Tribological Properties of Black Phosphorus Quantum Dots as Water-based Lubrication Additive
In order to improve the surface quality of titanium alloy processing and reduce its processing cost.Black phosphorus quantum dots(BPQDS)which have the advantages of higher bearing capacity and lower friction are used as the efficient lubrication medium for titanium alloy processing fluid.Using MS-T3001 friction and wear tester,the tribological properties of BPQDS as water-based lubrication additive are studied with GCr15/TC4 as frictional pair.The experimental results show that the average transverse size and the thickness of BPQDS are 4.44 nm±0.86 nm and less than 4 nm,respectively.BPQDS are presented the excellent dispersion stability in the ultrapure water.With the increase of contact pressure,the coefficient of friction(COF)and wear rate are decreased rapidly and then increased slowly.At the contact press of 1 273 MPa and the content of 119.3 mg/L,the average COF and wear rate of BPQDS as water-based lubrication additive are decreased by 27.6％and 28.29％respectively compared with ultra-pure water.The analysis of the worn surface find that the anti-wear and antifriction mechanism of BPQDS as water-based lubrication additive is the friction chemical reaction film composed of Fe2O3,TiO2,Al2O3 oxides formed on the worn surface of titanium alloy and the synergism of the interlaminar shear and ball effect of the BPQDS.The research results provide a theoretical basis for the industrial application of black phosphorus as water-based lubrication additive in the field of titanium alloy cutting lubrication.
black phosphorus quantum dotslubricantion additivetribological propertieslubrication mechanism
NETL
NSTL
万方数据
维普
