Figure Source Data Sets for: "Electrochemical and Tribological Performance of Hybrid 60 and AISI 52100 Bearing Steels in Water-Based Lubricants"

The data include polarization curves recorded under both stagnant conditions (0 rpm) and hydrodynamic conditions (2300 rpm), as well as measurements performed at different temperatures (25 °C and 40 °C). The dataset consists of electrode potential values (referenced to Ag/AgCl) as a function of logarithmic current density. Units: Electrode potential, volts vs. Ag/AgCl (V) Current density, microamperes per square centimeter (µA/cm²) Data description – Figure 6: Friction coefficient versus time This dataset contains friction coefficient measurements obtained on a ball-on-disc tribological tests for AISI 52100 and Hybrid 60 bearing steels lubricated with a water-based lubricant.

The tests were conducted using a Mini Traction Machine (MTM) under a constant normal load corresponding to a maximum Hertzian contact pressure of approximately 1.2 GPa and at a lubricant temperature of 40 °C. The friction coefficient was recorded over a total test duration of 12 hours. Units:Time, hours (h)Friction coefficient, dimensionless (–)