Solid State Phenomena Vol. 379

Abstract: This study investigates the indentation fracture toughness (IFT) of six HVOF-applied cermet coatings. The materials tested were WC-42CrC-16Ni and Cr₃C₂-37WC-18NiCoCr. For each material, three coatings were produced using varying deposition parameters. IFT was measured under a 100 N load, and the K_iC values were calculated using the method proposed by Chicot. For the Cr₃C₂-37WC-18M coating, the K_iC value increased with higher oxygen and kerosene flow rates. Conversely, for the WC-42CrC-16Ni coating, higher K_iC values were observed at lower oxygen and kerosene flow rates.

Abstract: The article deals with the influence of process parameters on the properties of the protective coating deposited by Cold Spray technology on X52 pipeline steel. Part of the work is the evaluation of the effect of heat treatment on the resulting properties of the coating. Diamalloy 1003 powder was deposited on X52 steel substrate using four different process parameters, and then the samples were heat treated at 600°C, 800°C and 1000°C. The evaluation of results included analysis of microstructure, porosity and microhardness. The results show that heat treatment has a significant effect on the properties of the coating. The lowest porosity values for all tested parameters were achieved after heat treatment of 1000°C/1 hour.