鋼に対するMgO単結晶の摩耗における界面反応

概要

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Chemical reaction in the wear of MgO single crystals on steel was studied. When MgO single crystals were worn on the steel (S15C) disk at the sliding speed of 50 m/s and at the contact load of 200 g, an element and a state analysis of surface layers produced on the wear surface were carried out using the electron probe X-ray micro analyser.<BR>Oxidation of iron and diffusion of Fe into MgO single crystals were confirmed. The results of state analysis indicated that the oxide of iron was FeO and there was a diffusion process in MgO-FeO system in the wear interface. The interfacial material detected on the wear surface was magnesio-wustite. This wear may be also explained by a mechanism in which the surface layer was delaminated by fatigue caused after many cycles of repeated loading.
社団法人粉体粉末冶金協会の論文