Physical Vapour deposition (PVD) denotes the process whereby a solid material such as Titanium, is vaporised within a vacuum chamber to create a plasma cloud. This cloud then deposits a thin even coat of material onto the products within the chamber. The use of different Titanium compounds and the introduction of various gases during this process results in different colours of coating.
Often described as scratch resistant, the resultant finish is extremely robust, much harder than paint or anodising finishes. This hardness lends itself to many applications, indeed it has been used on high end watches for many years before crossing over into architectural ironmongery.
The real beauty of PVD is it’s thinness which allows the underlying texture of the base material to show through, creating a truly metallic coloured finish. In most cases the PVD layer is only a few microns thick, so surface treatments such as sateening and shot blasting are perfectly visible.
PVD finishes also do not tarnish, this is particularly appealing to the bronze and copper finishes, where traditionally these finishes would require extensive maintenance or specialist applied coatings to avoid patination.
Franchi have been refining this process for a number of years, to the point now where a fully coordinated PVD package of ironmongery can be offered on projects.