WO2010130272A1 - Ceramic carbide fiber, method for making the ceramic carbide fiber and application of the ceramic carbide fiber - Google Patents
Ceramic carbide fiber, method for making the ceramic carbide fiber and application of the ceramic carbide fiber Download PDFInfo
- Publication number
- WO2010130272A1 WO2010130272A1 PCT/EP2009/003371 EP2009003371W WO2010130272A1 WO 2010130272 A1 WO2010130272 A1 WO 2010130272A1 EP 2009003371 W EP2009003371 W EP 2009003371W WO 2010130272 A1 WO2010130272 A1 WO 2010130272A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fiber
- ceramic
- ceramic carbide
- carbide fiber
- mol
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- 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
- C04B35/62227—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining fibres
- C04B35/62272—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining fibres based on non-oxide ceramics
- C04B35/62277—Fibres based on carbides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- 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
- C04B35/624—Sol-gel processing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
- H01K3/02—Manufacture of incandescent bodies
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3251—Niobium oxides, niobates, tantalum oxides, tantalates, or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/441—Alkoxides, e.g. methoxide, tert-butoxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5264—Fibers characterised by the diameter of the fibers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Fibers (AREA)
Abstract
This invention relates to a ceramic carbide fiber, a method for making the ceramic carbide fiber and an application of the ceramic carbide fiber. The ceramic carbide fiber comprises a carbide solid solution with at least two transition metals. The ceramic carbide fiber comprises a fiber diameter selected from a range of 10 μm to 200 μm. By the presence of two ore more different transition metals the stability of the ceramic carbide fiber is increased. The method for making the ceramic carbide fiber the method comprises providing a mixture with liquid precursors of the carbide solid solution in a solvent; converting the mixture into a gel precursor solution by at least partially cross-linking of the liquid precursors; drawing a green fiber of cross-linked precursors out of the gel precursor solution; drying the green fiber by removing solvent and pyrolysing the dried green fiber, whereas the ceramic fiber is formed. The sol-gel-technique is used to fabricate the green fiber resulting in a high homogeneity of the ceramic carbide fiber by thermal decomposition of the green fiber. Due to the high stability the ceramic carbide fiber is used as a filament component of a lamp.
Description
Description
CERAMIC CARBIDE FIBER, METHOD FOR MAKING THE CERAMIC CARBIDE FIBER AND APPLICATION OF THE CERAMIC CARBIDE FIBER
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a ceramic carbide fiber, a method for making the ceramic carbide fiber and an application of the ceramic carbide fiber.
2. Description of the Related Art
From the publication "Formation of Inorganic (TaC, TaN) Fibers by Thermal Decomposition of Cellulose Acetate-Tantalum Alkoxide Precursor Gel Fibres" , Journal of Applied Polymer Science, Vol. 100 (2006) 4320 - 4324 a method for making pure Tantalum Carbide (TaC) fibers by sol-gel-technique is known.
TaC is a candidate material for high temperature thermal emitter due to its high melting temperature of above of 3800° C. However, at temperatures of above of 3000° C an exponential increase of a decomposition rate due to carbon evaporation occurs. Therefore, the use of TaC as filament material of lamps is improper.
SUMMARY OF THE INVENTION
It is an object of the invention to provide a ceramic carbide fiber, which can be used as filament material of lamps. Another object of the invention is the providing of a method for making the ceramic carbide fiber. The method should be easy and reproducible.
These objects are achieved by the inventions specified in the claims .
The idea behind the invention is a modification of the known ceramic carbide fibers and a modification of the known method for making the carbide fibers.
The present invention provides a ceramic carbide fiber comprising: a carbide solid solution with at least two transition metals; the fiber comprises a fiber diameter selected from a range of 10 μm to 200 μm. Substantially the fiber diameter is selected from the range of 20 μm to 80 μm and more particularly in the range of 20 μm to 60 μm. By the presence of two ore more different kinds of transition metals the chemical stability of the ceramic carbide fiber is increased.
