METHOD FOR OBTAINING A WEAR-RESISTANT COATING BASED ON A QUASI-CRYSTALLINE ALLOY OF THE Al-Cu-Fe SYSTEM Russian patent published in 2022 - IPC C23C28/00 C21D1/78 B22F3/23 

FIELD: protective coatings.

SUBSTANCE: invention relates to methods for surface hardening of metals and can be used in the manufacture of parts operating under conditions of wear and alternating loads. A method for obtaining a wear-resistant coating based on a quasi-crystalline single-phase alloy of the Al-Cu-Fe system on the surface of a steel part includes the preparation of a metal-ceramic slip, applying the first coating layer to the surface of a steel part in the form of a metal-ceramic slip suspended in an anticorrosive two-component polyurethane 20s (UV) base coat. The metal-ceramic slip contains powdered refractory materials, wt. %: zirconium carbonitride 15-20, tungsten carbide 25-35, an electrically conductive material in the form of iron or chromium powder, or nickel, or their alloys 35-50 with a particle size of 30-65 nm, two-component base coat polyurethane 20s (UV) being the rest, and a universal diluent, which is the P-5 solvent, providing the necessary working consistency to the applied slip. Then the mentioned slip is dried and polymerized, the applied ceramic-metal slip and the surface layer of the part are heated to melting using gas-flame or argon arc treatment with a non-melting electrode, exposure and cooling. Then a second coating layer is applied based on a powdered refractory material in the form of a quasi-crystalline single-phase alloy of the Al-Cu-Fe system, it is dried, polymerized and the steel part is heated to initiate the SHS reaction to a temperature in the range of 550-800°C with exposure at a temperature of 800°C for 1.5-2.0 hours, cooling and tempering at a temperature of 580-600°C.

EFFECT: creation of a wear-resistant coating based on the Al₆₅Cu₂₂Fe₁₃ quasicrystal on the surface of a steel part for working conditions in an abrasive medium or in an abrasive-impact medium is provided.

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