-mix powder is treated by low-temperature low-pressure forming to be prepared into ceramic compacts, the ceramic compacts are carbonized at a high temperature, and finally, the carbonized samples are sintered at a high temperature to obtain porous silicon carbide ceramics with the porosity of higher than 80%. The method has the advantages of simple process, high production efficiency, energy conservation and good environment compatibility, and is a method which can prepare porous silicon carbide ceramics with high porosity.
Description
Technical field
The invention belongs to ceramic materials preparation technology field, particularly a kind of preparation method of high porosity silicon carbide ceramics.
Technical background
Because it is good to have perviousness, specific surface area is big, density is low, the intensity height, thermal conductivity is little, high temperature resistant, wear-resistant, chemical stability is good, premium propertiess such as good radioprotective and electromagnetic consumable, the porous silicon carbide material has been widely used in aerospace, the energy, machinery, metallurgical, chemical industry, environmental protection, military project, a plurality of ambits such as electronics and biology, relating to fluid separation filters, diffusion, heat insulation, sound-absorbing, sensing, the purposes of all many-sides such as electrochemical process and catalytic reaction engineering, can make strainer, separation and support of the catalyst etc., therefore the research of porous silicon carbide material has caused the great attention of global material educational circles, new preparation method arises at the historic moment, and the preparation system also constantly improves.
The preparation of porous silicon carbide also has bibliographical information, and (application number: 03116370.X) reported a kind of is pore-forming material with the yeast powder to Chinese patent, and SiC is an aggregate, Al
2O
3, Suzhou soil and wilkinite be the preparation method of the carborundum porous ceramics of sintering aid.This method gained carborundum porous ceramics pore size distribution is more even, easily control.But this method resulting product porosity lower (45～60%), complex forming technology, product purity is low.Zhu Xinwen etc. have reported another preparation method at " Mater Sci Eng, 2002, A323:232-238 ", and promptly adopting has silicon carbide micro-powder, α-Al
2O
3, carboxymethyl cellulose, clay and silicon sol preparation mud dipping organic foam, success develop the silicon carbide screen like and porous ceramic that can be used for filtering molten metal and handle high-temperature flue gas.This method technology is simple, easy to operate, and is not high to equipment requirements, with low cost, is suitable for industrialization, but can not prepare the small-bore goods of high purity, complex-shaped, composition controllable density.In addition, the eliminating of organic foam also can cause environmental pollution problems in preparation process." J Eur Ceram Soc; 1998; 18 (14): 1961-1973 " report has at first obtained preform with natural timber carbonizing treatment in inert atmosphere of different apertures and composition, then liquid-state silicon is injected wherein, made silicon and carbon prepared in reaction go out to inherit the porous silicon carbide material of natural timber structure.These method raw material sources extensively, good economy performance, easily processing, easy mass production, and Environmental compatibility is good, but the aperture size of this method gained porous silicon carbide material and void content distribute and be subjected to the control of initial wood materials structure and performance.French Patent (application number: 87-14742) reported a kind of method that adopts high-ratio surface activated carbon and the reaction of gas phase silicon monoxide to generate porous silicon carbide, but the carbofrax material pore size distribution range of this method preparation is wide.Patent WO 03/024892 A1 has also reported a kind of method of porous silicon carbide ceramic, and the main raw material of this method comprises: SiC powder (main raw material), SiO
