Coatings based on self-fluxing alloys with chemical/phase composition and structure gradients have unique properties. In particular, the working layer formed from reinforcing component particles on the surface of a spray coating can increase many times over its wear resistance [1], and migration of polydisperse refractory particles leads to the improvement of the coating quality owing to the decrease in the porosity [2]. Study of the factors responsible for the appearance of layer structures varying across the cross section, elucidation of their origin, and systematization of the compositions and synthesis conditions of protective coatings make it possible to control the composition-structure—property system at a higher level. This problem is partially addressed in the present work, which was carried out for the first time for wear- and corrosion-resistant and refractory coatings.
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