APS (Air Plasma Spray) Coating

Plasma coatings are made by heating and accelerating powders in a high-temperature plasma jet, which is projected onto the surface of the part.

The plasma jet is produced in a special torch. An electric arc is formed between the cathode and the anode whose energy is used to produce the dissociation and ionization of the gases that form the plasma. The constriction of the plasma arc due to the strong expansion of the gas causes an increase in the current density and therefore in the temperature. The plasma exits the nozzle at high speed and is seen as a very bright jet.

The powder is introduced into the plasma jet as it exits the torch. The powder particles are melted in the plasma jet and accelerated towards the part to be coated, where they cool, solidify and mechanically and metallurgically adhere to the substrate.

Advantages

  • Wear protection
  • Corrosion and oxidation protection
  • Thermal insulation of surfaces
  • Electrical conductivity or electrical resistivity
  • Dimensional restoration of parts
  • Realization of abradable coatings
  • Adhesive coatings (bond-coat) for other coatings
  • An affordable way to deliver superior performance to a surface

Applications

Aerospace

  • Jet engine components
  • Combustion chambers

Energy (Gas turbines)

  • Combustion chambers
  • Nozzles
  • Injectors
  • Burners
  • Liner and Cap Liner
  • Transition pieces
  • Cooling pipes
  • Sectors of stator rings

Materials

  • Stainless steels (austenitic and martensitic)
  • Nickel / Cobalt based super alloys
  • Titanium alloys
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