Talk:Fretting

Fretting corrosion
Fretting (or fretting corrosion) refers to corrosion damage at the asperities of contact surfaces. This damage is induced under load and in the presence of repeated relative surface motion, as induced for example by vibration. The ASM Handbook on Fatigue and Fracture defines fretting as: "A special wear process that occurs at the contact area between two materials under load and subject to minute relative motion by vibration or some other force."

For more info see:
 * Corrosion-doctors
 * EPI inc article

Steel
"Strictly this debris is not 'rust' as its production requires no water." --> The air contains water, leading to the 'rust' on the steel part. So technically, the water is still the cause of rust.