Zinc foil and method for producing the same
AssigneeMitsui Kinzoku Company, Limited
InventorsTakuya Kuruma, Hiroki Sawamoto, Hidetoshi Inoue
Life of this patent
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Abstract
Provided is a zinc foil including a core portion containing zinc as a base metal and containing substantially no bismuth and a cladding portion located on at least one side of the core portion and containing zinc as a base metal and containing bismuth, wherein the core portion and the cladding portion are inseparably bonded to each other. It is preferable that the average zinc crystal grain size in the core portion is larger than the average zinc crystal grain size in the cladding portion. It is also preferable that the average zinc crystal grain size in the cladding portion is 0.2 μm or more and less than 24 μm.
Claims15
A zinc foil comprising:
- a core portion containing zinc as a base metal and containing substantially no bismuth;
- and
- a cladding portion located on at least one side of the core portion and containing zinc as a base metal and containing bismuth,
- wherein the core portion and the cladding portion are inseparably bonded to each other such that, in a cross-section of the zinc foil taken along a thickness direction of the zinc foil by a scanning electron microscope, at least one crystal grain of the cladding portion, having a shape that straddles an interface between the core portion and the cladding portion, is observed, and
- the cladding portion contains 99 mass % or more of zinc.
Dependencies are inferred from the claim text.