Abstract
Study of friction-wear behaviour of X40CrMoV5-1 steel under static oxidation on slow sliding. This article deals with the friction-wear behaviour of X40CrMoV5-1 steel under static oxidation, slow sliding velocity and small sliding distance, without overlap to study oxide-induced friction and wear mechanisms. Characterisation of oxide-layer growth is established using Scanning Electron Microscopy (SEM), optical profilometry and X-ray diffraction. Friction tests are carried out on a pin-on-disc configuration. The study shows a transition between a severe-wear regime driven by abrasion and debris detachment to a low-wear regime induced by a tribological circuit where oxides contribute to the formation of a protective third-body layer.