WO2006027879A1 - 炭素繊維Ti-Al複合材料及びその製造方法 - Google Patents
炭素繊維Ti-Al複合材料及びその製造方法 Download PDFInfo
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- WO2006027879A1 WO2006027879A1 PCT/JP2005/010196 JP2005010196W WO2006027879A1 WO 2006027879 A1 WO2006027879 A1 WO 2006027879A1 JP 2005010196 W JP2005010196 W JP 2005010196W WO 2006027879 A1 WO2006027879 A1 WO 2006027879A1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/14—Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
- C22C49/04—Light metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249924—Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
- Y10T428/249927—Fiber embedded in a metal matrix
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/30—Self-sustaining carbon mass or layer with impregnant or other layer
Definitions
- Carbon fiber Ti-Al composite material and manufacturing method thereof Carbon fiber Ti-Al composite material and manufacturing method thereof
- the present invention relates to a carbon fiber Ti-A1 composite material excellent in heat resistance, high thermal conductivity, wear resistance, strength and elastic modulus, and a method for producing the same.
- a material excellent in heat resistance and wear resistance and lightweight and suitable as a sliding material for a brake it is used as a preform for a ceramic fiber, carbon fiber, or ceramic particle, carbon particle, and metal titanium powder.
- a metal composite material obtained by impregnating aluminum or an aluminum alloy by melt forging is known (for example, see Patent Document 1). Since this metal composite material has hardness and an appropriate coefficient of friction in addition to the above-described characteristics, it has the characteristics required for a sliding material for brakes.
- Patent Document 1 Japanese Patent Laid-Open No. 2003-49252
- the object of the present invention is to have hardness, heat resistance, wear resistance, light weight, strength, elastic modulus, improved thermal conductivity, and uniform quality. It is a carbon fiber Ti A1 composite material with excellent properties, and it is intended to provide materials suitable for brake sliding materials, engine parts, robot arms, etc.
- the present inventors have made extensive studies, and as a result, impregnated with aluminum powder or the like by molten metal forging into a compact containing a mixture of titanium powder and reinforcing fibers.
- the above-mentioned problems can be solved by using fine carbon fibers and long carbon fibers having specific physical properties as the reinforcing fibers, and the fine carbon fibers and The present inventors have found that a greater effect can be obtained by coating the surface of Z or carbon long fiber with a thermosetting resin such as phenol resin.
- the present invention is characterized by the following gist.
- Fine carbon fiber having a fiber diameter of 0.5 to 500 nm and a fiber length of 1000 m or less and having a central axis having a hollow structure; a carbon fiber having a fiber diameter of 5 to 15; ⁇ ⁇ ; and titanium powder or Carbon fiber Ti A1 composite material, characterized in that it is a composite material obtained by press-impregnating aluminum or an aluminum alloy by molten metal forging into a compact containing titanium oxide powder
- the fine carbon fiber and the Z or long carbon fiber are 1 to 40 per 100 parts by weight of the fiber.
- Fine carbon fiber having a fiber diameter of 0.5 to 500 nm, a fiber length of 1000 m or less, and a central axis having a hollow structure, a carbon diameter fiber of 5 to 15; ⁇ ; ⁇ , and titanium powder
- a compact is formed by mixing with titanium oxide powder, and the compact is preheated in an inert atmosphere and then placed in a pressure mold, and a molten metal of aluminum or an aluminum alloy is added to the compact at 20 MPa or more.
- a method for producing a carbon fiber Ti A1 composite material characterized by impregnating with molten metal forging at a pressure of 5 ° C.
- the carbon fiber Ti A1 composite material of the present invention forms a compact by mixing titanium or titanium oxide with fine carbon fibers and carbon long fibers having specific physical properties, and aluminum is formed on the compact.
- the aluminum alloy is pressure impregnated by melt forging, a composite material having desired hardness, heat resistance, wear resistance and improved lightness, strength, elastic modulus and thermal conductivity is obtained. Can do.
