| 摘要 |
To produce an aluminum wire covered with copper, capable of retaining its original electrical and mechanical properties when used in environments in which the temperatures exceed 150° C., the wire is produced by a method during which a material foreign to copper and to aluminum is introduced in a small amount at the interface between the aluminum core and the copper layer. The material has the effect of retarding the precipitation of copper in the aluminum and the growth of Guinier-Preston zones. The wire is produced by a known method of reducing the diameter of a composite bar and the foreign material is introduced into the interface between the copper and the aluminum during production of the composite bar so as to be present in trace amounts after reduction of the diameter.
|
