Risultati di ricerca
1 nov 2019 · Global skin friction diagnostics discussed in this paper are based on conventional surface flow visualizations in experimental fluid mechanics, including surface oil film, heat transfer, mass transfer, and pressure visualizations. The main measured quantities are oil-film thickness, surface temperature, surface scalar concentration, and surface ...
1 ago 2019 · The mechanical features of friction film formed on particles surface were characterized through the Nano/Micro indentation method, and the micro-topography was observed by SEM.
1 nov 2018 · Dry lubrication on ferroelectric films under bias voltage or stress is first observed. Friction on ferroelectric BiFeO3 film can be reduced by up to ∼40%. The phenomenon of dry lubrication here is explained according to P-T model. Depolarization field in ferroelectrics plays a key role towards dry lubrication.
1 mag 2024 · Minimizing friction and wear remains a big challenge for mechanical mobility systems and energy saving. We demonstrate that a remarkable synergistic lubrication effect could be induced with a novel “soft” and “hard” polysiloxane (PS)/Ti 3 C 2 T x nanocomposite coating and the industrial PAO4 lubricant oil, with the lowest friction of 0.01 together with negligible wear achieved for PS ...
1 giu 2023 · Raman analysis indicates that the structural evolution of DLC film should have a limited contribution on the different friction behaviors of DLC film against ZrO2, bearing steel and SiC balls.
1 mag 2017 · The study presented here investigated film formation and friction in grease lubricated rolling/sliding, non-conformal contacts under fully-flooded conditions. The influence of grease thickener type (diurea and lithium complex), base oil viscosity, temperature, roughness and entrainment speed on film thickness and friction was studied.
18 giu 2013 · Abstract. Friction behaviour of an ultrananocrystalline diamond film deposited by the microwave plasma-enhanced chemical vapour deposition technique is studied in a controlled humid atmosphere. The value of friction coefficient consistently decreases while increasing the humidity level during the tribology test.
