The Aerosol Deposition is a new coating method based on the mechanisms of Room Temperature Impact Consolidation. A special feature and a clear advantage of Aerosol Deposition is that the coating of all material types (ceramics and metals) on all substrate types (metal, glass, ceramics and plastics) is done at room temperature and in low vacuum.
Learn more about the unique advantages of aerosol deposition
What is Aerosol Deposition?
How does the Aerosol Deposition work?
µm sized particles of the coating material are transported via carrier gas into a coating chamber. There, the particles are accelerated to several 100 m/s and sprayed onto the surface. Particles fracture due to high kinetic energy into fragments and form a layer.
The layer thicknesses formed by Aerosol Deposition are in the range of 1-70 µm.
What are the properties of the coatings applied by Aerosol Deposition?
The layers themselves are very dense and compact, thus showing a high resistance against chemical and mechanical abrasion. Self-evident applications are anti-wear and anti-corrosion protective finishing. Furthermore, films by Aerosol Deposition show extremely good adhesion, thus enabling lasting material combinations that were not possible that easily before. Film properties are usually close to the bulk material properties, e.g. where the electric isolation is concerned.
Comparison of different coating technologies
Compared with all other coating technologies, Aerosol Deposition can be done at low temperature. This is ideal for materials and substrates that are not temperature resistant and enables completely new combinations of coating and substrate.
|Aerosol Deposition||CVD/PVD||Thermal Spray||Cold Spray|
|Material Choice||metals, ceramics, composites||metals, ceramics, composites||metals, ceramics, composites||metals, cermets|
|Deposition Rate||high||low||high||very high|
|Temperature||low / room temperature||medium / high||high||medium (~ 300 °C)|
|Vacuum||low vacuum||ultra-high vaccum||atmospheric||atmospheric|
|Scale-Up||medium parts||difficult||large parts||large parts|
|Thickness||1 – 70 µm||~ 1 µm||> 50 µm||> 50 µm|
|Density||very dense||very dense||porous||porous|
CVD: limited (hot)
|limited (very hot)||limited (hot)|
|Costs (TCO)||low||high||medium / low||medium|