Additionally, the present invention provides a method for making a ceramic carbide fiber, the ceramic carbide fiber comprising a carbide solid solution with at least two transition metals; the fiber comprises a fiber diameter selected from a range of 10 μm to 200 μm, the method comprising: providing a mixture with liquid precursors of the solid carbide solution in a solvent; converting the mixture into a gel precursor solution by at least partially cross- linking of the liquid precursors; drawing a green fiber of partly cross-linked precursors out of the gel precursor solution; drying the green fiber by removing solvent and pyrolysing the dried green fiber, whereas the ceramic fiber is formed.
The resulting ceramic carbide fiber can be used as a component of a fiber mat. Due to the high stability the ceramic carbide fiber is used as a filament component of a lamp .
The method is based on the sol-gel-technique. The converting of the mixture into a gel leads to an increase of the viscosity. When a certain viscosity range is achieved a spinnable mixture results. Green fibers (gel fibers with an
amorphous structure consisting of cross-linked precursors) can easily be drawn out of the spinnable mixture.
The precursors function as sources for carbon (carbon precursors) and sources for the transition metals (transition metal precursors) . Thereby not all of the precursors have to be liquid. Besides the liquid precursors solid precursors can be used, too.
Transition metal precursors include organic compounds like transition metal alkoxides as well as inorganic salts like transition metal chlorides. Carbon precursors are - for example - hydrochinone , saccharose, glycerol, ethylene glycol and phenolic resic.
Besides the providing an excellent mixture for drawing fibers the sol-gel-technique imply following special advantage: The fiber material of the resulting green fiber is extremely homogenous. The precursors are evenly distributed over the whole green fiber. By pyrolising (thermal decomposition) of the green fiber a ceramic carbide fiber with a very high chemical homogeneity results. The result is a carbide solid solution. The carbide solid solution consists of substantially just one chemical phase. Moreover, a microstructure of the resulting solid carbide solution is dense and uniform.
In a preferred embodiment the transition metals are selected from the groups 4 and 5 of the periodic table of the elements. Preferably the transition metals are selected from the group consisting of Hf, Nb, Ta, Ti and Zr. In particular with these transition metals the ceramic carbide fiber is stable at temperatures of above 3000° C. The decomposition rate is very low. The increase of the stability permits the use of the ceramic carbide fiber as filament material for lamps. With regard to the sol-gel-technique suitable precursors for these transition metals are - for example - tantalum pentaethoxide, niobium pentaethoxide, hafnium tetra-
isopropoxid, tantalum pentachloride and niobium pentachloride .
In a further preferred embodiment one of the transition metals is Ta and a proportion of Ta is selected from a range of 10 mol.% to 90 mol.%, particularly from a range of 60 mol.% to 80 mol.%.
Preferably the portion of Ta is substantially 70 mol.%. Very good results are achieved by the combination for the transition metals Ta and Nb. Preferably a second transition metal is Nb and a portion of Nb is substantially 20 mol.%. Alternatively the second transition metal is Hf and a portion of Hf is substantially 20 mol.%. More preferably there is a mixture of the second transition metals Nb and Hf with a total portion of 20 mol.%, e.g. Hf 10 mol.% and Nb mol.%.
As already mentioned, the sol-gel solution results in a spinnable mixture. In a preferred embodiment the drawing of a gel fiber of cross- linked precursors out of the gel includes therefore a spinning process. For example, the spinning process is carried out by a rotating container with a perforation. By this a continuous and rapid fabrication of green fibers is possible. Alternatively the drawing a gel fiber of cross-linked precursors out of the gel includes immersing an object into the gel. With the object the green fiber can be pulled out of the gel. For example, the object is a spatula or a glass bar.
More methods include the extrusion of the partly cross- linked solution and the gravity falling of the solution through a hole placed at the bottom of the container.
The pyrolysis is carried out at a temperature up to 2200 °C, e.g. at a temperature between 1400° C and 2200° C, and preferably in an inert atmosphere with Ar or N2. Vacuum is possible, too.
