Osaka Prefectural Government

Sumitomo Precision Products Co., Ltd.

Other

Local Incorporated Administrative Agency Technology

Atsushi Kakitsuji

Nobuhito Nakama

Terumitsu Imanishi

Kazuaki Katagiri

Akiyuki Shimizu

Toyohiro Sato

Katsuhiko Sasaki

Toshikazu Nosaka

Hiroki Miyamoto

Yasuhiro Hatano

Akira Aoki

Toshiaki Oura

Takeshi Ohara

Tadashi Takatuka

Kei Miyamoto

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.

Highly heat-conductive composite material

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 fiberhaving an average diameter of 100 nm or less with a large diameter fiberhaving an average diameter of 500 nm to 100 &#x3bc;m.

High heat conduction composite material

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.

Method for producing photocatalyst material

Growing community of inventors

Osaka, Japan

Atsushi Kakitsuji