In this work, atmospheric plasma spraying was used to deposit an equiatomic AlCoCrFeNiTi high-entropy alloy (HEA) coating with a thickness of 236 μm, a porosity of 1.6%, and an adhesive strength of 50.3 MPa. The as-sprayed coating mainly contained BCC1 and BCC2 phases, with only a trace amount of the FCC phase. Microhardness was four times that of 316 stainless steel and the volume wear rate at room temperature was one-fourth that of the substrate material. The wear rate decreased with increasing temperature from 25°C to 700°C, then increased from 700°C to 900°C. Over that range, the wear mechanism changed from delamination wear to oxidation and adhesion wear.

This content is only available as a PDF.
You do not currently have access to this content.