Abstract: The heat conductivity of an aluminum composite material containing a fibrous carbon material is enhanced. In order to realize this, a spark plasma sintered body having a fibrous carbon material compounded in a metal matrix powder of aluminum or the like is fabricated. At the time of fabrication, an aluminum powder serving as a matrix mother material is compounded with an Al alloy powder such as an Al-12Si powder having a melting point lower than the sintering temperature of the mother material. During the process of sintering the aluminum powder, the Al alloy powder is melted, whereby the heat conductivity between the aluminum powder particles and between the aluminum powder particle and the fibrous carbon material is improved.

Abstract: A composite material being excellent in heat conductivity is provided. In order to realize this, a fibrous carbon material made of fine tube form structures constituted with single-layer or multiple-layer graphene is present to form a plurality of layers within a substrate made from a spark plasma sintered body of a metal powder, a mixed powder of a metal and ceramics, or a ceramic powder. The fibrous carbon material constituting each layer is made of a mixture obtained by mixing a small amount of a small diameter fiber 2 having an average diameter of 100 nm or less with a large diameter fiber 1 having an average diameter of 500 nm to 100 ?m.

Abstract: The heat conductivity of an aluminum composite material containing a fibrous carbon material is enhanced. In order to realize this, a spark plasma sintered body having a fibrous carbon material compounded in a metal matrix powder of aluminum or the like is fabricated. At the time of fabrication, an aluminum powder serving as a matrix mother material is compounded with an Al alloy powder such as an Al-12Si powder having a melting point lower than the sintering temperature of the mother material. During the process of sintering the aluminum powder, the Al alloy powder is melted, whereby the heat conductivity between the aluminum powder particles and between the aluminum powder particle and the fibrous carbon material is improved.

Abstract: A composite material being excellent in heat conductivity is provided. In order to realize this, a fibrous carbon material made of fine tube form structures constituted with single-layer or multiple-layer graphene is present to form a plurality of layers within a substrate made from a spark plasma sintered body of a metal powder, a mixed powder of a metal and ceramics, or a ceramic powder. The fibrous carbon material constituting each layer is made of a mixture obtained by mixing a small amount of a small diameter fiber 2 having an average diameter of 100 nm or less with a large diameter fiber 1 having an average diameter of 500 nm to 100 ?m.

Abstract: The present invention has an object of providing a carbon nanotube dispersed composite material utilizing as much as possible excellent electric conductivity, heat conductive property and strength property owned by a carbon nanotube itself and taking advantage of characteristics of ceramics having corrosion resistance and heat resistance such as zirconia and the like, and a method of producing the same; and long-chain carbon nanotubes (including those obtained by previous discharge plasma treatment of only carbon nanotubes) are kneaded and dispersed by a ball mill together with calcinable ceramics and metal powder, and this is integrated by discharge plasma sintering, and carbon nanotubes can be thus dispersed in the form of network in the sintered body, and the electric conductivity property, heat conductive property and strength property of the carbon nanotube can be effectively used together with the properties of the ceramics and metal powder base material.

Abstract: The present invention has an object of providing a carbon nanotube dispersed composite material utilizing as much as possible excellent electric conductivity, heat conductive property and strength property owned by a carbon nanotube itself and taking advantage of features of ceramics having corrosion resistance and heat resistance such as zirconia and the like, and a method of producing the same; and long-chain carbon nanotubes (including also those obtained by previous discharge plasma treatment of only carbon nanotubes) are kneaded and dispersed by a ball mill, planet mill and the like together with calcinable ceramics and metal powder, further, the knead-dispersed material is treated by discharge plasma and this is integrated by sintering by discharge plasma, and carbon nanotubes can be thus dispersed in the form of network in the sintered body, and the electric conductivity property, heat conductive property and strength property of the carbon nanotube can be effectively used together with the properties

Abstract: A primary object of the present invention is to easily and securely fix a photocatalyst to a substrate. According to the invention, there is provided a process for preparing a photocatalyst material, the process comprising a first step of forming an undercoating containing silica gel on a substrate, a second step of bringing titanium tetrachloride into contact with the undercoating and a third step of heat-treating the coated substrate.