Composite material and method for producing said composite material
AssigneeAmag Rolling GmbH
InventorsPetra Morak, Gerhard Hanko
Life of this patent
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Abstract
A composite material and method for producing said composite material are disclosed, with a support layer composed of a wrought aluminum alloy and with an external solder layer composed of an aluminum solder alloy provided on one or both flat sides of the support layer, wherein the solder layer has partially exposed silicon particles on its surface, which constitute a first area fraction of the total area of the surface of the solder layer. In order to reliably ensure flux-free solderability, it is proposed for the solder layer to have a rolled surface and for its aluminum solder alloy to contain at least 0.1 wt % bismuth (Bi), wherein the first area fraction is greater than 2.5%.
Claims20
A composite material comprising:
- a support layer composed of a wrought aluminum alloy, and
- an external solder layer provided on one or both flat sides of the support layer, wherein the external solder layer is composed of an aluminum solder alloy containing at least 0.1 wt % bismuth (Bi) and the solder layer has a rolled surface,
- wherein the solder layer has partially exposed silicon particles on its surface, which constitute a first area fraction of a total area of the surface of the solder layer, wherein the first area fraction is greater than 2.5%.
Dependencies are inferred from the claim text.