What is Adhesive wear?

Wear in which metals bond at the real contact spots and, as sliding shears the junctions, material transfers to the counterface or detaches. It causes seizure.

Japanese name: 凝着摩耗

Adhesive wear appears in 1 practice question across 1 topic, including Surface treatment and tribology.

Field: Surface treatment and tribology

Try it: questions about Adhesive wear

Which of the following descriptions of wear mechanisms corresponds to adhesive wear?

  1. AHard particles or hard asperities on the counterface scratch and cut material away from a softer surface
  2. BContact stresses repeated in rolling contact and the like create cracks below the surface, and the surface layer comes off in small flakes
  3. CMetals bond strongly at the real contact spots, and when sliding shears the junctions, material from one side transfers to the other or detaches to form wear debris
Show answer and explanation

Answer: C. Metals bond strongly at the real contact spots, and when sliding shears the junctions, material from one side transfers to the other or detaches to form wear debris

Adhesive wear occurs when surface atoms bond at the real contact spots (microscopic welding), and when sliding shears the junctions, material tears out of the weaker side, transfers to the counterface and eventually detaches as wear debris. It is severe between clean metals of the same kind and in bad cases leads to seizure. It can be reduced by pairing metals with little mutual solubility, and by lubricants and oxide films. Hard particles or asperities cutting a surface is abrasive wear, and cracks growing from below the surface under repeated contact stress until flakes come off is fatigue wear (fatigue pits and spalling), seen in bearings and gears. In real wear, several of these mechanisms often act at the same time.

Adhesive wear in the explanations

Questions that mention Adhesive wear (1)

  1. Which of the following descriptions of wear mechanisms corresponds to adhesive wear?

Related terms

Abrasive wear Archard wear equation Carburizing Electroless nickel plating Nitriding Real area of contact Stribeck curve

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