Carbide Coatings on H-13 Hot Working Steel by HVOF Process: A Review

摘要

In this study, we reviewed the effect of WC-Co and Cr_3C_2-NiCr coatings on Die Steels by HVOF process with regard to their performance under abrasive wear conditions on the basis of the previous studies performed. The use of Dry Sand Abrasive Wear Testing Machine is made to study the wear tests and the effects of three parameters namely: speed (rpm), load and composition, on abrasive wear of the material. The HVOF sprayed WC-Co and Cr_3C_2-NiCr coatings on Die steels showed better abrasive wear resistance in comparison with their uncoated counter parts. It may be due to the higher hardness and toughness as a result of HVOF sprayed WC-Co and Cr_3C_2-NiCr coating in comparison with the uncoated Die steel.