The resulting ceramic fiber of a carbide solid solution with at least two transition metals enhances the performance of
the ceramic carbide fibers with just one transition metal, e. g. TaC, HfC, NbC, ZrC or TiC by increasing the melting point, the corrosion resistance, the durability in harsh environments or the catalytic properties .
The main advantage of the method for making the ceramic fiber is based on the easiness of the fiber conformation, the plurality of different carbide solid solutions for the ceramic fiber, the chemical homogeneity and the good sintering of the green (organic) fiber into an inorganic one.
BRIEF DESCRIPTION OF THE DRAWING
The figure shows a picture of a ceramic carbide fiber with a solid carbide solution with the transition metals Ta and Nb.
DETAILED DESCRIPTION OF THE INVENTION
The ceramic carbide fiber is a solid carbide solution of Ta and Nb. The portion of Ta is about 80 mol . % . The portion of Nb is about 20 mol . % . The diameter of the ceramic fiber is about 50 μm (figure) .
The method for making the ceramic carbide fiber is starting with providing a mixture of liquid precursors for the carbide solid solution. The liquid transition metal precursors are tantalum pentaethoxide and niobium pentaethoxide with according amounts. Acetylacetone is added to the separate metal precursors under inert atmosphere . Acetylacetone functions as a complexing agent for the transition metal alkoxides . The complexed metal precursors are mixed. Hydrochinone is given to the mixture as a liquid carbon precursor.
The mixture increases its viscosity with the cross-linking of the liquid precursors. The viscosity of the mixture is increasing. By agitating the mixture an optimum viscosity in
view of the subsequent drawing process can be adjusted, before the sol undergo the gelling.
After that, the drawing of a green fiber of cross-linked precursors out of the gel is carried out by a spinning process . Drying the drawn green fiber by removing the solvents and pyrolysing the. dried green fiber in Ar atmosphere lead to the ceramic carbide fiber.
Alternatively the ceramic carbide fiber comprises a solid carbide solution of Ta and Hf. The portion of Ta is about 80 mol.%. The portion of Nb is about 20 mol.%. In a further alternative example the ceramic carbide fiber comprises a solid carbide solution of Ta, Nb and Hf. The portion of Ta is about 80 mol.%. The portion von Hf is about 10 mol.%. The portion of Nb is about 10 mol.%.
Claims
1. Ceramic carbide fiber comprising:
- a carbide solid solution with at least two transition metals;
- the fiber comprises a fiber diameter selected from a range of 10 μm to 200 μm.
2. Ceramic carbide fiber according to claim 1, wherein the fiber diameter is selected from the range of 20 μm to 80 μm.
3. Ceramic carbide fiber according to claim 1 or claim 2, wherein the transition metals are selected from the groups 4 and 5 of the periodic table of the elements .
4. Ceramic carbide fiber according to claim 3, wherein the transition metals are selected from the group consisting of Hf, Nb, Ta, Ti and Zr.
5. Ceramic carbide fiber according to claim 4, wherein one of the transition metals is Ta and a proportion of Ta is selected from a range of 5 mol . % to 95 mol.%, particularly from a range of 60 mol.% to 90 mol.%.
6. Ceramic carbide fiber according to claim 5, wherein the portion of Ta is substantially 80 mol.%.
7. Ceramic carbide fiber according to claim 6, wherein a second transition metal is Nb and a portion of Nb is substantially 20 mol.%.
8. Ceramic carbide fiber according to claim 6, wherein a second transition metal is Hf and a portion of Hf is substantially 20 mol.%.
9. Method for making a ceramic carbide fiber according to claim 1 to claim 8, the method comprising: - providing a mixture with liquid precursors of the carbide solid solution in a solvent;
- converting the mixture into a gel precursor solution by at least partially cross- linking of the liquid precursors; - drawing a green fiber of cross-linked precursors out of the gel precursor solution;
- drying the green fiber by removing solvent and
- pyrolysing the dried green fiber, whereas the ceramic fiber is formed.