- the mixing property of titanium or titanium oxide and the wettability with aluminum or aluminum alloy can be improved. Therefore, it is possible to promote uniform mixing of titanium or titanium oxide and smooth impregnation of aluminum or aluminum alloy, thereby improving workability and excellent strength and quality uniformity.
- a composite material can be obtained.
- the carbon fiber Ti—Al composite material has the above-described configuration, a reinforcing effect is obtained particularly by a synergistic combination of fine carbon fibers and long carbon fibers, and the structure configuration is dense and uniform. Since it is a composite material, it is difficult to cause cracks and chipping of the material when manufacturing and processing products using this material. As a result, the reliability of the product is improved, calorie is facilitated, and a product with high processing accuracy can be obtained.
- FIG. 1 is a schematic cross-sectional explanatory view showing an example of a molten metal forging device of the present invention.
- FIG. 2 is a schematic cross-sectional explanatory diagram of a closed do mold type melt forging device.
- the fine carbon fiber used in the present invention has a fiber diameter of 0.5 to 500 nm or less, a fiber length of 1 OOO / zm or less, preferably an aspect ratio of 3 to: preferably a carbon hexagonal network surface.
- a fine carbon fiber having a multi-layer structure in which powerful cylinders are concentrically arranged and whose central axis is a hollow structure is used. This fine carbon fiber is significantly different from the conventional carbon fiber not only in fiber diameter but also in fiber length. As a result, it is excellent in terms of physical properties such as conductivity, thermal conductivity, and slidability.
- the fiber diameter is smaller than 0.5 nm, the resulting composite material has insufficient strength. If it is larger than 500 nm, the mechanical strength, thermal conductivity, sliding Sexuality, etc. will decrease. In addition, when the fiber length is longer than 1000 m, the fine carbon fibers are difficult to disperse uniformly in a matrix such as aluminum or aluminum alloy (hereinafter referred to as aluminum metal). As a result, the mechanical strength of the resulting composite material decreases.
- the fine carbon fibers used in the present invention are those having a fiber diameter of 10 to 200 nm, a fiber length of 3 to 300 ⁇ m, and preferably an aspect ratio of 3 to 500. preferable. In the present invention, the fiber diameter or fiber length of the fine carbon fiber can be measured with an electron microscope.
- a preferred fine carbon fiber used in the present invention is a carbon nanotube.
- This carbon nanotube is also called a graphite whisker, filamentous carbon, carbon fiber, etc., and is a single-walled carbon nanotube having a single graphite film forming a tube, and a multilayered carbon nanotube having a multilayer structure. Any of them can be used in the present invention.
- multi-walled carbon nanotubes are preferable because they provide a high mechanical strength and are advantageous in terms of economy.
- Carbon nanotubes are produced by, for example, an arc discharge method, a laser evaporation method, and a thermal decomposition method as described in "Basics of Carbon Nanotubes" (issued by Corona, pages 23 to 57, issued in 1998).
- the carbon nanotube preferably has a fiber diameter of 0.5 to 500 nm, a fiber length of 1 to 500 111, and an aspect ratio of 3 to 500.
- Particularly preferred fine carbon fibers in the present invention are vapor grown carbon fibers having a relatively large fiber diameter and fiber length among the carbon nanotubes.
- a vapor grown carbon fiber is also called VGCF (Vapor Grown Carbon Fiber), and as described in JP-A-2003-176327, a gas such as a hydrocarbon is present in the presence of an organic transition metal catalyst. It is manufactured by vapor phase pyrolysis with hydrogen gas.
- This vapor grown carbon fiber (VGCF) has a fiber diameter of preferably 50 to 300 nm, a fiber length of preferably 3 to 300 m, and a fast petrol ratio of preferably 3 to 500. This VGCF is excellent in terms of ease of manufacture and handling.