2Powder or Si powder (silicon source), carbon black or Graphite Powder 99 (carbon source) and at least a organism (binding agent).These raw materials are made behind the base mud by having made porous silicon carbide ceramic after the operations such as moulding, drying, cracking and high temperature sintering, performances such as its aperture, porosity can be controlled by changing proportioning raw materials and processing condition, but this method temperature of reaction very high (2200～2600 ℃).It is silicon source and carbon source with silica flour and carbon dust respectively that U.S. Pat 005248462A has also introduced a kind of, shot or other sphere materials are the continuous preparation technology that pore-forming material prepares the foam silicon carbon material, this technology (evenly wraps in the mixture of silica flour, carbon dust and binding agent on the shot by moulding, and fill up hole between the shot), heating (remove low-melting shot and form the hole) and three steps of high temperature sintering (making the reaction of silicon and carbon generate) generate the foam silicon carbon material, still the aperture of this method gained porous silicon carbide material is bigger.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of porous silicon carbide ceramic with high porosity, described method is a raw material with silica flour (silicon source), resol (binding agent) and alcohol, after the mixed technology of bag, low-temp low-pressure moulding, high temperature cabonization processing and four step process of high temperature sintering, obtain the porous silicon carbide ceramic with high porosity material, it is characterized in that: concrete processing step is:
1) by the mass ratio 1 of silica flour, resol and alcohol: (0.25～1.1): 2 are mixed into slurry;
2) preparation coat mix powder: mixed slurry is heat-treated at 30～80 ℃, and stir 30～120min; Be cooled to then below 10 ℃, 10～60min is stirred in deepfreeze in 0～10 ℃ of scope simultaneously again; Mixed slurry is injected in the entry injection pressure 0.2～1.2MPa; And carry out burin-in process, churning time 30～120min at 30～90 ℃; The vacuum-drying temperature is 40～100 ℃, and be 30～120min time of drying, obtains the powder that the resol bag mixes silica flour;
3) powder that the resol bag is mixed silica flour is at the low-temp low-pressure molding ceramic green: 60～100 ℃ of mold temperatures; Forming pressure 0.05～0.2MPa; Soaking time 30～120min obtains ceramic green;
4) carbonizing treatment of ceramic green: 600～1000 ℃ of carbonization temperatures; 0.3～1 ℃/min of temperature rise rate; Argon flow amount 50～200ml/min carries out carbonization to ceramic green under soaking time 1～4h;
5) high temperature sintering is handled: with the ceramic green of carbonizing treatment 1300～1800 ℃ of sintering temperatures; Temperature rise rate 1-5 ℃/min; At flow is the argon shield of 50～200ml/min or under vacuum condition; Soaking time 1～8 hour finally obtains the porous silicon carbide ceramic with high porosity material.
2124 resol of 2120 resol that described resol as binding agent is Xinhua Resin Factory, Shanghai, 214 resol, Changchun chemical industry two factories, 401 resol and 407 resol of Tianjin resin processing plant, Suzhou resin processing plant and the ammonia resol of Beijing 251 factories and in the ba phenolic resin any one.
Beneficial effect of the present invention is bag to be mixed technology, low-temp low-pressure moulding, high temperature cabonization processing and high-sintering process combine, and utilizes silica flour and resol to prepare the porous silicon carbide ceramic with high porosity material.Therefore, this law can reduce cost greatly and process implementing carries out the transition to production in enormous quantities simply, easily, be a kind ofly can prepare high strength, high porosity (greater than 80%), mean pore size is in the method for the porous silicon carbide ceramic of 100～300 μ m and even aperture distribution.
