CPC H01B 5/02 (2013.01) [C22C 13/00 (2013.01); C25D 5/12 (2013.01); C25D 7/06 (2013.01)] | 8 Claims |
1. An aluminum base wire comprising:
a core wire made of pure aluminum or an aluminum alloy; and
a coating layer provided on an outer periphery of the core wire,
wherein the coating layer includes
a first layer provided on the outer periphery of the core wire,
a second layer provided on an outer periphery of the first layer, and
a third layer provided on an outer periphery of the second layer,
the first layer is composed of at least one metal selected from the group consisting of nickel, iron, cobalt, chromium, copper, silver, and alloys of these elements,
the second layer is composed of metals that include zinc and tin,
the third layer is composed of at least one metal selected from the group consisting of tin and tin alloys that contain substantially no zinc, and
a zinc content in the second layer is 15 atomic % or more and 60 atomic % or less.
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