- the fine carbon fiber used in the present invention is preferably heat-treated in a non-oxidizing atmosphere at a temperature of 2300 ° C or higher, preferably 2500 to 3500 ° C.
- the mechanical strength and chemical stability are greatly improved, contributing to the light weight of the resulting composite material.
- As the non-oxidizing atmosphere argon, helium, and nitrogen gas are preferably used.
- a boron compound such as boron carbide, boron oxide, boric acid, borate, boron nitride, or organic boron compound coexists, the heat treatment effect is further improved and the heat treatment temperature is lowered. And can be advantageously implemented.
- This boron compound has a boron content in the heat-treated fine carbon fiber of 0.01 to: L0 mass%, preferably 0.1. It is preferable to be present to be ⁇ 5% by mass.
- the carbon long fibers used together with the fine carbon fibers may be any of PAN-based, pitch-based, and other carbon fibers, but have a diameter of 5 to 15 ⁇ m, preferably 7
- the length of ⁇ 12 m is suitable, and the length may be in the form of a long continuous fiber.
- the fiber length is preferably Is from 0.1 to LOmm, particularly preferably from 1 to 5 mm.
- pitch-based carbon fibers having high thermal conductivity, particularly high-performance mesophase pitch-based carbon fibers are preferable.
- the composite material of the present invention has the advantage that the mechanical properties of the composite material, in particular the strength and elastic modulus, can be improved by containing carbon long fibers. Since the amount used can be reduced, it is advantageous in terms of cost.
- the composite material of the present invention can contain carbonaceous powder as necessary, in addition to the fine carbon fibers and long carbon fibers described above, as a carbon material.
- carbonaceous powder By containing the carbonaceous powder, there is an advantage that the thermal conductivity can be improved, and furthermore, the amount of expensive fine carbon fiber used can be reduced, which is advantageous in terms of cost.
- Carbon fiber Ti-Al composite material is produced by pressure impregnation of molten metal (hereinafter also referred to as molten metal) by melt forging.
- the titanium powder is preferably a reactive power of aluminum and titanium.
- the particle size of the titanium powder is preferably an average particle size of 1 to 150 m. Titanium powder having a particle size in this range can be easily mixed into fine carbon fibers and long carbon fibers, and can react with aluminum metal to promote the formation of A1-Ti intermetallic compounds.
- Si is often used as the metal that forms aluminum alloys, even among the forces that can be cited such as Mg, Si, and Cu. Titanium or titanium oxide powder can be used alone or in combination, and aluminum and an aluminum alloy can also be used together as an aluminum metal.
- the molded body containing the fine carbon fiber and the long carbon fiber is obtained by mixing a predetermined amount of titanium powder with the fine carbon fiber and the long carbon fiber, preferably PVA (polybulal alcohol), epoxy resin, furan.
- a binder (binder) such as rosin or phenolic rosin is appropriately mixed, and the mixture is obtained by pressure molding into a predetermined shape with a molding die.
- the molded body is dried as necessary.
- the shape of the molded body varies depending on the application and is not limited, and an appropriate shape such as a plate shape, a disk shape, a prism shape, a circular column shape, a cylindrical shape, a rectangular tube shape, a spherical shape, etc. is adopted.
- a plate-like body that is easy to mold and versatile is used.
- a disc-like material having a thickness of preferably 2 to 100 mm, more preferably 3 to 50 mm is preferable.
- the compact preferably has a density of about 2.4 to 3.5 gZcm 3 .
- the fine carbon fiber and Z or long carbon fiber may be used as they are, but it is preferable to use a surface coated with a thermosetting resin such as phenol resin. Masashi.
- a thermosetting resin such as phenol resin.
- For fine carbon fiber and Z or long carbon fiber with thermosetting resin coated on the surface use pre-manufactured thermosetting resin powder and leave the resin powder as it is or with a solvent such as alcohol or acetone. It can be produced by diluting the mixture, mixing it with fine carbon fibers and z or carbon long fibers, kneading with a kneader, etc., extruding the kneaded product, drying and grinding.
