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A novel high entropy alloy (HEA) matrix self-lubricating composite was prepared by spark plasma sintering. In this composite, the CoCrFeNi HEA was selected as the matrix, Ag and BaF2/CaF2 eutectic were used as solid lubricants. The hardness, yield strength, compressive strength, and fracture toughness of the composite were 151 HV, 468 MPa, 787 MPa, and 18.3 MPa m0.5, respectively. The good mechanical...
A CoCrFeNi high entropy alloy matrix self-lubricating composite was prepared by spark plasma sintering using a mixture of CoCrFeNi high entropy alloy powder, nickel-coated graphite powder and nickel-coated MoS2 powder. The composite consisted of four phases: face-centered cubic phase of the high entropy alloy, graphite, MoS2 and nickel. Graphite and MoS2 existed in the composite were mainly due to...
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