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AssigneeVolvo Personvagnar AB
InventorsMalte Isaccsson, Henrik Hyttel, Thomas Hermansson, Stig Andersen, Kalsten Andersen, Mikael Fransson
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Arrangement (1) for decreasing galvanic corrosion between metal components that includes at least a first component (2) in which a first metal is a part, and at least a second component (3) in which a second metal is a part, whereby the first metal has a higher normal-electrode potential (e0) than the second metal. The first component (2) is intended, after mounting, to be in electrical contact with the second component (3). The first component (2) is coated with a substantially continuous surface layer (4) that is adjusted to give the second component (3) an insignificant galvanic corrosion velocity after mounting. The invention is preferably applied in association with attachment elements such as bolt or screw joint reinforcements, which include a more noble metal than the component or the components with which the attachment element should be in contact with after mounting, and is particularly, preferred for vehicle components.
An arrangement for decreasing galvanic corrosion between metal components, said arrangement comprising at least a first component in which a first metal is a part, and at least a second component in which a second metal is a part, whereby the first metal has a higher normal-electrode potential (e°) than the second metal, and whereby the first component is intended after mounting to be in electrical contact with the second component, the first component is coated with a surface layer substantially continuous separating said first metal and said second metal, said substantially continuous surface layer being adjusted to give the second component an insignificant galvanic corrosion velocity after mounting, and said surface layer comprising a material selected form the group consisting of indium, and indium compound, or an indium alloy, and said second metal comprising a metal selected from a group consisting of magnesium, a metal alloy of magnesium or a metal alloy of aluminum.
Dependencies are inferred from the claim text.