10. Method according to claim 9, wherein the drawing a gel fiber of cross-linked precursors out of the gel precursor solution includes a spinning process .
11. Method according to claim 9 or claim 10, wherein the drawing a gel fiber of cross- linked precursors out of the gel includes an immersion of an object into the gel precursor solution.
12. Method according to claim 9 or claim 11, wherein the pyrolysis is carried out at a temperature up to 22000C.
13. Method according to claim 9 to claim 12, wherein the pyrolysis is carried in an inert or vacuum atmosphere.
14. Application of the ceramic carbide fiber according to claim 1 to claim 9 as a component of a fiber mat.
15. Application of the ceramic carbide fiber according to claim 1 to claim 9, wherein the fiber is used as a filament component of a lamp .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2009/003371 WO2010130272A1 (en) | 2009-05-12 | 2009-05-12 | Ceramic carbide fiber, method for making the ceramic carbide fiber and application of the ceramic carbide fiber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2009/003371 WO2010130272A1 (en) | 2009-05-12 | 2009-05-12 | Ceramic carbide fiber, method for making the ceramic carbide fiber and application of the ceramic carbide fiber |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010130272A1 true WO2010130272A1 (en) | 2010-11-18 |
Family
ID=41228827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2009/003371 WO2010130272A1 (en) | 2009-05-12 | 2009-05-12 | Ceramic carbide fiber, method for making the ceramic carbide fiber and application of the ceramic carbide fiber |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2010130272A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220228295A1 (en) * | 2020-09-30 | 2022-07-21 | National Technology & Engineering Solutions Of Sandia, Llc | Synthesis of Refractory Transition Metal-Carbide Fibers |
CN115772034A (en) * | 2023-02-13 | 2023-03-10 | 中国人民解放军国防科技大学 | High-entropy carbide ceramic precursor, high-entropy carbide ceramic and preparation method |
EP4119524A4 (en) * | 2020-03-12 | 2023-10-25 | Institute Of Chemistry, Chinese Academy Of Sciences | Carbide-based high-entropy ceramic, rare-earth-containing carbide-based high-entropy ceramic and fibers and precursor thereof, and preparation method therefor |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0257969A2 (en) * | 1986-08-20 | 1988-03-02 | E.I. Du Pont De Nemours And Company | Zirconia-modified alumina fiber |
WO1991016479A1 (en) * | 1990-04-18 | 1991-10-31 | Dennis John Gerard Curran | Ceramic materials |
US5705122A (en) * | 1991-10-30 | 1998-01-06 | Curran; Dennis John Gerard | A method of making a composite ceramic fiber from pre-ceramic polymers |
US6903508B1 (en) * | 1999-08-22 | 2005-06-07 | Ip2H Ag | Light source and method for producing a light source |
-
2009
- 2009-05-12 WO PCT/EP2009/003371 patent/WO2010130272A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0257969A2 (en) * | 1986-08-20 | 1988-03-02 | E.I. Du Pont De Nemours And Company | Zirconia-modified alumina fiber |
WO1991016479A1 (en) * | 1990-04-18 | 1991-10-31 | Dennis John Gerard Curran | Ceramic materials |
US5705122A (en) * | 1991-10-30 | 1998-01-06 | Curran; Dennis John Gerard | A method of making a composite ceramic fiber from pre-ceramic polymers |
US6903508B1 (en) * | 1999-08-22 | 2005-06-07 | Ip2H Ag | Light source and method for producing a light source |
Non-Patent Citations (3)
Title |
---|
KUROKAWA Y ET AL: "Preparation of refractory carbide fibers by thermal decomposition of transition metal (Ti,Zr,Hf,Nb,Ta) alkoxide-cellulose precursor gel fibers", JOURNAL OF MATERIALS RESEARCH MATER. RES. SOC USA, vol. 13, no. 3, March 1998 (1998-03-01), pages 760 - 765, XP002554196, ISSN: 0884-2914 * |
