A study of mild oxidational wear for conditions of low load and speed

摘要: Abstract A vertical pin on a horizontal disc wear test machine has been used to conduct series of experiments 52 100 steel in air under dry sliding conditions. The were performed conditions low load and speed, corresponding the mild region below Welsh T 1 transition. investigation involved loads from 5 50 N range speeds 10 −3 1.0 m s −1 ; resulting pins debris analysed using number techniques including scanning electron microscopy (SEM), powder X-ray diffraction, Vickers' microhardness testing Auger spectroscopy (AES). Wear rates found decrease with increasing speed up transition, increase load, while transition decreased load. protective load-bearing plateaux consisted agglomerate composed rhombohedral oxide α-Fe 2 O 3 , varying proportions metal debris. SEM AES results show thickness about μm, reflecting work-hardened subsurface layer speed.