Sumitomo Precision Products Co., Ltd.

Osaka Prefectural Government

Local Incorporated Administrative Agency Technology

Akiyuki Shimizu

Nobuhito Nakama

Atsushi Kakitsuji

Terumitsu Imanishi

Kazuaki Katagiri

Toyohiro Sato

Katsuhiko Sasaki

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

Growing community of inventors

Hyogo, Japan

Akiyuki Shimizu