The invention provides a
silicon-containing high-entropy
alloy coating and a preparation method thereof, and belongs to the field of
alloy coatings. According to the
silicon-containing high-entropy
alloy coating and the preparation method thereof, a
silicon element is used as a secondary element and also is a gap element to be added into CoCrCuFeMn high-entropy alloy so that the quite good high-temperature
softening resistance can be achieved through a gap effect of non-
metal elements, then the lattice
distortion of the high-entropy alloy of the kind can be increased, a
solid solution strengthening effect can be achieved, the silicon element and the main element can also form a
silicide to be dispersed in the alloy structure, a dispersion strengthening effect is generated, so that the
hardness and the
wear resistance of the high-entropy alloy of the kind are improved; the self-fluxing element Si is added so that the fluidity of the alloy in the
liquid state can be improved, and then the macroscopic morphology of the surface of the
coating is improved; and part of the Si can replace Cr with the large atom
radius, so that the lattice
distortion effect of the alloy is intensified, then the
peak value of the FCC phase in the high-entropy alloy structure is changed, through the addition of the Si, the BCC phase can be converted to the FCC phase in the high-entropy alloy, so that thevolume fraction of the FCC phase is promoted to be increased.