Experimental coefficient-of-friction data for friction service life prediction of HEA/C multilayer coatings
Description
This dataset contains the processed coefficient-of-friction (COF) data used in the study “Prediction of friction service life for high-entropy alloy/carbon multilayer coatings.” The data were obtained from reciprocating friction and wear tests of three groups of FeCoNiCrMn high-entropy alloy/carbon (HEA/C) multilayer coatings deposited on H13 steel substrates. The friction tests were conducted at a sliding speed of 12 mm/s, a reciprocating amplitude of 6 mm, an ambient temperature of 20 °C, and a relative humidity of 30%. The sampling frequency was 20 Hz. Groups I and II were tested under a Hertzian contact pressure of 290 MPa, whereas Group III was tested under 365 MPa. Groups I and II had different multilayer structural parameters, while Groups II and III had the same coating structure but different loading conditions. The continuously recorded friction data were processed to obtain coefficient-of-friction sequences for subsequent degradation analysis. These data were used to construct RMS-based friction degradation indicators, identify the onset of significant degradation, determine the functional failure position, and develop and validate the remaining friction service life (RFSL) prediction model based on a nonlinear Wiener process. The dataset provides the friction-state evolution data supporting the analyses and results reported in the associated article and can be used for further studies on coating friction degradation, degradation-feature extraction, and remaining service life prediction.
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Institutions
- North University of ChinaShanxi, Taiyuan