Wire and method for manufacturing wire
AssigneeSumitomo Electric Industries, Ltd.
InventorsTomoharu TAKEYAMA, Yusuke KUREISHI, Akihisa HOSOE
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Abstract
Provided is a wire having a core wire and a coating layer positioned on the outer periphery of the core wire, wherein the core wire consists essentially of aluminum or an aluminum alloy; the coating layer consists essentially of nickel or a nickel alloy; on the core wire, an area ratio of portions not being coated with the coating layer is lower than 0.01%; the wire further has a first element; and the first element is at least one selected from the group consisting of iron, magnesium, silicon, copper, zinc, nickel, manganese, silver, chromium and zirconium.
Claims14
A wire, comprising:
- a core wire;
- and
- a coating layer positioned on an outer periphery of the core wire,
- wherein the core wire consists essentially of aluminum or an aluminum alloy;
- the coating layer consists essentially of nickel or a nickel alloy;
- on the core wire, an area ratio of portions not being coated with the coating layer is lower than 0.01%;
- the wire further comprises a first element;
- and
- the first element is at least one selected from the group consisting of iron, magnesium, silicon, copper, zinc, nickel, manganese, silver, chromium and zirconium.
A method for manufacturing a wire comprising a core wire and a coating layer positioned on an outer periphery of the core wire, the method comprising:
- preparing the core wire consisting essentially of aluminum or an aluminum alloy;
- carrying out degreasing to remove oil content adhered on a surface of the core wire;
- carrying out an etching treatment to remove an oxide film present on a surface of the core wire and containing aluminum oxide as a main component;
- carrying out electroless plating to form a nickel coating on a surface of the core wire having been subjected to the etching treatment;
- forming the coating layer consisting essentially of nickel or a nickel alloy on a surface of the core wire having the nickel coating formed thereon;
- and
- subjecting the core wire having the coating layer formed thereon to wire drawing,
- wherein the wire further comprises a first element;
- the first element is at least one selected from the group consisting of iron, magnesium, silicon, copper, zinc, nickel, manganese, silver, chromium and zirconium;
- and
- a solubility of aluminum oxide to an etching solution to be used for the etching treatment is higher than a solubility of aluminum to the etching solution.
Dependencies are inferred from the claim text.