The invention discloses a high-entropy
alloy coating and a preparation method thereof, and relates to the technical field of preparation of high-entropy
alloy coatings. The high-entropy
alloy and the
coating of the high-entropy alloy do not contain
silicon elements, and the preparation method comprises the steps that according to the composition proportion of the high-entropy alloy, a magnetron
sputtering technology is adopted,
metal elementary substance targets of all components serve as
sputtering target materials for
sputtering, elementary substance films are sequentially deposited on a base body, and a multi-layer film precursor is formed; and then the multi-layer film precursor is subjected to
vacuum annealing, so that the single-layer uniform high-entropy
alloy coating is obtained. According to the method, accurate preparation of the multi-layer film precursor can be achieved by accurately controlling the sputtering rate or sputtering power of all elements, then the elements in the multi-layer film precursor are fully mixed through
vacuum annealing treatment, and the uniform high-entropy
alloy coating is formed. The high-entropy
alloy coating prepared by the process, such as an AlCoCrFeNi high-entropy alloy
coating, has excellent structural uniformity, and is suitable for the high and new technical fields of
aerospace,
energy engineering and the like.