Embodiment
The invention provides a kind of preparation method of porous silicon carbide ceramic with high porosity, described method is a raw material with silica flour (silicon source), resol (binding agent) and alcohol, after the mixed technology of bag, low-temp low-pressure moulding, high temperature cabonization processing and four step process of high temperature sintering, obtain the porous silicon carbide ceramic with high porosity material, it is characterized in that: concrete processing step is:
1) by the mass ratio 1 of silica flour, resol and alcohol: (0.25～1.1): 2 are mixed into slurry;
2) preparation coat mix powder: mixed slurry is heat-treated at 30～80 ℃, and stir 30～120min; Be cooled to then below 10 ℃, 10～60min is stirred in deepfreeze in 0～10 ℃ of scope simultaneously again; Mixed slurry is injected in the entry injection pressure 0.2～1.2MPa; And carry out burin-in process, churning time 30～120min at 30～90 ℃; The vacuum-drying temperature is 40～100 ℃, and be 30～120min time of drying, obtains the powder that the resol bag mixes silica flour;
3) powder that the resol bag is mixed silica flour is at the low-temp low-pressure molding ceramic green: 60～100 ℃ of mold temperatures; Forming pressure 0.05～0.2MPa; Soaking time 30～120min obtains ceramic green;
4) carbonizing treatment of ceramic green: 600～1000 ℃ of carbonization temperatures; 0.3～1 ℃/min of temperature rise rate; Argon flow amount 50～200ml/min carries out carbonization to ceramic green under soaking time 1～4h;
5) high temperature sintering is handled: with the ceramic green of carbonizing treatment 1300～1800 ℃ of sintering temperatures; Temperature rise rate 1-5 ℃/min; At flow is the argon shield of 50～200ml/min or under vacuum condition; Soaking time 1～8 hour finally obtains the porous silicon carbide ceramic with high porosity material.
2124 resol of 2120 resol that described resol as binding agent is Xinhua Resin Factory, Shanghai, 214 resol, Changchun chemical industry two factories, 401 resol and 407 resol of Tianjin resin processing plant, Suzhou resin processing plant and the ammonia resol of Beijing 251 factories and in the ba phenolic resin any one.
The present invention be listed below embodiment in order better to explain:
Embodiment 1
At first adopt bag to mix technology silica flour, ba phenolic resin are mixed with alcohol (mass ratio 1: 0.25: 2), at 30 ℃ of thermal treatment 120min, at 0 ℃ of deepfreeze 10min, injection pressure 0.2MPa, at 30 ℃ of burin-in process 120min,, obtain coat mix powder at 40 ℃ of vacuum-drying 120min; Then with coat mix powder at 60 ℃, 0.05MPa pressure down insulation 120min moulding obtains ceramic green; Then ceramic green (50ml/min) in argon gas is carried out high temperature cabonization and handle, temperature is 600 ℃, 0.3 ℃/min of temperature rise rate, insulation 240min; The powder (50ml/min) under argon shield that carbonizing treatment is obtained carries out high temperature sintering at last, and temperature is 1300 ℃, and 1 ℃/min of temperature rise rate is incubated 8 hours and forms the porous silicon carbide ceramic with high porosity material.
Embodiment 2
At first adopt bag to mix technology silica flour, ba phenolic resin are mixed with alcohol (mass ratio 1: 0.25: 2), at 30 ℃ of thermal treatment 120min, at 0 ℃ of deepfreeze 10min, injection pressure 0.2MPa, at 30 ℃ of burin-in process 120min,, obtain coat mix powder at 40 ℃ of vacuum-drying 120min; Then with coat mix powder at 80 ℃, 0.1MPa pressure down insulation 60min moulding obtains ceramic green; Then ceramic green (100ml/min) in argon gas is carried out high temperature cabonization and handle, temperature is 800 ℃, 0.5 ℃/min of temperature rise rate, insulation 120min; The powder (100ml/min) under argon shield that carbonizing treatment is obtained carries out high temperature sintering at last, and temperature is 1500 ℃, and 2.5 ℃/min of temperature rise rate is incubated 4 hours and forms the porous silicon carbide ceramic with high porosity material.
Embodiment 3
At first adopt bag to mix technology silica flour, ba phenolic resin are mixed with alcohol (mass ratio 1: 0.5: 2), at 30 ℃ of thermal treatment 120min, at 0 ℃ of deepfreeze 10min, injection pressure 0.2MPa, at 30 ℃ of burin-in process 120min,, obtain coat mix powder at 40 ℃ of vacuum-drying 120min; Then with coat mix powder at 100 ℃, 0.2MPa pressure down insulation 30min moulding obtains ceramic green; Then ceramic green (200ml/min) in argon gas is carried out high temperature cabonization and handle, temperature is 1000 ℃, 1 ℃/min of temperature rise rate, insulation 60min; The powder (200ml/min) under argon shield that carbonizing treatment is obtained carries out high temperature sintering at last, and temperature is 1800 ℃, and 5 ℃/min of temperature rise rate is incubated 1 hour and forms the porous silicon carbide ceramic with high porosity material.