- the fiber coated with the thermosetting resin thus obtained has a coating amount of about 30 to 50% by mass of the thermosetting resin based on the carbon fiber.
- the amount of thermosetting resin increases, the amount of carbon fiber decreases relatively, so that mechanical strength, conductivity, thermal conductivity, and the like are lowered.
- thermosetting resin is phenol resin
- the raw materials, phenols and aldehydes are present in the presence of the catalyst.
- phenol resin can be coated very thinly and uniformly on the surface of carbon fibers.
- the powerful reaction coating method it is possible to easily obtain fine carbon fibers and Z or carbon long fibers having a coating amount of 0% by mass or less, and further 25% by mass or less of the thermosetting resin.
- the phenols used in the formation of the phenol resin used in the reaction coating method include, for example, phenol, catechol, tannin, resorcin, hydroquinone, pyrogallo, and the like. Usual phenols such as ru can be used. Among them, it is preferable to use a hydrophobic material that is hardly soluble in water. These hydrophobic phenols have water solubility at room temperature.
- solubility in water is defined by the number of grams dissolved in water lOOg, and the solubility in water of 5 or less is saturated when dissolved in water lOOg or less. Means that. A lower solubility is desirable.
- hydrophobic phenols examples include o-cresol, m-cresol, p-cresol, p-t-butylphenol, 4-tert-butylcatechol, m-phenenolephenol, p-phenolphenol, p — ( ⁇ -Tamil) phenol, ⁇ -norphenol, guaiacol, bisphenol, ⁇ , bisphenol, S, bisphenol, F, o black mouth, p black mouth, 2, 4 dichlorophenol, o phenol, 3 , 5-xylenol, 2,3 xylenol, 2,5 xylenol, 2,6 xylenol, 3,4 xylenol, p-octylphenol, etc.
- 5% by mass or more is preferably a hydrophobic phenol.
- aldehydes used as the raw material for the above-mentioned phenolic rosin it is possible to use those having a form such as trioxane, tetraoxane, paraformaldehyde, etc., which is optimal for formalin in the form of an aqueous formaldehyde solution. It is also possible to replace part or most of formaldehyde with furfural or furfuryl alcohol.
- alkali metal oxides such as sodium, potassium and lithium, oxides and hydroxides, carbonates, calcium, magnesium, barium and the like are used. It is preferable to use oxides, hydroxides, carbonates, and tertiary amines. One of these can be used alone, or two or more can be used in combination. Specific examples include sodium hydroxide, potassium hydroxide, lithium hydroxide, sodium carbonate, calcium hydroxide, magnesium hydroxide, barium hydroxide, calcium carbonate, magnesium oxide, calcium oxide, trimethyla. Min, Trietylamine, Tri Ethanolamine, 1,8-diazabicyclo [5,4,0] undecene.
- phenols, aldehydes and a reaction catalyst are taken in a reaction vessel, and further, fine carbon fibers and Z or Add other ingredients as needed and react phenols and aldehydes in the presence of them.
- This reaction is preferably carried out with stirring in an amount of water sufficient to stir the reaction system.
- the reaction system is viscous and flows with stirring.
- the condensation reaction product of phenols and aldehydes containing carbon fiber begins to separate from the water in the system, and the composite particles in which the phenol resin and carbon fiber produced are aggregated throughout the reaction vessel. It becomes a distributed state.
- thermosetting resin such as phenol resin manufactured as described above
- the coating amount of the thermosetting resin should be 1 to 40 parts by weight per 100 parts by weight of fine carbon fiber and Z or carbon long fiber. If the coating amount is larger than 40 parts by weight, the amount of fibers decreases, resulting in low strength. On the other hand, if it is smaller than 1 part by weight, a uniform molded product cannot be produced, which is not preferable.
- a powder of aluminum metal impregnated in a later step is mixed in advance with fine carbon fiber and z or carbon long fiber, It is preferable to form the mixture, which significantly improves the metal impregnation in molten forging.
