Mechanical erosion and friction can be a major problem in many mechanical systems such as hydraulic equipment, fluid pump impellers, ship propellers, hydrodynamic bearings, fluid seals, inlets to heat-exchanger tubes, diesel engine wet cylinder liners, hydrofoils, liquid metal power plants, steam turbines, etc. Cavitation erosion is one of the most dangerous degradation mechanisms, since it causes huge surface damages. It is induced by the explosion of vapour bubbles that exert a pressure pulse. Antiwear coatings based on epoxy resins are used to protect the equipment. The carbon-based nano-materials can change the mechanical, thermal and electrical properties of coatings, but only few studies on tribological properties have been published. Therefore, this work was carried out to investigate the effect of carbon based epoxy nano-composites on the wear performance. The wear tests (ASTM G99) were carried out in bulk and with a coating of 1 mm thickness on aluminium substrate. Pin on disk wear test were carried out in dry sliding conditions against an alumina ball. The epoxy resin was Hysol 9483, while (G), graphene oxide (GO) and carbon nanotubes (MWCNT) were used as carbon additions at 0.5 wt.% loading. The tracks wear were tested and characterized by optical microscopy and the wear debris powders were characterized by X-ray diffraction.
Palabras clave: wear; epoxy; carbon nano-composite; x-ray diffraction
3rd International Conference on Fracture Fatigue and Wear - FFW2014, Kitakyushu, Fukuoka (Japón). 01 septiembre 2014
Fecha de publicación: septiembre 2014.
J. Abenojar, J. Tutor, Y. Ballesteros, J.C. del Real-Romero, M.A. Martínez Baena, Friction wear behaviour of carbon based epoxy nanocomposites, 3rd International Conference on Fracture Fatigue and Wear - FFW2014, Kitakyushu, Japón, 01-03 Septiembre 2014. , ISSN: 2294-7868