DETERMINATION OF ENERGY PARAMETERS OF Ni+Al2O3 POWDER PARTICLES IN A SUPERSONIC NOZZLE DURING COLD GAS-DYNAMIC SPRAYING USING THE ANALYTICAL METHOD

Purpose. To calculate the temperature and velocity of nickel aluminum oxide particles in supersonic flow low-pressure cold gas-dynamic spraying nozzle. investigate effect gas parameters at nozzle inlet, particular pressure, on outlet.
 Research methods. The calculation temperature-velocity characteristics powder is performed after determining channel using well known dependencies. initial data for are following: geometry nozzle, pressure (air) inlet. density material from which obtained, as their diameter, were taken into account energy parameters. Nickel with a diameter 25 µm 22 used.
 Results. Based calculations results, graphs changes velocities temperatures investigated powders, working gas, developed. dependences exit range values inlet 300 to 600 C° 0.6 1.0 MPa also developed.
 Scientific novelty. influence wide during shown.
 Practical value. obtained results can be used determine rational development technological processes deposition protective restorative coatings Ni+Al2O3 mixture.