Embodiment 4
At first adopt bag to mix technology silica flour, ba phenolic resin are mixed with alcohol (mass ratio 1: 0.8: 2), at 45 ℃ of thermal treatment 90min, at 5 ℃ of deepfreeze 30min, injection pressure 0.6MPa, at 60 ℃ of burin-in process 90min,, obtain coat mix powder at 60 ℃ of vacuum-drying 90min; Then with coat mix powder at 60 ℃, 0.05MPa pressure down insulation 120min moulding obtains ceramic green; Then ceramic green (100ml/min) in argon gas is carried out high temperature cabonization and handle, temperature is 800 ℃, 0.5 ℃/min of temperature rise rate, insulation 120min; The powder (200ml/min) under argon shield that carbonizing treatment is obtained carries out high temperature sintering at last, and temperature is 1800 ℃, and 5 ℃/min of temperature rise rate is incubated 1 hour and forms the porous silicon carbide ceramic with high porosity material.
Embodiment 5
At first adopt bag to mix technology silica flour, ba phenolic resin are mixed with alcohol (mass ratio 1: 0.5: 2), at 45 ℃ of thermal treatment 90min, at 5 ℃ of deepfreeze 30min, injection pressure 0.6MPa, at 60 ℃ of burin-in process 90min,, obtain coat mix powder at 60 ℃ of vacuum-drying 90min; Then with coat mix powder at 80 ℃, 0.1MPa pressure down insulation 60min moulding obtains ceramic green; Then ceramic green (200ml/min) in argon gas is carried out high temperature cabonization and handle, temperature is 1000 ℃, 1 ℃/min of temperature rise rate, insulation 60min; At last the powder (50ml/min) under argon shield that carbonizing treatment obtained is carried out high temperature sintering, temperature is 1300 ℃, and 1 ℃/min of temperature rise rate is incubated 8 hours and forms the porous silicon carbide ceramic with high porosity material.
Embodiment 6
At first adopt bag to mix technology silica flour, ba phenolic resin are mixed with alcohol (mass ratio 1: 0.5: 2), at 45 ℃ of thermal treatment 90min, at 5 ℃ of deepfreeze 30min, injection pressure 0.6MPa, at 60 ℃ of burin-in process 90min,, obtain coat mix powder at 60 ℃ of vacuum-drying 90min; Then with coat mix powder at 100 ℃, 0.2MPa pressure down insulation 30min moulding obtains ceramic green; Then ceramic green (50ml/min) in argon gas is carried out high temperature cabonization and handle, temperature is 600 ℃, 0.3 ℃/min of temperature rise rate, insulation 240min; At last the powder (100ml/min) under argon shield that carbonizing treatment obtained is carried out high temperature sintering, temperature is 1500 ℃, and 2.5 ℃/min of temperature rise rate is incubated 4 hours and forms the porous silicon carbide ceramic with high porosity material.
Embodiment 7
At first adopt bag to mix technology silica flour, ba phenolic resin are mixed with alcohol (mass ratio 1: 1.1: 2), at 80 ℃ of thermal treatment 60min, at 10 ℃ of deepfreeze 60min, injection pressure 1.2MPa, at 90 ℃ of burin-in process 60min,, obtain coat mix powder at 100 ℃ of vacuum-drying 30min; Then with coat mix powder at 60 ℃, 0.05MPa pressure down insulation 120min moulding obtains ceramic green; Then ceramic green (200ml/min) in argon gas is carried out high temperature cabonization and handle, temperature is 1000 ℃, 1 ℃/min of temperature rise rate, insulation 60min; The powder (100ml/min) under argon shield that carbonizing treatment is obtained carries out high temperature sintering at last, and temperature is 1500 ℃, and 2.5 ℃/min of temperature rise rate is incubated 4 hours and forms the porous silicon carbide ceramic with high porosity material.
