METHOD FOR PRODUCING COATING ON INNER SURFACE OF HOLLOW PART USING ELECTRICAL EXPLOSION OF CONDUCTOR Russian patent published in 2023 - IPC C23C4/126 C23C4/08 

FIELD: coatings.

SUBSTANCE: invention relates to a method for producing a coating on the inner surface of a hollow part using an electrical explosion of a conductor. Ultrasonic treatment of the inner surface of the hollow part is carried out with a waveguide tip through an abrasive suspension at a frequency of 25-26 kHz, an oscillation amplitude of 20-60 mcm and a linear speed of movement of the waveguide tip of 0.5⋅10^-3-1⋅10^-3 m/min, followed by degreasing and etching of the processed inner surface of the hollow part. An electric explosion of the conductor is carried out with the products of the electric explosion of the conductor being applied in the form of a layer of the resulting coating on the inner surface of the hollow part. The said layer is subsequently processed by surface-plastic deformation by running in a deforming element with simultaneous passing through the zone of contact of the deforming element with the treated inner surface of the hollow part of a pulsed electric current with a density of 1⋅10⁵-3⋅10⁵ A/cm² and duration 1⋅10^-5-2⋅10^-5 s.

EFFECT: increased adhesive strength between the coating and the inner surface of the hollow part.

1 cl, 2 tbl, 1 ex