Experimental Research on Tribological Properties of $Mn0.78Zn0.22Fe2O4$ Magnetic Fluids

The synthesis and application of nanometer-sized particles have received considerable attention in recent years because of their different physical and chemical properties from those of the bulk materials or individual molecules; however, few experimental investigations on the tribological properties of lubricating oils with and without nanoferromagnetic particles have been performed. This work investigates the tribological properties of $Mn0.78Zn0.22Fe2O4$ nanoferromagnetic as additive in $46#$ turbine oil using a four-ball friction and wear tester. It is shown that the $46#$ turbine oil containing $Mn0.78Zn0.22Fe2O4$ nanoparticles has much better friction reduction and antiwear abilities than the base oil. The $46#$ turbine oil doped with $6wt%$$Mn0.78Zn0.22Fe2O4$ nanoparticles show the best tribological properties among the tested oil samples, and $PB$ value is increased by 26%, and the decreasing percentage of wear scar diameter is 25.45% compared to base oil.