Abstract
This paper is devoted to investigate the friction-reducing and wear protection performance of TiO2 nanoparticles as lubricant additive in fully formulated engine oil. The phase of TiO2 nanoparticles, synthesized by a sol–gel process, was characterized by XRD. A four-ball tribometer was used to compare the friction coefficient and wear when lubricated by engine oil in absence and presence of TiO2 nanoparticles. The surface chemistry of tribofilm was observed by XPS. The experiments showed that phase of TiO2 nanoparticles plays great role in determining the friction-reducing and wear protection of engine oil containing TiO2 nanoparticles. TiO2 nanoparticles upon calcination at 300 °C are amorphous, showing lowest hardness and then best friction-reducing and wear protection performance in engine oil. Rutile nanoparticles obtained upon calcination at the temperature above 700 °C, on the contrary, act as abrasive in the sliding contact and present larger wear than the blank engine oil.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
