This is the mechanical action of friction and wear that causes the erosion of the material.
It occurs when a hard and rough surface slides over a less hard surface or when hard particles are inserted between two surfaces that slide.
Wear by abrasion may be caused by material chip removal, microcracks, grinding or by acceleration of wear due to surface fatigue due to induced deformation.
The abrasion can be reduced by increasing the hardness of the materials in contact, reducing the roughness of the material of greater hardness and by lubrication.