The Influence of Co–Cr, Ni and NiCr Binders on the Performance of WC Coatings Deposited by Detonation Spraying

In the present work, the effect of the composition of the metal binder (Co–Cr, Ni, and NiCr) on the structure and performance properties of WC-based coatings obtained by detonation spraying is investigated. The coatings were characterized using microstructural analysis, EDS mapping, microhardness measurements, tribological testing, and corrosion analysis. The results show that changing the type of binder significantly affects the porosity, distribution of the WC phase, hardness, and tribological behavior of the coatings. The best combination of properties—the lowest coefficient of friction, highest hardness, and the highest corrosion resistance—was obtained for the WC–Co–Cr coating. These results indicate the potential of these coatings for extending the service life of pipeline fittings and equipment in the oil and gas sector.