Aluminum alloy foil, laminate, method of manufacturing aluminum alloy foil, and method of manufacturing laminate

摘要

PROBLEM TO BE SOLVED: To provide an aluminum alloy foil and a laminate having the same moisture and heat resistance as a conventional aluminum alloy foil, but having improved surface corrosion resistance to salt water as compared with the conventional aluminum alloy foil. An aluminum alloy foil 1 is an aluminum alloy foil having a first surface 1A. The aluminum alloy foil 1 includes aluminum, silicon, manganese of 0.4% by mass or more and 3.04% by mass or less, iron of 0.03% by mass or more and 0.08% by mass or less, and 0.00001% by mass or more. It contains 0.03% by mass or less of zinc, 0.00001% by mass or more and 0.03% by mass or less of copper, and 0.00001% by mass or more and 0.001% by mass or less of magnesium. In the aluminum alloy foil 1, the total mass ratio of silicon and iron is 0.1% by mass or less. In the aluminum alloy foil 1, the ratio of the mass of manganese to the total mass of silicon and iron is 7.0 or more. On the first surface 1A, the area ratio of the second phase particles having a circle equivalent diameter of 1.5 μm or more is 0.1% or less. [Selection diagram] Fig. 1