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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.
I have come across numerous cases of galvanic corrosion between zinc plated carbon steel fasteners and aluminum panels. In this case the aluminum is the anode and the carbon steel is the cathode. The surprising thing is that very often the steel fasteners have a great deal of red rust and the aluminum is fine. From what I understand of galvanic corrosion, I would have expected very little corrosion to either material.