Copper foil having glossy surface with excellent oxidation resistance and method of manufacturing the same
AssigneeNikko Materials Co., Ltd.
InventorsHideta Arai, Kazuhiko Sakaguchi
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Abstract
To establish a technique of further improving the oxidation resistance of the glossy surface of a copper foil that has a composite layer containing chromium, zinc, and phosphorus on its glossy surface is achieved by a copper foil having excellent oxidation resistance characterized by a composite layer containing chromium, zinc, phosphorus, and nickel formed on the glossy surface of the foil and also to a method of manufacturing the same by electrolysis.
Claims5
A copper foil having a glossy surface with excellent oxidation resistance characterized by a composite layer containing chromium, zinc, phosphorus, and nickel formed on the glossy copper foil surface.
A copper foil having a glossy surface with excellent oxidation resistance characterized by a composite layer containing chromium, zinc, phosphorus, and nickel formed, through an intermediate layer of a material selected from the group consisting of zinc, nickel, chromium, tin, and alloys thereof, on the glossy copper foil surface.
A method of manufacturing a copper foil having a glossy surface with excellent oxidation resistance characterized by an anti-corrosive treatment of the glossy copper foil surface with a bath of a composition comprising
- Cr:
- 0.1-2.0 g/L
- Zn:
- 0.1-3.0 ″
- P:
- 0.01-1.0 ″
- Ni:
- 0.1-0.5 ″,
- whereby a composite layer containing chromium, zinc, phosphorus, and nickel is formed on the glossy copper foil surface.
Dependencies are inferred from the claim text.