Though the concept of corona treatment and plasma surface treatment are similar, which makes the difference in their name.?
physical phenomena involved in corona discharge treatment (see photo it's by frensh language) :
- Neutralization air.
- Piezoelectric phenomenon.
- Surface conduction.
- samples polarization.
- Injection of charges.
Interaction plasma surface in plasma treatment (see the second photo):
- Surface functionalization (graft).
-surface cleaning.
- etching or ablation.
- reticulation.
- deposition of thin films.
and finaly, you say in question plasma surface treatment, so you can treat a surface but in corona discharge treatment you can treat only a point.
Ilyes has been very clear. If you would like to have also an experimental feeling typically corona are very small and short arcs causing high thermal input in very small local areas, some substrates like paper or textile can burns under prolonged or high power treatments. On the other side plasma (glow discharge typically DBD) ensure a more homogeneous and let's say "gentle" treatment. Last but not least corona equipments are more cheaper.
plasma surface treatment is done in various ways, one of which corona discharge treatment.
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