Examination of tribological properties of oxide-polymer and carbide-polymer coatings formed by flame, plasma and HVOF spray processes (original) (raw)

In this paper, the tribological performance of composite (oxide and carbide) coatings applied on a 2014-T6 aluminum alloy substrate is presented. Before coating process oxides were mixed with 10% polytetrafluoroethylene(PTFE) and carbides were mixed with 6% ethylene trifluoroethylene (ETFE). Plasma sprayed Al2O313TiO2+10%PTFE coating exhibited higher hardness and wear resistance than flame sprayed Al2O313TiO2+10% PTFE coating. For carbide coatings, WC12Co+6% ETFE coating formed by HVOF process exhibited superior wear resistance than WC12Co+6% ETFE coating formed plasma process.