• Plasma generator with plasma

Coating by plasma polymerization with atmospheric-pressure plasma

1. How does coating with the atmospheric-pressure plasma jet method work?

For coating with the plasma jet method (atmospheric plasma), monomers are fed by gaseous carrier gas directly into the plasma jet. The monomer is therefore focused on the surface by means of plasma and polymerized.

PlasmaBeam design

2. Which coatings can be produced with atmospheric plasma and which monomers are used for this?

Atmospheric plasma is principally suitable for producing hydrophilic, adhesion-promoting and corrosion preventive coatings.

As monomers, silicon and carbon-containing substances are used. These include, for example, various acrylates and common silicon-containing monomers of type HMDSO.

3. Which monomers may not be used?

Due to their strong toxic effects, no halogen-containing gases and monomers may be used with atmospheric plasma (F2, CL2, Br2, I).

4. Which carrier gases are used for atmospheric plasma coating?

Typically the following gases are used:

  • Helium (He)
  • Argon (Ar)
  • Nitrogen (N2)

5. Which coating thicknesses can be achieved and how can they be measured?

The layer thicknesses are up to several hundred nanometres. A so-called profilometer (e.g. Dektak) is used as a reliable method for the measurement of such thin coatings.

6. Which applications are possible?

You can find more information under Applications.