Kumamoto University

Dyden Corporation

Fukuoka Prefectural Government

Masayuki Tsushida

Daisuke Matsunaga

Fumiyo Annou

Hiromoto Kitahara

Shinji Ando

Hiroyuki In

Toshifumi Ogawa

An aluminium-based conductive material used in a driving part of robots or various devices and used, for example, in a wiring that is loaded with cyclic bending, as well as an electric wire and a cable using the same, contains 0.1 to 1.0 mass % of scandium and further contains, as a rest part, aluminium and unavoidable impure substances and is formed of a metal texturehaving crystal grainswith an average grain size of 2 &#x3bc;m or less and aluminium-scandium series nanoprecipitates generated in a grain boundaryof the crystal grains. Further, it is preferable that the metal texturecontains the crystal grainsof 1 &#x3bc;m or less at a cross sectional ratio of 15% or more.

Aluminum-based conductive material and electric wire and cable using the same

A composite conductor, including an internal layerhaving a conductive material A, the conductive material A having fatigue strength of at least 150 MPa after being subjected to 10cycles of cyclic loading in a fatigue test, and an external layerhaving a conductive material B, the external layer coating the internal layer, the conductive material B having tensile strength higher than that of the conductive material A, the tensile strength being at least 250 MPa, in which the composite conductorhas fracture resistance to a sudden load and impact as well as bending durability.

Composite conductor and electric wire using the same

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Kumamoto, Japan

Masayuki Tsushida