Embodiment 8
At first adopt bag to mix technology silica flour, ba phenolic resin are mixed with alcohol (mass ratio 1: 1.1: 2), at 80 ℃ of thermal treatment 60min, at 10 ℃ of deepfreeze 60min, injection pressure 1.2MPa, at 90 ℃ of burin-in process 60min,, obtain coat mix powder at 100 ℃ of vacuum-drying 30min; Then with coat mix powder at 80 ℃, 0.1MPa pressure down insulation 60min moulding obtains ceramic green; Then ceramic green (50ml/min) in argon gas is carried out high temperature cabonization and handle, temperature is 600 ℃, 0.3 ℃/min of temperature rise rate, insulation 240min; The powder (200ml/min) under argon shield that carbonizing treatment is obtained carries out high temperature sintering at last, and temperature is 1800 ℃, and 5 ℃/min of temperature rise rate is incubated 1 hour and forms the porous silicon carbide ceramic with high porosity material.
Embodiment 9
At first adopt bag to mix technology silica flour, ba phenolic resin are mixed with alcohol (mass ratio 1: 1.1: 2), at 80 ℃ of thermal treatment 60min, at 10 ℃ of deepfreeze 60min, injection pressure 1.2MPa, at 90 ℃ of burin-in process 60min,, obtain coat mix powder at 100 ℃ of vacuum-drying 30min; Then with coat mix powder at 100 ℃, 0.2MPa pressure down insulation 30min moulding obtains ceramic green; Then ceramic green (100ml/min) in argon gas is carried out high temperature cabonization and handle, temperature is 800 ℃, 0.5 ℃/min of temperature rise rate, insulation 120min; The powder (50ml/min) under argon shield that carbonizing treatment is obtained carries out high temperature sintering at last, and temperature is 1300 ℃, and 1 ℃/min of temperature rise rate is incubated 8 hours and forms the porous silicon carbide ceramic with high porosity material.
Embodiment 10
At first adopt bag to mix technology silica flour, ammonia resol are mixed with alcohol (mass ratio 1: 0.8: 2), at 45 ℃ of thermal treatment 90min, at 5 ℃ of deepfreeze 30min, injection pressure 0.6MPa, at 60 ℃ of burin-in process 90min,, obtain coat mix powder at 60 ℃ of vacuum-drying 90min; Then with coat mix powder at 80 ℃, 0.1MPa pressure down insulation 60min moulding obtains ceramic green; Then ceramic green (100ml/min) in argon gas is carried out high temperature cabonization and handle, temperature is 800 ℃, 0.5 ℃/min of temperature rise rate, insulation 120min; At last the powder (50ml/min) under argon shield that obtains after the carbonizing treatment is carried out high temperature sintering, temperature is 1300 ℃, and 1 ℃/min of temperature rise rate is incubated 8 hours and forms the porous silicon carbide ceramic with high porosity material.
Embodiment 11
At first adopt bag to mix technology silica flour, 407 resol are mixed with alcohol (mass ratio 1: 0.5: 2), at 45 ℃ of thermal treatment 90min, at 5 ℃ of deepfreeze 30min, injection pressure 0.6MPa, at 60 ℃ of burin-in process 90min,, obtain coat mix powder at 60 ℃ of vacuum-drying 90min; Then with coat mix powder at 80 ℃, 0.1MPa pressure down insulation 60min moulding obtains ceramic green; Then ceramic green (100ml/min) in argon gas is carried out high temperature cabonization and handle, temperature is 600 ℃, 0.5 ℃/min of temperature rise rate, insulation 120min; The powder (50ml/min) under argon shield that carbonizing treatment is obtained carries out high temperature sintering at last, and temperature is 1300 ℃, and 1 ℃/min of temperature rise rate is incubated 8 hours and forms the porous silicon carbide ceramic with high porosity material.
