Wear resistance

The wear resistance - or, better wear resistance (in accordance with DIN 50320) - is the resistance of a solid body against wear (mechanical abrasion). In the case of metals, the body surface is often hardened or coated to improve it. Ceramic materials are particularly wear-resistant. Appropriate lubrication also increases wear resistance.

steel construction

With steel , a certain wear resistance is achieved through heat treatment processes ( vacuum hardening , case hardening, induction hardening, flame hardening, nitriding, etc.).

Naturally hard, wear-resistant steels have a high proportion of carbon (C) and manganese (Mn) in their structure.

In addition, wear-resistant surfaces can be achieved by coating with wear-resistant protective layers ( TiN , TiCN , TiAlN , WC / C, hard chrome, etc.). Some coating methods are e.g. B. PVD coatings, CVD coatings, hard chrome plating.

Road construction

The wear resistance of concrete or asphalt pavements depends on the properties of the mineral substances used , such as frost and volume resistance, polishability, grain shape or the adhesion between mineral substance and binder , and the properties of the mortar or bitumen .