- the mixed amount of the aluminum metal powder is preferably about 10 to 50 parts by weight per 100 parts by weight of the total amount of the fine carbon fiber and Z or carbon long fiber.
- the average particle diameter of the aluminum metal powder is preferably 1 to 150 / ⁇ ⁇ .
- the strong compact is placed in a pressure mold and brought into contact with molten aluminum metal under pressure, so that the compact is poured by molten forging to impregnate the aluminum metal with pressure.
- the molded body was placed in the mold. Thereafter, it is preheated with the mold, preferably under an inert atmosphere.
- the inert atmosphere argon gas, nitrogen gas, etc., which can be used, argon gas can be preferably used.
- the preheating is performed by maintaining the melting point of the aluminum metal or above the melting point, specifically, maintaining at 100 ° C. or more, more preferably 100 to 250 ° C. from the melting point.
- step (1) aluminum fluid is retained in the pores of the porous molded body while maintaining the fluidity of the aluminum metal and suppressing the reaction at the interface between the fine carbon fiber or long carbon fiber and the metal. -Uniform impregnation of um metal.
- the aluminum metal is preferably 100 to 150 ° C higher than its melting point!
- the molten metal is melted at a soot temperature, and the molten metal is supplied to a mold and brought into contact with the preliminarily heated molded body. Is impregnated under pressure.
- the magnitude of this pressurization is lOMPa or more, preferably 20 to: LOOMPa.
- step (2) when the temperature of the molten metal exceeds 150 ° C from the melting point, it becomes easy to produce deliquescent aluminum carbide, and a practical composite material cannot be obtained.
- the pressure is lOMPa
- the metal component is not impregnated efficiently, and the metal filling rate may be reduced.
- FIG. 1 shows a schematic cross section of the device.
- 1 is a die
- 2 is a pusher (punch)
- 3 is a press machine.
- this apparatus comprises a mold 1 having a space inside and a pusher 2.
- the pusher 2 is in close contact with the inner wall surface of the opening of the mold 1, and the opening of the mold 1 is It can be moved inward and outward, and can be moved inward by the press 3.
- Molded body 4 is placed in mold 1 and preheated in argon gas, then molten metal 5 heated to a predetermined temperature is supplied, and molten metal 5 inside the mold is pressurized by pusher 2 Keep in this state for hours. After a predetermined time has elapsed, the solidified body is taken out from the mold 1 together with the lump of aluminum metal, and the aluminum metal portion is removed by cutting, melting or other methods to obtain a carbon fiber Ti A1 composite material.
- the open mold method (direct pressure method) of Fig. 1 is used.
- the closed-mold method (indirect pressurization method) shown in Fig. 2 can also be applied.
- the volume content of the fine carbon fibers contained is preferably 20 to 70% by volume, more preferably 30 to 60% by volume. It is. If this volume content is less than 20% by volume, low physical properties (strength, heat) are obtained. Conversely, if it is more than 70% by volume, uniform impregnation becomes difficult, which is not preferable.
- the volume content of the long carbon fiber is preferably 0.5 to 50% by volume, more preferably 5 to 50% by volume. If the volume content is less than 0.5% by volume, the effect of improving the strength and elastic modulus is not achieved.
- the volume content is more than 50% by volume, the Ti-Al component is relatively reduced, so that the fiber It is not preferable because the strength between the two decreases.
- the volume content is the percentage of the volume of each material component in the carbon fiber Ti—Al composite material.
- the volume content of the titanium powder or titanium oxide powder constituting the molded body is preferably 15 to 50% by volume, preferably 20 to 40% by volume. More preferably.
- the compact is impregnated with aluminum metal, some titanium reacts with aluminum metal to form an A1-Ti intermetallic compound.