MAOUCHE D ET AL: "Formation and stability of di-transition-metal carbides TixZr1-xC, TixHf1-xC and HfxZr1-xC", COMPUTATIONAL MATERIALS SCIENCE, ELSEVIER, AMSTERDAM, NL, vol. 44, no. 2, 1 December 2008 (2008-12-01), pages 347 - 350, XP025646350, ISSN: 0927-0256, [retrieved on 20080508] * |
ZHIGANG WU, XIAO-JIA CHEN, VIKTOR V. STRUZHKIN, AND RONALD E. COHEN: "Trends in elasticity and electronic structure of transition-metal nitrides and carbides from first principles", PHYSICAL REVIEW B, vol. 71, no. 21, 14 June 2005 (2005-06-14), American Physical Society, pages 214103-1 - 214103-5, XP002554197 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4119524A4 (en) * | 2020-03-12 | 2023-10-25 | Institute Of Chemistry, Chinese Academy Of Sciences | Carbide-based high-entropy ceramic, rare-earth-containing carbide-based high-entropy ceramic and fibers and precursor thereof, and preparation method therefor |
US20220228295A1 (en) * | 2020-09-30 | 2022-07-21 | National Technology & Engineering Solutions Of Sandia, Llc | Synthesis of Refractory Transition Metal-Carbide Fibers |
CN115772034A (en) * | 2023-02-13 | 2023-03-10 | 中国人民解放军国防科技大学 | High-entropy carbide ceramic precursor, high-entropy carbide ceramic and preparation method |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4942011A (en) | Process for preparing silicon carbide fibers | |
US7708805B2 (en) | Method of producing carbon fibers, and methods of making protective clothing and a filter module | |
US9028914B2 (en) | Method for manufacturing high-density fiber reinforced ceramic composite materials | |
KR101031207B1 (en) | Process and composition for the production of carbon fiber and mats | |
JP2011157632A (en) | Opened inorganic fiber bundle for composite material and method for producing the same, and ceramic-based composite material reinforced with the fiber bundle | |
KR20110068293A (en) | Gas sensor using porous nano-fiber containing metal oxide and manufacturing method thereof | |
JP4507138B2 (en) | Method for changing dielectric properties of ceramic matrix composites | |
WO2010130272A1 (en) | Ceramic carbide fiber, method for making the ceramic carbide fiber and application of the ceramic carbide fiber | |
JP7264048B2 (en) | METHOD FOR MANUFACTURING METAL OXIDE FIBER | |
JP7318650B2 (en) | Crystalline silicon carbide fiber, method for producing the same, and ceramic composite substrate | |
JPWO2006085479A1 (en) | Method for producing silicon carbide nanofiber | |
CN112779631A (en) | Flexible silicon carbide fiber and preparation method thereof | |
JP6046266B2 (en) | Polymeric polysilane for producing preceramic molded body and method for producing the same | |
Andreas | Fabrication of large diameter SiC monofilaments by polymer route | |
KR20110068297A (en) | Gas sensor using porous nano-fiber containing electrically conductive carbon material and manufacturing method thereof | |
JPH10158937A (en) | Silicon carbide inorganic fiber and its production | |
CN110629322B (en) | Preparation method of high-purity polycrystalline yttrium aluminum garnet continuous fiber | |
CN110117841B (en) | Method for preparing mullite nanofibers by electrospinning biphase precursors | |
JPH0213045B2 (en) | ||
US4931316A (en) | Preparation of interstitial titanium ceramic fibers | |
KR101684600B1 (en) | Manufacturing method for silicon carbide fiber and silicon carbide fiber thereof | |
JP2523147B2 (en) | Method for producing inorganic fiber | |
Potticary | Chemical and behavioral study of commercial polycarbosilanes for the processing of SiC fibers | |
JP5668550B2 (en) | Inorganic fiber for fiber bundle, inorganic fiber bundle for composite material composed of inorganic fiber for fiber bundle, and ceramic matrix composite material reinforced with fiber bundle | |
CN110528120B (en) | Zirconium carbide nano-fiber and preparation method thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09776605 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 09776605 Country of ref document: EP Kind code of ref document: A1 |