Atmospheric Plasmadynamic System in Thermal Spraying and Hardening

This paper presents a new method for producing high-energy pulsed plasma flows with a dc air torch and demonstrates its use in surface hardening and thermal spraying applications. The method employs electromagnetic plasmadynamics and is capable of generating high-frequency pulsed-periodic plasmas at atmospheric and high pressure. Plasma flow velocities of 3-5 x 103 m/s at temperatures of 15 x 103 K have been achieved.