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Impulse coaxial magneto-plasma accelerator supersonic stream of electrodigit plasma. With a barrel length of up to 250 mm, the discharge is accelerated by a current 100-150 kA to a velocity of 3-5 km/s at atmospheric pressure. Up to 10 g of metal is taken out of a barrel. Researches on a raster electronic microscope have shown: uniformity of a covering, absence of pores and a dense interface from a surface of a substrate. The formation of a boundary layer of mutual mixture of materials of a covering and substrate by thickness 50-150 micron is established. It causes an extremely high adhesion of the covering from stainless steel on duralumin. A great number of jet inclusions of dense substance extending in thickness of a substrate starting from 150 microns up to 500 microns have been found out. This layer has high nanohardness. Increase of surface wear resistance compared with the others. The detailed surface processing of aluminium alloys by a high-velocity stream of electrodigit plasma of stainless steel structure provides an essential increase of mechanical properties. The received covering can carry out anticorrosive functions and functions of thermal barrier.

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