Wear protection of steels by boriding, vanadizing, nitriding, carburising, and hardening

The wear behaviour of the differently treated steel surface was examined under conditions of adhesion, tribooxidation, abrasion and surface fatigue. Like and unlike surface pairs were tested, in the absence and presence of a lubricant.In adhesive wear the best pairing is two nitrided surfaces, except over long periods of running when borided surfaces could be better. Vanadized surfaces are superior intribooxidative and abrasive wear situations. It surface fatigue is acting, casehardening is the best means to reduce wear.