It was in 2014 that the company unveiled a new treatment family, known as NanoDeCo® , derived from ALD technology.
ALD (or Atomic Layer Deposition) is a gaseous phase chemical deposition process used to obtain low-stress layers.
As a business, POSITIVE COATING has pulled off the feat of transposing ALD technology, initially used in the semi-conductors industry for its diffusion barrier properties, by adapting it to the watchmaking sector for its decorative and anticorrosive properties.
The advantage of this technology lies in the fact that these treatments are perfectly compliant and uniformly coated, with a precision of around one nanometre. So these layers meet the highest requirements of micro-technology.
These treatments stand out for a wide range of colors and shades, perfectly repeatable and applicable to parts with complex 3D geometries.
Control of the coated layers to a nanometric scale results in a tiny thickness allowance, in order to conserve the mechanical decoration surface.
ALD treatments are reversible processes, despite the very high chemical stability, and guarantee excellent protection against corrosion of metal substrates.
The deposition temperature is between 100 and 300 °C.
HEAVY METAL (TUNGSTEN)