Comparison of the Structure and Mechanical Properties of Coatings Arc-Sprayed with Eutronic Arc Flux-Cored Wires

The article compares the erosion resistance, roughness and hardness of coatings produced by arc spraying. The study was conducted to compare the properties of arc-sprayed coatings with EuTronic Arc 599 and EuTronic Arc 595 powder wires on ASTM A516 Gr. 55 unalloyed steel substrates. Tests showed that the EuTronic Arc coatings exhibited very high hardness, averaging 755 HV for the EuTronic Arc 595 coating and 821 HV for the Eutronic Arc 599 coating. Application of the coatings increased the hardness, relative to the parent material, by 360 % and 400 %, respectively. The EuTronic Arc 599 coating showed a significantly higher roughness averaging 16.12 μm, compared to 12.35 μm for the EuTronic Arc 595 coating, which was likely caused by greater plasticization of the material during spraying resulting from the absence of carbides.