- this A1-Ti intermetallic compound heat resistance and hardness are increased, and an appropriate friction coefficient and its stability can be obtained. If this content is less than 15% by volume, the heat resistance will be insufficient, and if it exceeds 50% by volume, most of the aluminum metal will form an Al-Ti intermetallic compound, and the toughness of the resulting composite material will be reduced. It is preferable because it decreases significantly.
- the carbon fiber Ti—Al composite material obtained by melt forging can improve strength and hardness when heat-treated at 550 ° C. or higher as described in Patent Document 1. it can.
- the conditions for this heat treatment are preferably in the range of about 10 to 100 ° C. below the melting point of the aluminum metal, and the heat treatment time is preferably 0.5 to 24 hours.
- the carbon fiber Ti-Al composite material of the present invention has high thermal conductivity, large hardness / hardness and strength, it is particularly suitably used as a sliding material for brakes.
- the thermal conductivity is 5 OW / (m'K) or more, and the strength is 100 to 300 MPa, so that the problem with the conventional brake sliding material is solved.
- the carbon fiber Ti-Al composite material of the present invention is particularly suitable for a brake sliding material.
- it can be used as a material in a wide range of fields such as engine parts, machine tool surface plates, turbine blades, and robot arms.
- Thermal conductivity Obtained as the product of thermal diffusivity, specific heat and density.
- the thermal diffusivity was measured at 25 ° C using a TC-7000 manufactured by Vacuum Riko Co., Ltd. by a laser flash method.
- ruby laser light excitation voltage 2.5 kv, uniform filter and one extinction filter was used as irradiation light.
- Thermal expansion coefficient The thermal expansion coefficient from room temperature to 300 ° C was measured using a thermal analyzer 001, TD-5020 manufactured by Max Science.
- Vapor-grown carbon fiber with a fiber diameter of 150 nm, fiber length of 15 ⁇ m, and aspect ratio of 100 is treated in argon gas atmosphere at a temperature of 2800 ° C for 30 minutes, 50 parts by weight of fine carbon fiber, carbon long fiber (Japan graph) 20 parts by weight, XN—80 fiber diameter 10 ⁇ m, fiber length 3 mm), 50 parts by weight of titanium powder (average particle size 100 ⁇ m) and phenol resin (trade name: manufactured by Rignite) LA-100P) Prepare a mixture of 16 parts by weight, and use this mixture to form a plate-shaped body (length 125 mm, width 105 mm, thickness 12 mm) using a hot plate press at 160 ° C and 20 MPa. Manufactured.
- This molded body was preheated to 760 ° C in argon gas and placed in a mold preheated to 500 ° C. Then, aluminum melted at 810 ° C was placed in the mold and passed through a pusher. Pressure in press machine Pressurize to 500kgZcm 2 (about 49MPa), and cast the aluminum
- This carbon fiber Ti—A1 composite material had a density of 2.5 gZcm 3 , a thermal conductivity of 80 WZmK, a linear expansion coefficient of 10 ⁇ 10 ”V ° C., an elastic modulus of 130 GPa, and a bending strength of 250 MPa.
- Example 2 Example using fine carbon fiber coated with phenolic resin and carbon long fiber
- Example 1 As the fine carbon fiber in Example 1, the same procedure as in Example 1 was carried out except that a fine carbon fiber coated with phenol resin prepared as follows was used.
- 1835 is a fine carbon fiber graphitized by heat treatment of gas phase carbon fiber having a fiber diameter of 150 nm, fiber length of 15 ⁇ m, and aspect ratio of 30 in an argon gas atmosphere at a temperature of 2800 ° C for 30 minutes. 1 part by weight and 1500 parts by weight of water were charged (hydrophobic bisphenol A is 5% by weight in phenols). It took 60 minutes with stirring and mixing, and the temperature was raised to 90 ° C and the reaction was carried out for 4 hours.
- the contents of the reaction vessel were filtered off with a Nucci soot to obtain a phenol resin-coated fine carbon fiber having a moisture content of 22% by weight.
