Tribological enhancement of potential electric vehicle lubricants using coated TiO2 nanoparticles as additives
نویسندگان
چکیده
This work presents the antifriction and antiwear properties of TiO2 nanoparticles coated with oleic acid, TiO2-OA, as additives a low viscosity polyalphaolefin base oil, PAO8. To find optimal concentration nanoadditives that minimize friction wear, four PAO8 based nanodispersions were formulated: + 0.10 wt% 0.25 0.35 TiO2-OA 0.50 TiO2-OA. Tribological experiments performed under pure sliding rolling-sliding conditions at 120 °C, formulated nanolubricants oil. All showed lower coefficients than obtained reaching maximum reductions for nanolubricant, both types test conditions. The tribological specimens tested fewer wear those PAO8, finding highest decreases also being 26 %, 65 % 73 in track width, depth area, order. Through Raman microscopy roughness study worn samples, it can be inferred tribofilm, mending polishing mechanisms occur. Moreover, thermal conductivity nanolubricant (0.35 wt%) was measured 20, 30, 40 50 °C.
منابع مشابه
Tribological Properties of Ionic Liquids Lubricants Containing Nanoparticles
......................................................................................................................ii DEDICATION .................................................................................................................. iv ACKNOWLEDGMENTS .................................................................................................. v TABLE OF CONTENTS ...............
متن کاملSynthesis of Silica-coated Iron Oxide Nanoparticles: Preventing Aggregation Without Using Additives or Seed Pretreatment
The Stober process is frequently used to prepare silica-coated iron oxide nanoparticles. This is usually achieved by seeding a reaction mixture consisting of water, ethanol and a catalyst with iron oxide particles and adding a silica precursor. The hydrolysis and condensation of precursor monomers results in the deposition of a silica layer on iron oxide particles. However, this process is acco...
متن کاملSynthesis of Silica-coated Iron Oxide Nanoparticles: Preventing Aggregation Without Using Additives or Seed Pretreatment
The Stober process is frequently used to prepare silica-coated iron oxide nanoparticles. This is usually achieved by seeding a reaction mixture consisting of water, ethanol and a catalyst with iron oxide particles and adding a silica precursor. The hydrolysis and condensation of precursor monomers results in the deposition of a silica layer on iron oxide particles. However, this process is acco...
متن کاملTribological behavior of vegetable oil-based lubricants with nanoparticles of oxides in boundary lubrication conditions
This work studied the development of vegetable based lubricants and the addition of oxides nanoparticles (ZnO and CuO) as additive for extreme pressure (EP), exploring the EP and oil base influence in tribological behavior. The results showed that with the addition of nanoparticles to conventional lubricant, the tribological properties can be significantly improved. A smoother and more compact ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Molecular Liquids
سال: 2023
ISSN: ['0167-7322', '1873-3166']
DOI: https://doi.org/10.1016/j.molliq.2022.121097