Embodiment 12
At first adopt bag to mix technology silica flour, 401 resol are mixed with alcohol (mass ratio 1: 0.5: 2), at 45 ℃ of thermal treatment 90min, at 5 ℃ of deepfreeze 30min, injection pressure 0.6MPa, at 60 ℃ of burin-in process 90min,, obtain coat mix powder at 60 ℃ of vacuum-drying 90min; Then with coat mix powder at 80 ℃, 0.05MPa pressure down insulation 120min moulding obtains ceramic green; Then ceramic green (50ml/min) in argon gas is carried out high temperature cabonization and handle, temperature is 800 ℃, 0.5 ℃/min of temperature rise rate, insulation 120min; The powder (100ml/min) under argon shield that carbonizing treatment is obtained carries out high temperature sintering at last, and temperature is 1600 ℃, and 5 ℃/min of temperature rise rate is incubated 4 hours and forms the porous silicon carbide ceramic with high porosity material.
Embodiment 13
At first adopt bag to mix technology silica flour, ammonia resol are mixed with alcohol (mass ratio 1: 0.5: 2), at 45 ℃ of thermal treatment 90min, at 5 ℃ of deepfreeze 30min, injection pressure 0.6MPa, at 60 ℃ of burin-in process 90min,, obtain coat mix powder at 60 ℃ of vacuum-drying 90min; Then with coat mix powder at 80 ℃, 0.05MPa pressure down insulation 120min moulding obtains ceramic green; Then ceramic green (50ml/min) in argon gas is carried out high temperature cabonization and handle, temperature is 800 ℃, 0.5 ℃/min of temperature rise rate, insulation 120min; The powder that carbonizing treatment is obtained carries out high temperature sintering in a vacuum at last, and temperature is 1600 ℃, and 5 ℃/min of temperature rise rate is incubated 4 hours and forms the porous silicon carbide ceramic with high porosity material.
Claims (2)
1. the preparation method of a porous silicon carbide ceramic with high porosity, described method is a raw material with silica flour, resol and alcohol, after the mixed technology of bag, low-temp low-pressure moulding, high temperature cabonization processing and four step process of high temperature sintering, obtain the porous silicon carbide ceramic with high porosity material, it is characterized in that: concrete processing step is:
1) by the mass ratio 1 of silica flour, resol and alcohol: (0.25～1.1): 2 are mixed into slurry;
2) preparation coat mix powder: mixed slurry is heat-treated at 30～80 ℃, and stir 30～120min; Be cooled to then below 10 ℃, 10～60min is stirred in deepfreeze in 0～10 ℃ of scope simultaneously again; Mixed slurry is injected in the entry injection pressure 0.2～1.2MPa; And carry out burin-in process, churning time 30～120min at 30～90 ℃; The vacuum-drying temperature is 40～100 ℃, and be 30～120min time of drying, obtains the powder that the resol bag mixes silica flour;
3) powder that the resol bag is mixed silica flour is at the low-temp low-pressure molding ceramic green: 60～100 ℃ of mold temperatures; Forming pressure 0.05～0.2MPa; Soaking time 30～120min obtains ceramic green;
4) carbonizing treatment of ceramic green: 600～1000 ℃ of carbonization temperatures; 0.3～1 ℃/min of temperature rise rate; Argon flow amount 50～200ml/min carries out carbonization to ceramic green under soaking time 1～4h;
5) high temperature sintering is handled: with the ceramic green of carbonizing treatment 1300～1800 ℃ of sintering temperatures; Temperature rise rate 1-5 ℃/min; At flow is the argon shield of 50～200ml/min or under vacuum condition; Soaking time 1～8 hour finally obtains the porous silicon carbide ceramic with high porosity material.
