What type of wear is caused by high velocity particles impacting a surface?

Erosive wear is specifically associated with the impact of high-velocity particles on a surface. This process occurs in environments where particles, such as dust, sand, or other abrasives, are propelled at high speeds towards a material. The repeated impact from these particles can erode the surface, leading to material loss and potential failure over time.

In contrast, cavitational wear typically involves the formation and collapse of bubbles in a liquid, leading to shock waves that can erode surfaces. Abrasive wear arises from the mechanical action of hard particles being dragged across a surface, generally due to rubbing contact rather than high-velocity impacts. Fatigue wear refers to material degradation that occurs due to repeated cyclic loading, which is distinct from the direct impact noted in erosive environments.

Therefore, erosive wear is the correct classification for the type of wear caused by high-velocity particle impacts, as it accurately captures the mechanism and the circumstances leading to material degradation.