This form of thermal spraying uses wire material as a feed stock. An electric arc is used as the heat source. As the wires are fed towards each other, an electric arc is struck between the wires creating a temperature of around 4,000°C.
This temperature causes the tips of the wire to melt and once molten state, a stream of compressed air or inert gas is used to atomise and accelerate the feed metal towards the substrate.
|Heat Source||Electric Arc|
|Flame Temperature (°C)||3600 to 4000|
|Particle Velocity (m/sec)||< 300|
|Porosity (%)||10 to 15|
|Coating Adhesion (MPa)||28 to 42|