2. the preparation method of a kind of porous silicon carbide ceramic with high porosity according to claim 1, it is characterized in that 2124 resol of 2120 resol that described resol as binding agent is Xinhua Resin Factory, Shanghai, 214 resol, Changchun chemical industry two factories, 401 resol and 407 resol of Tianjin resin processing plant, Suzhou resin processing plant and the ammonia resol of Beijing 251 factories and in the ba phenolic resin any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100769931A CN100395211C (en) | 2005-06-14 | 2005-06-14 | Method for preparing porous silicon carbide ceramic with high porosity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100769931A CN100395211C (en) | 2005-06-14 | 2005-06-14 | Method for preparing porous silicon carbide ceramic with high porosity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1699285A CN1699285A (en) | 2005-11-23 |
| CN100395211C true CN100395211C (en) | 2008-06-18 |
Family
ID=35475568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100769931A Active CN100395211C (en) | 2005-06-14 | 2005-06-14 | Method for preparing porous silicon carbide ceramic with high porosity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100395211C (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384781C (en) * | 2006-12-06 | 2008-04-30 | 中国科学院上海硅酸盐研究所 | Method for preparing silicon carbide porous ceramic using gelatin wrapping-freeze drying process |
| CN101555138B (en) * | 2008-04-09 | 2013-04-03 | 中国科学院金属研究所 | Silicon carbide foamed ceramic corrugated plate and preparation method thereof |
| CN101323524B (en) * | 2008-04-15 | 2011-04-06 | 西安交通大学 | Preparation of oriented hole silicon carbide porous ceramic |
| CN102010226B (en) * | 2010-12-09 | 2012-10-17 | 东北大学 | Macroporous SiC ceramic preparation method |
| CN102303978A (en) * | 2011-06-03 | 2012-01-04 | 清华大学 | Method for preparing porous silicon carbide ceramic with high strength |
| CN103803983B (en) * | 2014-02-27 | 2016-02-17 | 中原工学院 | Fermentation method prepares the method for porous silicon carbide |
| CN103803982B (en) * | 2014-02-27 | 2016-02-17 | 中原工学院 | Rice husk piles up the preparation method of porous silicon carbide |
| CN106565258B (en) * | 2016-10-08 | 2019-08-16 | 江苏省陶瓷研究所有限公司 | A kind of winding preparation method of high porosity porous ceramics pipe |
| CN106588085B (en) * | 2016-12-22 | 2019-07-16 | 哈尔滨工业大学 | A kind of preparation method of high-temperature-resistant structure type SiC porous ceramics |
| CN109082731B (en) * | 2018-08-20 | 2020-01-10 | 天津工业大学 | Crosslinked porous carbon nanofiber and preparation method thereof |
| CN109942310B (en) * | 2019-03-19 | 2021-05-11 | 广东工业大学 | Preparation method of high-performance silicon nitride porous ceramic |
| CN111548183B (en) * | 2020-06-02 | 2021-09-03 | 西安交通大学 | Method for preparing graded porous silicon carbide ceramic by gel casting and carbothermic reduction |
| CN111592332A (en) * | 2020-06-05 | 2020-08-28 | 深圳职业技术学院 | Environment-friendly heat-insulation core material and preparation method thereof |
| CN112851395B (en) * | 2021-03-02 | 2022-08-05 | 武汉理工大学 | Oriented laminated porous SiC material and in-situ synthesis method thereof |
| CN113716975B (en) * | 2021-09-07 | 2022-09-16 | 华中科技大学 | Method for preparing wood biomass porous silicon carbide through 3D printing and porous silicon carbide |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US655031A (en) * | 1899-03-04 | 1900-07-31 | John W Sutton | Machine for plucking pelts. |
| JPS4839515A (en) * | 1971-09-22 | 1973-06-11 | ||
| US5093289A (en) * | 1988-04-12 | 1992-03-03 | Heliotronic Forschungs- Und Entwicklungsgesellschaft Fur Solarzellen-Grundstoffe Mbh | Ceramic material permitting the passage of fluids and based on silicon powder reaction-bonded in the presence of carbon |
| US5589428A (en) * | 1992-07-08 | 1996-12-31 | The Carborundum Company | Silicon carbide with controlled porosity |
