A pin-on-disc study of airborne wear particles from dry sliding wheel-rail contacts
2016 (English)In: Civil-Comp Proceedings, ISSN 1759-3433, Vol. 110Article in journal (Refereed) PublishedText
Pin-on-disc laboratory tests were carried out to identify the generation of airborne wear particles in wheel-rail contacts under different sliding velocities. The results show that the sliding velocity significantly influences both the number and size distribution of airborne wear particles. A comparison of the contact temperature was obtained during tests. For tests with high sliding velocities (1.2 and 3.4 m/s), the particle number concentration level was related to the elevated contact temperature in selected time intervals. Moreover, morphological and elemental analyses of collected particles and pin worn surfaces were studied by using a scanning electron microscope and field emission-scanning electron microscope. The data suggests that the oxide layers were detected within the pin's worn surfaces and an abundant presence of iron-oxide containing particles was observed. Therefore, it can be concluded that abundant fine and ultrafine airborne particles are more likely to be produced from an oxidative wear process in a wheel-rail contact under high sliding velocities.
Place, publisher, year, edition, pages
Civil-comp press , 2016. Vol. 110
Airborne wear particles, Contact temperature, Iron oxide containing particles, Oxidative wear, Particle number concentration, Scanning electron microscope, Wheel-rail contact, Electron emission, Plastics fillers, Scanning, Scanning electron microscopy, Vehicle wheels, Velocity, Wheels, Airborne wears, Wheel-rail contacts, Iron oxides
IdentifiersURN: urn:nbn:se:kth:diva-186745ScopusID: 2-s2.0-84964374728OAI: oai:DiVA.org:kth-186745DiVA: diva2:931752
QC 201605302016-05-302016-05-132016-09-11Bibliographically approved