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1 Fretting corrosion is primarily a surface damage phenomenon occurring as a result of small cyclic movements between two materials caused by cyclic loading. Fretting damage can occur in vacuum, although it then would be better to speak of fretting, rather than fretting corrosion.
The solution is to prevent such direct contact with the use of separating materials, such as specific paints or gaskets. It is not necessary to isolate copper from lead, tin or stainless steel under most circumstances. The principal metals of concern in terms of direct contact are aluminum and zinc.nother type of corrosion, which affects copper, is caused by the flow of acidic water concentrated on a small area of copper. This type, often called erosion corrosion, occurs when rain falls on a non-copper roof such as tile, slate, wood, or asphalt.