Copper alloy conductor, and trolley wire and cable using same, and copper alloy conductor fabrication method

摘要

A copper alloy conductor has a copper alloy material which has a copper parent material with 0.001 to 0.1 wt % (=10 to 1000 wt·ppm) of oxygen and 0.15 to 0.70 wt % (exclusive of 0.15 wt %) of Sn. A crystalline grain to form a crystalline structure of the copper alloy material has an average diameter of 100 μm or less, and 80% or more of an oxide of the Sn is dispersed in a matrix of the crystalline structure as a fine oxide grain with an average diameter of 1 μm or less.

主权项

1. A Cu—Sn alloy conductor, comprising:
a Cu—Sn alloy material consisting of copper, 0.001 to 0.1 wt % of oxygen, 0.15 to 0.70 wt % (exclusive of 0.15 wt %) of Sn, and inevitable impurities, wherein a crystalline grain to form a crystalline structure of the Cu—Sn alloy material has an average diameter of 100 μm or less, and sub-boundaries are formed in the crystalline grain, wherein an oxide of the Sn is crystallized or precipitated in a matrix of the crystalline structure, wherein 80% or more of the oxide of the Sn is dispersed in the matrix of the crystalline structure as a fine oxide grain with an average diameter of 1 um or less, wherein a cross-sectional area of the Cu—Sn alloy conductor is in a range from 110 mm2 to 170 mm2, wherein a tensile strength of the Cu—Sn alloy conductor having the cross-sectional area is 420 MPa or more, and wherein a conductivity of the Cu—Sn alloy conductor having the cross-sectional area is 60% IACS or more.