FIELD: chemistry; metallurgy.
SUBSTANCE: method involves supplying powder composition from at least two dispensers into supersonic preheated gas flow and applying the powder composition onto the surface of a product. With using the first dispenser, reinforcing nonmetallic superdispersed Al2O3 particles of fraction 0.1 to 1.0 mcm are introduced into the supersonic preheated gas flow that is followed with processing the product surface to form a juvenile surface. Then with the second dispenser, an interlayer of powder from one or several metals of group: Al, Cu, Ni, Zn, Sn, Ti, Pb, Co and/or related alloys. Then functional-gradient coating layer is applied simultaneously from two dispensers to produce a coating of Al2O3 content increasing from said interlayer to the surface within 0.1 to 30 vl %.
EFFECT: making nanostructured coatings of high wear-resistance.
4 cl, 3 dwg, 1 tbl, 1 ex
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