Performance of HVOF Sprayed NiCr and Stellite-6 Coatings under Pin on Disc Wear Testing
Wear behavior of the HVOF deposited NiCr and Stellite-6, coatings on Fe-base alloy steel were evaluated by the pin-on-disc techniques. The coatings were significantly harder and less porous. SEM/EDAX and XRD techniques were used to analyse the worn out surface and wear debris. The Fe2O3 was identified as the major phase in the wear debris. The wear mechanism is mild adhesive wear in nature. The coatings protected the substrate steels against the adhesive wear significantly.
H. Singh et al., "Performance of HVOF Sprayed NiCr and Stellite-6 Coatings under Pin on Disc Wear Testing", Materials Science Forum, Vol. 701, pp. 21-29, 2012