Response surface methodology (RSM) based analysis on slurry erosion behavior of laser textured and PTFE sprayed VC+TiC coating deposited via HVOF

Abstract

This research article focuses on investigating the slurry erosion behavior of vanadium carbide (VC) + titanium carbide (TiC) coating deposited via high-velocity oxy-fuel (HVOF) spraying. The study also focuses on examining the potential effects of laser texturing and polytetrafluoroethylene (PTFE) spraying on enhancing the resistance of the deposited coating against slurry erosion. Moreover, the study employs response surface methodology (RSM) to precisely model and optimize erosion behavior across various slurry conditions, while considering key process parameters such as velocity of jet, angle of impact, and concentration of slurry. By utilizing a central composite face-centered design (CCFD) matrix, an empirical correlation between these parameters and resulting mass loss is established. The failure mechanism was also examined using SEM images.