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US 9,049,795 B2Granted
Rolled copper or copper-alloy foil provided with roughened surface
AssigneeJX Nippon Mining & Metals Corporation
InventorsHideta Arai, Atsushi Miki
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AssigneeJX Nippon Mining & Metals Corporation
InventorsHideta Arai, Atsushi Miki
Estimating the term…
Provided is a rolled copper or copper-alloy foil having a roughened surface, the rolled copper or copper-alloy foil subjected to roughening treatment with copper fine grains wherein a copper base plating layer is provided between the copper roughened layer and the rolled copper or copper-alloy foil. An object of the present invention is to provide a roughened rolled copper-alloy foil having fewer craters, the presence of which is a serious disadvantage unique to a rolled copper-alloy foil having a roughened surface. In particular, provided is a rolled copper or copper-alloy foil in which the development of craters caused by inclusions present in or near a surface of the base material can be controlled.
A rolled copper or copper-alloy foil provided with a roughened surface, the rolled copper or copper-alloy foil subjected to roughening treatment with copper fine grains wherein a copper base plating layer is provided between the copper roughened layer and the rolled copper or rolled copper-alloy foil, the copper base plating layer having a thickness of 0.15 to 0.30 μm.
A rolled copper or copper-alloy foil provided with a roughened surface, the rolled copper or copper-alloy foil subjected to roughening treatment with copper fine grains wherein a copper base plating layer is provided between a first copper roughened layer of the copper fine grains and the rolled copper or rolled copper-alloy foil, and wherein a second roughened layer comprising Co—Ni—Cu fine grains of a size of 0.05 to 0.25 μm is further provided on the first copper roughened layer of the copper fine grains.
A rolled copper or copper-alloy foil provided with a roughened surface, the rolled copper or copper-alloy foil subjected to roughening treatment with copper fine grains wherein a copper base plating layer is provided between a copper roughened layer of the copper fine grains and the rolled copper or rolled copper-alloy foil, and the roughened surface having 4.2 craters or less per 25 mm2.
Dependencies are inferred from the claim text.