Abstract

In this study, the CrFeNiAl0.3Ti0.3 high entropy alloy coating was deposited onto a SUS304 substrate steel by detonation spraying. The CrFeNiAl0.3Ti0.3 coating consists of FCC, BCC and B2 phases. It's hardness, bonding strength and porosity are 576 HV, 86 MPa and 0.87%, respectively. In seawater, the tribological properties of the coating depends on the counterparts. The CrFeNiAl0.3Ti0.3/SiC sliding -pairs presents the best tribological properties in seawater due to the lubricious SiO2 & sdot;nH2O and a dense tribo-layer. For AISI 440 C and Al2O3 counterparts, moderate abrasive wear occurs for the coating. For CuZn40 alloy counterpart, a soft copper -rich tribo-layer reduces the wear. For Ti6Al4V counterpart, many hard TiO2 and Al2O3 abrasion particles lead to the severe wear of the two contacting surfaces.

Keywords Plus：CORROSION BEHAVIOR，MICROSTRUCTURE，CR2O3，WEAR，GUN

Published in TRIBOLOGY INTERNATIONALarrow_drop_down，Volume194；10.1016/j.triboint.2024.109480，JUN 2024