WO2003031331A1 - Procedimiento para la fabricación de ceramicas de carburo de silicio a partir de precursores vegetales - Google Patents
Procedimiento para la fabricación de ceramicas de carburo de silicio a partir de precursores vegetales Download PDFInfo
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- WO2003031331A1 WO2003031331A1 PCT/ES2002/000483 ES0200483W WO03031331A1 WO 2003031331 A1 WO2003031331 A1 WO 2003031331A1 ES 0200483 W ES0200483 W ES 0200483W WO 03031331 A1 WO03031331 A1 WO 03031331A1
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- WIPO (PCT)
- Prior art keywords
- silicon
- silicon carbide
- precursors
- wood
- carbide ceramics
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
- C04B35/62655—Drying, e.g. freeze-drying, spray-drying, microwave or supercritical drying
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/5607—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on refractory metal carbides
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/5607—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on refractory metal carbides
- C04B35/5611—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on refractory metal carbides based on titanium carbides
- C04B35/5615—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on refractory metal carbides based on titanium carbides based on titanium silicon carbides
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/5607—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on refractory metal carbides
- C04B35/5611—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on refractory metal carbides based on titanium carbides
- C04B35/5618—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on refractory metal carbides based on titanium carbides based on titanium aluminium carbides
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/5607—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on refractory metal carbides
- C04B35/5622—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on refractory metal carbides based on zirconium or hafnium carbides
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
- C04B35/573—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide obtained by reaction sintering or recrystallisation
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- C—CHEMISTRY; METALLURGY
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
- C04B35/62209—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse using woody material, remaining in the ceramic products
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
- C04B35/6267—Pyrolysis, carbonisation or auto-combustion reactions
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
- C04B35/6268—Thermal treatment of powders or mixtures thereof other than sintering characterised by the applied pressure or type of atmosphere, e.g. in vacuum, hydrogen or a specific oxygen pressure
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/72—Products characterised by the absence or the low content of specific components, e.g. alkali metal free alumina ceramics
- C04B2235/728—Silicon content
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Definitions
- the present invention relates to a process for manufacturing silicon carbide (SiC) ceramics from plant precursors, specifically from the infiltration of liquid silicon into carbon preforms obtained by wood pyrolysis.
- SiC silicon carbide
- the invention is fundamentally applicable to the field of obtaining raw materials that can be used in a wide spectrum of industry, for obtaining abrasion resistant corrosion components, such as mechanical seals, valves, surface reduction, cutting parts, etc. , temperature-resistant components, such as heat exchangers, heating elements, protective tubes, etc., engine and turbine components, components of the steel and other metal industry, catalyst holders, cooling walls in nuclear fusion reactors, etc. .
- abrasion resistant corrosion components such as mechanical seals, valves, surface reduction, cutting parts, etc.
- temperature-resistant components such as heat exchangers, heating elements, protective tubes, etc.
- engine and turbine components components of the steel and other metal industry
- catalyst holders cooling walls in nuclear fusion reactors, etc.
- silicon carbide which has much higher performance than other ceramic materials and can be synthesized in the following:
- the silicon carbide powder is mixed with small amounts of boron and carbon and heated to temperatures between 2,000 and 1,300 ° C.
- This method presents a problem that focuses primarily on the high temperatures required in it, which in turn makes the use of more expensive technologies necessary, has a very critical temperature control and can only be done with optical pyrometers, which in turn they present problems of precision, transformations between the different polymorphisms of the silicon carbon can take place giving rise to anomalous grain size growth, a final finishing operation is needed that considerably increases the costs due to the wear resistance of the material, the Resistance of the final product decreases considerably at high temperatures, and the additives used for sintering can alter other properties such as corrosion resistance.
- a mixture of silicon carbide powder and carbon is reacted with gaseous or liquid silicon carbide, in a process in which the manufacturing temperature is below 1,410 ° C, but nevertheless the areas of contact between the carbide grains Silicon are small and the material has very low resistance to high temperatures since it is controlled by the flow of silicon.
- the new procedure for the manufacture of silicon carbide ceramics is based on the use of natural precursors, specifically in the use of wood, of different densities depending on the different products to be obtained, and in the procedure three operational phases are established:
- regenerable materials with the consequent non-production of environmental pollution, making it possible to manufacture complex shapes with the simple prior molding of the wood of origin, to which no additives are necessary, at a higher manufacturing speed and at a lower temperature than manufacturing processes by reaction with gases.
- the ceramics obtained have the fibrous structure of the wood used in manufacturing, ideal structure for optimal mechanical properties since it is the result of the improvement of the evolutionary process. With densities 50% lower, resistance similar to those of sintered silicon carbon and much higher than those of silicon carbon compacted by reaction are obtained.
- these materials are susceptible to use for applications that require high strength, low density, controlled property and / or high specific surface.