- the carbon fiber Ti A1 composite material according to the present invention has hardness, heat resistance, wear resistance, improved lightness, strength and thermal conductivity, and excellent quality uniformity. It is suitable as a material for sliding materials for brakes, engine parts, robot arms, etc.
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Abstract
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Priority Applications (2)
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US11/574,767 US7749597B2 (en) | 2004-09-06 | 2005-06-02 | Carbon fiber Ti-Al composite material and process for producing the same |
JP2006535041A JP4019123B2 (ja) | 2004-09-06 | 2005-06-02 | 炭素繊維Ti−Al複合材料及びその製造方法 |
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JP2004-258749 | 2004-09-06 | ||
JP2004258749 | 2004-09-06 |
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Cited By (3)
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WO2007063764A1 (ja) * | 2005-11-30 | 2007-06-07 | Shimane Prefectural Government | ミクロンサイズおよびナノサイズの炭素繊維を共含有する金属基複合材料 |
JP2008069036A (ja) * | 2006-09-14 | 2008-03-27 | Yokohama National Univ | 導電性窒化ケイ素焼結体とその製造方法 |
JP2009094377A (ja) * | 2007-10-11 | 2009-04-30 | Nissan Motor Co Ltd | 電子部品用セラミックス基板及びその製造方法 |
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US7563502B2 (en) * | 2004-07-06 | 2009-07-21 | Mitsubishi Corporation | Fine carbon fiber-metal composite material and method for production thereof |
WO2006027879A1 (ja) * | 2004-09-06 | 2006-03-16 | Mitsubishi Corporation | 炭素繊維Ti-Al複合材料及びその製造方法 |
JP3948740B2 (ja) * | 2005-01-18 | 2007-07-25 | 住友ベークライト株式会社 | マンドレル、マンドレルを用いた樹脂フィルムの製造装置及び製造方法 |
DE102013225939A1 (de) * | 2013-12-13 | 2015-06-18 | Schunk Kohlenstofftechnik Gmbh | Verfahren zur Herstellung eines Verbundbauteils |
US9470284B2 (en) * | 2014-10-23 | 2016-10-18 | Shimano Inc. | Friction member for bicycle brake |
CN110788297A (zh) * | 2018-08-02 | 2020-02-14 | 山东鲁电线路器材有限公司 | 一种高强度铝合金悬垂线夹的生产方法 |
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JP2003049252A (ja) * | 2001-08-06 | 2003-02-21 | Touichi Kuribayashi | 金属複合体及びその製造方法 |
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JP4002294B2 (ja) * | 2004-07-06 | 2007-10-31 | 三菱商事株式会社 | 炭素繊維Ti−Al複合材料及びその製造方法。 |
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JP2003049252A (ja) * | 2001-08-06 | 2003-02-21 | Touichi Kuribayashi | 金属複合体及びその製造方法 |
JP2004136363A (ja) * | 2002-08-22 | 2004-05-13 | Nissei Plastics Ind Co | カーボンナノ材と低融点金属材料の複合成形方法及び複合金属製品 |
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WO2007063764A1 (ja) * | 2005-11-30 | 2007-06-07 | Shimane Prefectural Government | ミクロンサイズおよびナノサイズの炭素繊維を共含有する金属基複合材料 |
US8206815B2 (en) | 2005-11-30 | 2012-06-26 | Shimane Prefectural Government | Metal-based composite material containing both micron-size carbon fiber and nano-size carbon fiber |
JP2008069036A (ja) * | 2006-09-14 | 2008-03-27 | Yokohama National Univ | 導電性窒化ケイ素焼結体とその製造方法 |
JP2009094377A (ja) * | 2007-10-11 | 2009-04-30 | Nissan Motor Co Ltd | 電子部品用セラミックス基板及びその製造方法 |
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JP4019123B2 (ja) | 2007-12-12 |
US7749597B2 (en) | 2010-07-06 |
US20080003426A1 (en) | 2008-01-03 |
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