Electrostatic spray-assisted vapour deposition

Electrostatic spray-assisted vapour deposition is a technique to deposit both thin and thick layers of a coating onto various substrates. In simple terms chemical precursors are sprayed across an electrostatic field towards a heated substrate, the chemicals undergo a controlled chemical reaction and are deposited on the substrate as the required coating. Electrostatic spraying techniques were developed in the 1950s for the spraying of ionised particles on to charged or heated substrates.
ESAVD is used for many applications in many markets including:

Thermal barrier coatings for jet engine turbine blades
Various thin layers in the manufacture of flat panel displays and photovoltaic panels, CIGS and CZTS-based thin-film solar cells.
Electronic components
Biomedical coatings
Glass coatings
Corrosion protection coatings

The process has advantages over other techniques for layer deposition in that it does not require the use of any vacuum, electron beam or plasma so reduces the manufacturing costs. It also uses less power and raw materials making it more environmentally friendly. Also the use of the electrostatic field means that the process can coat complex 3D parts easily.