METHOD FOR PLASMA DEPOSITION OF NANOSTRUCTURED HEAT SHIELD Russian patent published in 2019 - IPC B82B3/00 C23C14/20 C23C4/12 C23C24/08 

FIELD: nanotechnologies.

SUBSTANCE: invention relates to a method for the plasma deposition of a nanostructured heat shield. Conical nozzle is previously installed on the cut of the supersonic plasma torch nozzle, the inner surface of which forms with the inner surface of the nozzle fracture, which allows, after a break, to establish the plasma pressure with the sprayed substance in the wall part of the nozzle equal to the pressure in the vacuum chamber. Plasma torch and the substrate is installed in the chamber with reduced pressure. Dynamic vacuum in the chamber is maintained, the plasma gas and the powder of the sprayed substance is fed into the plasma torch and the substance is sprayed by a supersonic plasma flow with the formation of molten particles of micron level and vapor phase of the sprayed substance. Then, nanoparticles formed in the wall part of the nozzle and particles of micron level of the sprayed substance are deposited onto the substrate. Substrate is moved in such a way that the layers of nanoparticles and particles of micron level of the sprayed substance overlap each other.

EFFECT: technical result consists in simultaneously increasing the adhesive and cohesive strength of the shield and increasing heat resistance thereof.

1 cl, 5 dwg