TitleStudies on thermo-physical and tribological properties of nanolubricants formulated with surfactant-modified CeO2 nanoparticles in 500n base oil – A response surface methodology approach
SourceAsiatrib-2018, pp. 427-429
AuthorChacko Preno Koshy, Perikinalil Krishnan Rajendrakumar


Thermo-physical and tribological properties of nano-lubricants formulated from 500N base-oil and cerium oxide (CeO2) nanoparticles are studied using a customized pin-on-disc tribometer. CeO2 nanoparticles are prepared by precipitation method and characterization is carried out using FESEM and EDS. Experimental data are used to formulate a response surface methodology (RSM) model in ANOVA using box behnken design (BBD). Optimum concentration of CeO2 nanoparticles in 500N base-oil for minimum friction and wear is estimated to be 0.56% weight. Effect of temperature on viscosities and flash and fire-points of the lubricants are studied for different nanoparticle concentrations. Stability analyses by dynamic light scattering (DLS) have been carried. FESEM imaging coupled with EDS analyses helps to identify the possible mechanisms of lubrication


Asiatrib-2018, pp. 427-429