Soft copper alloy and soft copper alloy wire or board

Abstract

The present invention provides a bend-resistant conductive material that has both bend resistance and heat resistance and is suitable for distribution lines, vehicle wires, robot wires, and the like. The conductive material is a copper-indium alloy composed of oxygen-free copper with an oxygen content of less than or equal to 10 mass ppm and 0.005-0.6 mass % of indium, or 0.0001-0.003 mass % of phosphorus and 0.01-0.1 mass % of boron are added copper alloy.

Description

technical field [0001] The present invention relates to soft copper alloys and soft copper alloy wires or plates as conductive materials. Background technique [0002] In recent science and technology, all parts such as electric power as a power source and electrical signals use electricity, and wires such as cables and lead wires are used to transmit electricity. As materials used for these wires, metals with high electrical conductivity such as copper and silver are used, and copper wires are mostly used especially from the viewpoint of cost. [0003] All materials called copper are roughly classified according to their molecular arrangement, and can be divided into hard copper and soft copper. In this way copper with the desired properties is used corresponding to the purpose of the application. [0004] For example, rigid hard copper wires cannot be used for cables connecting the driving parts of industrially used robots, automatic working machines, etc., and soft copp...

AI Technical Summary

Problems solved by technology

[0007] For example, heat resistance or mechanical properties can be improved compared to pure copper by adding indium or tin, but excessive addition will lead to a decrease in electrical conductivity

[0008] In addition, if the oxygen content in copper increases, the conductivity and cold workability will decrease, and there will be a problem of disconnection when forming fine lines due to the formation of oxides between oxygen and additive elements.

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