- these materials are likely to be used to obtain high temperature filters, components subject to friction, such as brake pads or high temperature seals, acoustic and thermal insulation elements, and structures Low density for medical implants.
- the three phases of the process mentioned above have the following characteristics:
- the drying phase of the wood is carried out in an oven for 24 hours and 70 ° C in the case of wood prepared for industrial use, while in the case of freshly cut wood you will be given a bath of alcohol and its period Drying will last up to 72 hours, at the same temperature of 70 °
- the pyrolysis process consisting of the decomposition by heating of the organic matter, is carried out in the absence of oxygen, so that volatile substances and water disappear as non-gases pollutants leaving coal as process waste. More specifically in the process of the invention, the pyrolysis is carried out at a heating rate between 0.5 and 2 ° C per minute to temperatures above 600 ° C. The heating rate is optimized for each type of wood, ensuring that the coal maintains the fibrous microstructure of the original wood. Once the maximum temperature is reached, the cooling will proceed at a speed between 1 and 5 ° C per minute, also optimized for each type of wood. This process is carried out with partial oxygen pressures of the order of 10 "4 Torr.
- the infiltration process is carried out with high purity silicon, preferably ground monocrystalline silicon, which will be placed in solid forms in areas that facilitate its subsequent infiltration in the proforma of carbon aided by capillary through the pores.
- the silicon and the preform will be placed in a non-reactive crucible, for example boron nitride.
- the amount of silicon is calculated so that the atomic reaction (1: 1) of the SiC compound is maintained.
- the carbon preform P c will be weighed first, then the number of carbon molds will be determined:
- the reaction temperature will be between 1,410 ° C and 1600 ° C, the filtration time will be determined depending on the size and shape of the proforma to be infiltrated and the process will be carried out with pressures below 10 "3 torr.
- the remaining silicon inside the sample can be removed by entering it in contact with another carbon proforma and thermally treating the whole in a vacuum above 1,410 ° C.
- a white eucalyptus wood cylinder with a length of 100 millimeters and a diameter of 42 millimeters is taken, so that the weight of said piece of wood is 106 grams before performing any process with it.
- the piece of wood is placed in the center of a metal tube
- argon inert gas
- the system is reheated, specifically at a speed of 0.4 ° C per minute to a final temperature of 1,000 ° C (the process heating takes 41 hours and 40 minutes).
- the temperature is maintained at 1,000 ° C for 30 minutes and subsequently cooled at a rate of 5 ° C per minute (the cooling time is 3 hours and 20 minutes).
- the piece of wood is transformed into a piece of coal that now has a length of 77 millimeters and a diameter of 26 millimeters, having passed its weight to 26 grams.
- a paralilepiped was cut from the carbon piece resulting from the previous pyrolysis process, so that the dimensions of said paralylepiped are 74'5 millimeters by 4.6 millimeters by 3'2 millimeters and its weight is 0 '596 grams.
- 1,973 grams of monocrystalline silicon are placed on the piece of coal and the assembly is placed in a crucible whose walls have been coated with boron nitride.
- the crucible is introduced into a tube oven in which the vacuum is then made with the help of a rotary pump.
- the system is heated at a speed of 10 ° C per minute to 1,550 ° C (heating time of 2 hours and 25 minutes). The aforementioned temperature is maintained for 30 minutes and subsequently cooling to 10 ° C per minute until room temperature (cooling time 2 hours and 25 minutes).
- the rotary pump air is introduced into the tube and the crucible is removed.
- the sample of biomorphic ceramics obtained as a final result has dimensions of 74.5 millimeters by 4.6 millimeters by 3 '2 millimeters, that is, it does not change its size appreciably, and weighs 2,394 grams.
- Softwoods such as pine give rise to structures that can be applied to high temperature filters or catalyst holders due to the homogeneity of their porosity and the high specific surface area.
- Precursors such as bamboo can be used to make silicon carbide tubes.