| EP1284251A1 (en) * | 2001-08-17 | 2003-02-19 | Eiji Tani | Silicon carbide-based, porous, lightweight, heat-resistant structural material and manufacturing method therefor |
-
2005
- 2005-06-14 CN CNB2005100769931A patent/CN100395211C/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US655031A (en) * | 1899-03-04 | 1900-07-31 | John W Sutton | Machine for plucking pelts. |
| JPS4839515A (en) * | 1971-09-22 | 1973-06-11 | ||
| US5093289A (en) * | 1988-04-12 | 1992-03-03 | Heliotronic Forschungs- Und Entwicklungsgesellschaft Fur Solarzellen-Grundstoffe Mbh | Ceramic material permitting the passage of fluids and based on silicon powder reaction-bonded in the presence of carbon |
| US5589428A (en) * | 1992-07-08 | 1996-12-31 | The Carborundum Company | Silicon carbide with controlled porosity |
| EP1284251A1 (en) * | 2001-08-17 | 2003-02-19 | Eiji Tani | Silicon carbide-based, porous, lightweight, heat-resistant structural material and manufacturing method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1699285A (en) | 2005-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100395211C (en) | Method for preparing porous silicon carbide ceramic with high porosity | |
| CN104311090B (en) | A kind of hot pressed sintering/presoma cracking process prepares the method for Cf/ZrC-SiC ultrahigh temperature ceramic composite | |
| CN103145438B (en) | Preparation method of biomimetic gradient porous ceramic material | |
| US7799375B2 (en) | Process for the manufacturing of dense silicon carbide | |
| CN111533572A (en) | Preparation method of porous silicon carbide ceramic support | |
| Durif et al. | Open-celled silicon carbide foams with high porosity from boron-modified polycarbosilanes | |
| CN109437959B (en) | Method for preparing mullite fiber-based porous ceramic by using environment-friendly gel casting | |
| CN106747367B (en) | Preparation method of compact chromium oxide product with high thermal shock stability | |
| CN108033801A (en) | Silicon nitride nanowire reinforced porous silicon nitride composite material and preparation method thereof | |
| Liu et al. | Fabrication of pure SiC ceramic foams using SiO2 as a foaming agent via high-temperature recrystallization | |
| CN111925229A (en) | Method for preparing high-performance foamed ceramic by combining template method with chemical vapor infiltration method | |
| CN108129156A (en) | A kind of carbon ceramic composite material and its precursor impregnation preparation method | |
| CN108752038A (en) | It is a kind of with can be thermally cured Polycarbosilane preparation foam silicon carbide ceramics | |
| CN105084364B (en) | A kind of preparation technology of porous silicon carbide spherical powder | |
| CN101805201B (en) | Preparation method of porous silicon carbide ceramics with high thermal shock resistance | |
| CN100582059C (en) | Method for preparing foam silicon nitride ceramics | |
| CN112521177B (en) | Low-melting-point porous ceramic material and preparation method thereof | |
| CN111747748B (en) | Ultrahigh-temperature heat-proof/insulation integrated ZrC/Zr 2 C complex phase material and preparation method thereof | |
| CN111763097B (en) | Method for preparing porous ceramic by using coal gangue | |
| CN108558409A (en) | A kind of foam silicon carbide ceramics and use the liquid metal filter that it is material | |
| CN108794053A (en) | A kind of material is the porous media combustor of foam silicon carbide ceramics | |
| CN105016773A (en) | Method for preparing porous silicon carbide ceramic through reactive sintering and micro-oxidation treatment | |
| Li et al. | Low-temperature thermally modified fir-derived biomorphic C–SiC composites prepared by sol-gel infiltration | |
| CN114349516B (en) | Method for synthesizing high-density SiC ceramic at low temperature | |
| CN106830906B (en) | Densification method of low-gradient-difference chromium oxide product |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |