The invention provides a
boron-containing high-entropy
alloy coating and a preparation method thereof, and belongs to the field of
alloy coatings. Some B atoms are adopted as self-fluxing atoms to be subjected to
solid solution in a
solid solution body of the face-centered cubic structure, the
hardness of the
coating is improved, granular and short rod-like M2B hard phases are separated out in a
coating base, and due to separation of the hard phases, one one hand, the dispersion strengthening effect is achieved; on the other hand, the
solid solution reinforcing effect is lowered, the coating
hardness is lowered, and due to the
hardness improving effect of dispersion strengthening, solid phase strengthening is greatly offset, the influence of the coating hardness is lowered, finally, the coating hardness is still improved, and a
boron element is adopted as a secondary element to be added into high-entropy
alloy; due to the gap effect of non-
metal elements, the alloy
stacking fault energy is improved,
lattice deformation is increased, the
solid solution strengthening effect is achieved, the non-
metal element and the main element can form borides to be dispersed into alloy tissue, the dispersion strengthening effect is generated, and therefore the hardness and
corrosion resistance of the high-entropy alloy are improved.