Corrosion_frottementFriction-wear at an axle-cylinder contact point.

8- Fretting corrosion and tribocorrosion  


Fretting-corrosion is a combined damage mechanism involving corrosion at points where two moving metal surfaces make rubbing contact. It occurs essentially when the interface is subjected to vibrations (repeated relative movement of the two contacting surfaces) and to compressive loads. The amplitude of the relative movement is very small, typically of the order of a few microns. When the frictional movement in a corrosive medium is continuous, the resulting process is termed tribocorrosion.

Means of preventing fretting corrosion :

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