Living Finish Vs. PVD
By revivalinte88258592, Jun 2 2017 03:44PM
A living finish is what occurs when you have any metal (except stainless steel) that is not lacquered or protected by any other process. The finish will continually evolve through exposure to the elements, also called an oxidation process, which varies in different metals. In Copper you may see a green patina, or verdi gris. In the case of Oil-Rubbed Bronze, a lightening effect occurs in the areas where it comes in contact with the human hand, such as the faucet handle or a door knob. This is precisely its charm, the fact that it will acquire a “broken in” appearance within a relatively short period of time.
In the mid 1990’s the PVD (physical vapor deposition) technology was developed. PVD is a high tech process where the finish is applied inside a vacuum chamber; a base solid material is introduced into the chamber and vaporized to an atomic level. It then attaches itself to target surface in a thin film and becomes a solid material again. The difference between regular electroplating and the PVD process is that once the substrate becomes solid it actually becomes a part of the target surface as opposed to just a coating. In other words, if the surface is scratched it would not break the surface but when examined microscopically it appears to be dented. This process allows some plumbing and door hardware manufacturers to be able to offer a lifetime warranty.