Slitasjebestandige

Slitasjebestandige describes materials or surfaces that resist wear due to mechanical action such as friction, abrasion, erosion, or repeated contact. Wear is the progressive loss of material during service, and slitasjebestandige materials are designed to maintain dimensions, strength, and function under these conditions.

Key factors influencing wear resistance include hardness, toughness, and the microstructure of the material; the presence of protective coatings or surface finishes; and the operating environment (dust, moisture, temperature). Achieving wear resistance often involves alloying, heat treatment, or surface engineering to create hard, tough, and low-friction surfaces.

Common strategies to improve wear resistance are the use of hard metals and ceramics, advanced coatings (for example, PVD and CVD coatings such as TiN or TiC, ceramic or diamond-like carbon coatings), and composite materials. Hard-wearing polymers with fillers or reinforcements can also provide suitable wear performance in certain applications.

Applications span areas where sliding or abrasive wear is a concern, including machine components (gears, bearings, piston rings), cutting tools, molds, mining equipment, and some medical implants. Wear resistance directly affects tool life, reliability, and maintenance intervals.

Testing and standards for wear resistance employ abrasion and sliding wear methods (for example, pin-on-disk tests) to determine wear rate or volume loss and related properties such as the coefficient of friction. Results depend on load, speed, temperature, lubrication, and the presence of particulates.

See also: wear, abrasion resistance, surface engineering, hardening, coatings.