Plasma spraying uses a plasma forming gas (usually either argon or nitrogen) as both the heat source and the propelling agent for the coating. A high-voltage arc struck between. An anode and cathode within a specially designed spray gun excites the plasma gas by lonization. The excited gas is forced through a convergent/drive gent nozzle.
Powdered spray materials is injected into the hot plasma stream, in which it is melted and projected at high velocities onto a prepared substrate. Thge resulted coating are strongly bonded and have exceptionally high integrity.
