Processes: Silane
Silane coating: in an immersion process, the silanes are hydrolysed so that Si(OH) groups form which can produce good adhesion to a surface. The treatment requires a clean surface which is normally achieved with an alkaline cleaning. Normally, for corrosion protection under paint or rubber-to-metal compounds, layer thicknesses from 50 to 100 nm are obtained. The most important application of the silane surfaces on aluminium are the pre-treatments before painting, powder coating and bonding as well as adhesives in rubber-to-metal compounds.
This surface is becoming very popular in vehicle construction due to the EU old vehicle regulation.
