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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.
Rev 3-4-2009 Corrosion & Corrosion Resistance Galvanic Corrosion The issue of corrosion poses an extreme concern in design. One of the first questions a designer must address when analyzing a fastener application is whether the fastener will be subjected to a corrosive attack during service.ther Types of Corrosion Concentration-cell and pitting corrosion contrast with galvanic corrosion in that concentration-cell and pitting require only one metal in the presence of an electrolyte to set up an attack system.