Borhani M.R.*, Mozafarinia R., Ramazani M., Ebrahimzadeh I.
Abstract:
In the present study, Al2O3-DLC-MoS2-Au nanocomposite coating was deposited by physical vapor deposition (PVD) technique using two thermal sources including electron beam and resistant source on 440C steel as substrate to improve the wear behavior of this steel (one of the most widely used metals in themoving aerospace systems). To evaluation of tribological behavior of coating, Vickers micro hardness test, roughness test and analysis of wear in dry air (Nitrogen) and humid atmosphere by pin on disk test were performed. The results of surveys done by Energy Dispersive Spectroscopy and scanning electron microscope of abrasion of the coating, showed that the presence of all components of coating with suitable adhesion and toughness on substrate and also Roughness and hardness up much better than requirements for space coatings and improvement in tribological behavior of substrate by depositing the coating that was discussed above.
Keywords: Moving Aerospace Systems, Nanocomposite Coatings, Physical Vapor Deposition, Tribological Behavior
No comment