Wear

From Academic Kids

For other uses, please see wear (disambiguation).
Mechanical failure modes
Buckling
Corrosion
Creep
Fatigue
Fracture
Melting
Thermal shock
Wear

In materials science, wear is the errosion of material from a solid surface by the action of another solid. The study of the processes of wear is part of the discipline of tribology.

There are four principle wear processes:

  1. Adhesive wear
  2. Abrasive wear
  3. Corrosive wear
  4. Surface fatigue

See also

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Adhesive wear: also known as scoring, galling, or seizing-occurs when two solid surfaces slide over one another under pressure. Surface projections, or asperities, are plastcally deformed and eventually welded toghether by the high local pressure. As sliding continues, these bonds are broken, producing cavities on the surface, projections on the second surface, and frequently tiny, abrasive Particles- all of which contribute to future wear of surfaces.

Abrasive Wear: When material is removed by contact with hard particles, Abrasive wear occurs. The particles either may be present at the surface of a second material or may exist as loose particles between two surfacse.

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