摘要:
PROBLEM TO BE SOLVED: To provide a carbon fiber structure-containing preform in which a metal matrix composite material has excellent thermal conductivity, to provide a method for producing the same, to provide a metal matrix composite material using the same, and to provide a method for producing the same. SOLUTION: Disclosed is a carbon fiber structure-containing preform produced by a production method for a carbon fiber structure-containing preform comprising: a stage (1) where a carbon fiber structure, an organic binder and a dispersion medium are mixed, so as to obtain a suspension; a stage (2) where the suspension is dried, so as to obtain a mixture; a stage (3) where the mixture is subjected to compression molding, so as to obtain a compression-molded body; a stage (4) where the compression-molded body is subjected to hardening treatment, so as to obtain a hardened compression-molded body; and a stage (5) where the hardened compression-molded body is fired, so as to obtain a carbon fiber structure-containing preform. Also disclosed is a metal matrix composite material obtained by impregnating the carbon fiber structure-containing preform with a melted matrix metal, and solidifying the same. COPYRIGHT: (C)2008,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a metal matrix composite having excellent thermal conductivity and particularly a light metal matrix composite to which light metals including aluminum and magnesium are applied as a metal matrix and also to provide its manufacturing method. SOLUTION: The metal matrix composite comprises a metal matrix and a reinforcement and contains, as the reinforcement, carbon nanotubes and short ceramic fibers. The method for manufacturing the metal matrix composite is also provided. The reinforcement is fixed and shaped with an inorganic binder into a preform of ≥0.5 MPa buckling strength, and then the molten matrix metal is impregnated into the preform under pressure, followed by solidification. COPYRIGHT: (C)2007,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a metal-matrix carbon fiber composite material having high strength and its manufacturing method. SOLUTION: The metal-matrix carbon fiber composite material can be manufactured by a manufacturing method of metal-matrix carbon fiber composite material comprising the steps of: mixing a carbon fiber structure in a three-dimensional network form constituted of multilayer carbon nanotubes which project in a plurality of numbers from a granular part to be an origin of growth in a growth process and are bonded to each other, a binder and a dispersion medium to prepare a suspension; drying the suspension to prepare a mixture; pressing the mixture to prepare a pressed body; applying hardening treatment to the pressed body to prepare a hardened pressed body; subjecting the hardened pressed body, which contains the carbon fiber structure where I D /I G measured by a Raman spectroscopic analysis method ranges from >0.2 to 1.2, to firing under the temperature condition of 800 to 1,500°C to prepare a preform containing the carbon fiber structure; impregnating the preform containing the carbon fiber structure with a molten matrix metal and carrying out solidification to obtain the metal-matrix carbon fiber composite material. COPYRIGHT: (C)2009,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a ceramic substrate for electronic components, which reduces a coefficient of thermal expansion and reduces thermal stress at an interface between a wiring layer and the ceramic substrate, while assuring thermal conductivity and electric conductivity both required for the wiring layer, and to provide a method for manufacturing the same. SOLUTION: The ceramic substrate 1 for electronic components includes a ceramic substrate 10 and a wiring layer 20 arranged on a surface of the ceramic substrate 10. The wiring layer 20 is composed of a complex material containing granular carbon phase 23, fine carbon fiber 22 and electric conductive base material 21. A carbon nanotube 22 and the granular carbon phase 23 are joined to form a three dimensional network-like structure. In the wiring layer 20, as shown by an arrow sign (a), heat and current form continuous paths in a thickness direction T of the wiring layer 20. COPYRIGHT: (C)2009,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a carbon fiber structure-containing preform in which a metal matrix composite material has excellent thermal conductivity, to provide a method for producing the same, to provide a metal matrix composite material using the same, and to provide a method for producing the same. SOLUTION: Disclosed is a carbon fiber structure-containing preform produced by a production method for a carbon fiber structure-containing preform comprising: a stage (1) where a carbon fiber structure, an organic binder and a dispersion medium are mixed, so as to obtain a suspension; a stage (2) where the suspension is dried, so as to obtain a mixture; a stage (3) where the mixture is subjected to compression molding, so as to obtain a compression-molded body; a stage (4) where the compression-molded body is subjected to hardening treatment, so as to obtain a hardened compression-molded body; and a stage (5) where the hardened compression-molded body is fired, so as to obtain a carbon fiber structure-containing preform. Also disclosed is a metal matrix composite material obtained by impregnating the carbon fiber structure-containing preform with a melted matrix metal, and solidifying the same. COPYRIGHT: (C)2008,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a method for manufacturing fiber reinforced metal, which method can manufacture a composite material at a required portion even when the density of a reinforcing fiber preform is lower than that of molten metal, and further to provide a fiber reinforced metal material manufactured by the same method. SOLUTION: When the fiber reinforced metal is manufactured by casting, a jig-integrated type preform 11 is manufactured by joining a positioning jig 14 made of metal or ceramic having a melting point higher than the temperature of molten metal to a network shape inclination-preventing metallic basket 13 having reinforcing fiber preforms 12 therein. After preheating the jig-integrated type preform 11, the molten metal of a matrix metal is poured in a state that the jig-integrated type preform 11 is arranged in a metallic die. COPYRIGHT: (C)2008,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a ceramic substrate for electronic components, which reduces a coefficient of thermal expansion and reduces thermal stress at an interface between a wiring layer and the ceramic substrate, while assuring thermal conductivity and electric conductivity both required for the wiring layer, and to provide a method for manufacturing the same. SOLUTION: The ceramic substrate 1 for electronic components includes a ceramic substrate 10 and a wiring layer 20 arranged on a surface of the ceramic substrate 10. The wiring layer 20 is composed of a complex material containing granular carbon phase 23, fine carbon fiber 22 and electric conductive base material 21. A carbon nanotube 22 and the granular carbon phase 23 are joined to form a three dimensional network-like structure. In the wiring layer 20, as shown by an arrow sign (a), heat and current form continuous paths in a thickness direction T of the wiring layer 20. COPYRIGHT: (C)2009,JPO&INPIT