| 摘要 |
PROBLEM TO BE SOLVED: To provide a steel/copper composite material in which the amount of defects existing in copper layers are drastically reduced. SOLUTION: The steel/copper composite material excellent in conductivity and toughness in the lamination direction is provided by a method comprising: a lamination process of laminating a steel sheet having a thickness of 0.05 to 2 mm via a copper plating layer or a copper sheet into a plurality of layers to constitute a steel/copper lamination body in which the copper having the amount corresponding to an average thickness of 0.005 to 1 mm exists between steel sheets adjoining each other; a melting-solidification process of moving such a copper molten belt formed by heating a part of region of the length direction of the lamination body that only the copper is molten in the length direction of the lamination body therein, thereby, filling a space between the steel sheets with molten liquid of copper at the front line in the moving direction of the copper molten belt and solidifying the copper after the filling to produce a planar composite material in which a steel layer and a copper layer are alternately laminated and respective layers are bonded to each other. COPYRIGHT: (C)2011,JPO&INPIT |
