What is Low-Pressure Spraying?
Low-pressure spraying is plasma spraying performed in a controlled inactive gas atmosphere.
As the temperature of base material in preheating and spraying rises, the particle speed increases very much, so the film density becomes higher and the binding strength increased. As the temperatures of both the base material and the sprayed particles are very high, the melted particles in low-pressure atmosphere do not solidify rapidly on the base material. The melting condition of the particles is long, compared with that in atmospheric spraying, so that the particles can be sprayed on any shape of base material while leaving no space.