- Dense woods such as eucalyptus or oak, produce fibrous materials susceptible to structural applications, such as the manufacture of reinforcing elements.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Combustion & Propulsion (AREA)
- Ceramic Products (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60203198T DE60203198T2 (de) | 2001-10-11 | 2002-10-11 | Verfahren zur herstellung von siliciumcarbidkeramiken aus pflanzlichen vorläufern |
AT02800616T ATE290509T1 (de) | 2001-10-11 | 2002-10-11 | Verfahren zur herstellung von siliciumcarbidkeramiken aus pflanzlichen vorläufern |
EP02800616A EP1452488B1 (en) | 2001-10-11 | 2002-10-11 | Method of producing silicon carbide ceramics from plant precursors |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ESP200102278 | 2001-10-11 | ||
ES200102278A ES2187371B1 (es) | 2001-10-11 | 2001-10-11 | Procedimiento para la fabricacion de ceramicas de carburo de silicio a partir de precursores vegetales. |
Publications (1)
Publication Number | Publication Date |
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WO2003031331A1 true WO2003031331A1 (es) | 2003-04-17 |
Family
ID=8499176
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2002/000483 WO2003031331A1 (es) | 2001-10-11 | 2002-10-11 | Procedimiento para la fabricación de ceramicas de carburo de silicio a partir de precursores vegetales |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1452488B1 (es) |
AT (1) | ATE290509T1 (es) |
DE (1) | DE60203198T2 (es) |
ES (2) | ES2187371B1 (es) |
WO (1) | WO2003031331A1 (es) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9326948B2 (en) | 2010-11-08 | 2016-05-03 | Consiglio Nazionale Delle Ricerche | Implants for “load bearing” bone substitutions having hierarchical organized architecture deriving from transformation of vegetal structures |
CN115161049A (zh) * | 2022-07-08 | 2022-10-11 | 南京航空航天大学 | 一种用于制备生物态陶瓷基复合材料的木材热解改性方法 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2187371B1 (es) * | 2001-10-11 | 2004-09-16 | Universidad De Sevilla | Procedimiento para la fabricacion de ceramicas de carburo de silicio a partir de precursores vegetales. |
ES2304207B1 (es) * | 2006-11-07 | 2009-08-13 | Universidad De Vigo | Obtencion de ceramicas biomorficas de sic a partir de recursos marinos. |
CN102093055B (zh) * | 2010-12-31 | 2012-08-15 | 厦门大学 | 一种碳化硅/碳化钛复相陶瓷的制备方法 |
PE20212280A1 (es) * | 2021-06-30 | 2021-11-30 | Univ Catolica San Pablo | Procedimiento para la elaboracion de un agente de reforzamiento mecanico de materiales y un mortero reforzado de cemento hidraulico obtenido a partir de dicho procedimiento |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4564496A (en) * | 1981-03-05 | 1986-01-14 | Kernforschungsanlage Julich Gmbh | Method of making porous silicon carbide bodies |
US5380475A (en) * | 1991-11-09 | 1995-01-10 | Deutsche Aerospace | Process for manufacturing an oxidation-stable component on a CFC base, particularly for space travel |
RU2117026C1 (ru) * | 1996-07-31 | 1998-08-10 | Еремин Валерий Петрович | Способ пиролитического получения древесного угля |
US5865922A (en) * | 1994-06-21 | 1999-02-02 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Producing fiber reinforced composites having dense ceramic matrices |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2187371B1 (es) * | 2001-10-11 | 2004-09-16 | Universidad De Sevilla | Procedimiento para la fabricacion de ceramicas de carburo de silicio a partir de precursores vegetales. |
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2001
- 2001-10-11 ES ES200102278A patent/ES2187371B1/es not_active Expired - Fee Related
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2002
- 2002-10-11 DE DE60203198T patent/DE60203198T2/de not_active Expired - Lifetime
- 2002-10-11 WO PCT/ES2002/000483 patent/WO2003031331A1/es not_active Application Discontinuation
- 2002-10-11 AT AT02800616T patent/ATE290509T1/de not_active IP Right Cessation
- 2002-10-11 EP EP02800616A patent/EP1452488B1/en not_active Expired - Lifetime
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2008
- 2008-03-14 ES ES200800743A patent/ES2334620B1/es not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4564496A (en) * | 1981-03-05 | 1986-01-14 | Kernforschungsanlage Julich Gmbh | Method of making porous silicon carbide bodies |
US5380475A (en) * | 1991-11-09 | 1995-01-10 | Deutsche Aerospace | Process for manufacturing an oxidation-stable component on a CFC base, particularly for space travel |
US5865922A (en) * | 1994-06-21 | 1999-02-02 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Producing fiber reinforced composites having dense ceramic matrices |
RU2117026C1 (ru) * | 1996-07-31 | 1998-08-10 | Еремин Валерий Петрович | Способ пиролитического получения древесного угля |
Cited By (2)
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US9326948B2 (en) | 2010-11-08 | 2016-05-03 | Consiglio Nazionale Delle Ricerche | Implants for “load bearing” bone substitutions having hierarchical organized architecture deriving from transformation of vegetal structures |
CN115161049A (zh) * | 2022-07-08 | 2022-10-11 | 南京航空航天大学 | 一种用于制备生物态陶瓷基复合材料的木材热解改性方法 |
Also Published As
Publication number | Publication date |
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ES2334620A1 (es) | 2010-03-12 |
EP1452488B1 (en) | 2005-03-09 |
ES2334620B1 (es) | 2011-01-03 |
ES2187371A1 (es) | 2003-06-01 |
DE60203198D1 (de) | 2005-04-14 |
ES2187371B1 (es) | 2004-09-16 |
EP1452488A1 (en) | 2004-09-01 |
ATE290509T1 (de) | 2005-03-15 |
DE60203198T2 (de) | 2006-05-11 |
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