| Popis: |
This chapter introduces the tribological performances of the surface modification, including polymerization, nanocoating, and microencapsulation. It starts by the classification of surface treatment including polymerization and the rapid development of nanotechnology and nanomaterials leading to the need to modify the surface of nanoparticles (NPs) for various applications. It then explains the surface treatments to improve the mechanical properties of tribolayers and their long-term stability under boundary lubricated conditions. There is a full discussion of chromium oxide nanopowder (Cr2O3) coating on the tribological properties of polymer and a new method using supercritical CO2 as an antisolvent (SAS) for NPs coating/encapsulation. The system model, using silica NPs as the particle of the polymer for the coating material, of the SAS process leads to the heterogeneous nucleation of the polymer NPs. At the end of the chapter the effects of WS2 NPs lubricants on polymer and alloys with the appropriate parameters will be described and they will be shown to be an effective way to improve mechanical properties and microstructure. |
