HARDNESS AND POST-SCRATCH SURFACE MORPHOLOGY OF Cr₃C₂–NiCr COATINGS AFTER ULTRASONIC NANOCRYSTAL SURFACE MODIFICATION
The hardness and post-scratch surface morphology of Cr₃C₂–NiCr coatings subjected to ultrasonic nanocrystal surface modification (UNSM) were examined for detonation-sprayed (DS) and high-velocity oxy-fuel (HVOF) deposits. Four treated samples per deposition route were evaluated at static loads of 20 and 30 N and vibrat...