Aluminum alloy foil, laminate, method of producing aluminum alloy foil, and method of producing laminate
AssigneeToyo Aluminium Kabushiki Kaisha
InventorsAkira SHINGU, Mitsunari OOYAGI
Life of this patent
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Abstract
An aluminum alloy foil includes: aluminum; silicon; manganese; iron; zinc; copper; and magnesium. In the aluminum alloy foil, a total of a content of the silicon and a content of the iron is less than or equal to 0.1 mass %. In the aluminum alloy foil, a ratio of a mass of the manganese to a total mass of the silicon and the iron is more than or equal to 7.0. In the first surface, an area ratio of second phase particles each having an equivalent circle diameter of more than or equal to 1.5 μm is less than or equal to 0.1%.
Claims20
An aluminum alloy foil having a first surface, the aluminum alloy foil comprising:
- aluminum;
- silicon;
- more than or equal to 0.4 mass % and less than or equal to 3.04 mass % of manganese;
- more than or equal to 0.03 mass % and less than or equal to 0.08 mass % of iron;
- more than or equal to 0.00001 mass % and less than or equal to 0.03 mass % of zinc;
- more than or equal to 0.00001 mass % and less than or equal to 0.02 mass % of copper;
- and
- more than or equal to 0.00001 mass % and less than or equal to 0.01 mass % of magnesium, wherein
- in the aluminum alloy foil, a total of a content of the silicon and a content of the iron is less than or equal to 0.1 mass %,
- in the aluminum alloy foil, a ratio of a mass of the manganese to a total mass of the silicon and the iron is more than or equal to 7.0, and
- in the first surface, an area ratio of second phase particles each having an equivalent circle diameter of more than or equal to 1.5 μm is less than or equal to 0.1%.
A method of producing an aluminum alloy foil, the method comprising:
- preparing an ingot by melting and casting;
- and
- cold-rolling the ingot, wherein
- the ingot including
- aluminum,
- silicon,
- more than or equal to 0.4 mass % and less than or equal to 3.04 mass % of manganese,
- more than or equal to 0.03 mass % and less than or equal to 0.08 mass % of iron,
- more than or equal to 0.00001 mass % and less than or equal to 0.03 mass % of zinc,
- more than or equal to 0.00001 mass % and less than or equal to 0.02 mass % of copper, and
- more than or equal to 0.00001 mass % and less than or equal to 0.01 mass % of magnesium,
- a total of a content of the silicon and a content of the iron is less than or equal to 0.1 mass %,
- a ratio of a mass of the manganese to a total mass of the silicon and the iron is more than or equal to 7.0, and
- each of an area ratio of second phase particles each having an equivalent circle diameter of more than or equal to 1.5 μm in a surface of the ingot to be cold-rolled in the cold-rolling, and an area ratio of the second phase particles in the surface of the ingot prepared in the preparing is less than or equal to 0.1%.
Dependencies are inferred from the claim text.