Composition having a corrosion protection layer and process for the production thereof
AssigneeHydro Aluminum Deutschland GmbH
InventorsManfred Mrotzek, Raimund Sicking
Life of this patent
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Abstract
A composite material can include a carrier material that is coated, at least over part of the surface, with a corrosion protection layer made of an aluminum alloy. The composite material can provide a defined, effective, durable corrosion protection and simultaneously have a high recycling potential. The aluminum alloy of the corrosion protection layer can have the following composition in % by weight: 0.8 ≦ Mn ≦ 1.8 Zn ≦ 0.05 Cu ≦ 0.05 Si ≦ 1.0 Cr ≦ 0.25 Zr ≦ 0.25 Mg ≦ 0.10 remainder aluminum and unavoidable impurities, individually a maximum of 0.05% by weight, in total a maximum of 0.15% by weight.
Claims17
A composite material, having a carrier material, wherein the carrier material is coated, at least over part of the surface, with a corrosion protection layer made of an aluminium alloy, wherein said corrosion protection layer is in direct contact with the carrier material and wherein the carrier material is formed from an Al—Mn—Cu-alloy and wherein the aluminium alloy of the corrosion protection layer consists of the following composition in % by weight:
- 0.8 ≦ Mn ≦ 1.8
- Zn ≦ 0.05
- Cu ≦ 0.05
- 0.4 ≦ Si ≦ 1.0
- Cr ≦ 0.25
- Zr ≦ 0.25
- Mg ≦ 0.10
- remainder aluminium and unavoidable impurities, individually a maximum of 0.05% by weight, in total a maximum of 0.15% by weight, wherein the alloy of the corrosion protection layer contains Zn, Cu, and Mg.
A composite material, having a carrier material, wherein the carrier material is coated, at least over part of the surface, with a corrosion protection layer made of an aluminium alloy, wherein said corrosion protection layer is in direct contact with the carrier material and wherein the carrier material is formed from an Al—Mn—Cu-alloy and wherein the aluminium alloy of the corrosion protection layer consists of the following composition in % by weight:
- 0.8 ≦ Mn ≦ 1.8
- 0.4 ≦ Si ≦ 1.0
- Cr ≦ 0.25
- Zr ≦ 0.25
- Mg ≦ 0.10
- remainder aluminium and unavoidable impurities, individually a maximum of 0.05% by weight, in total a maximum of 0.15% by weight, wherein the alloy of the corrosion protection layer contains Zn and Cu, and wherein the corrosion protection layer is free of levels of Zn and Cu beyond 0.05% by weight, individually.
Dependencies are inferred from the claim text.