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After developing long researches and experimentations, Zannetti released a collection displaying his first models with watchcases completely painted black. For this reason he used the PECVD technique (Plasma Enhanced Chemical Vapour Deposition), which protects the steel from corrosion and wear caused by chemical or atmospheric agents. Not so long ago, the treatments applied on steel were galvanic, painting and chemical or heat-treatments (PVD) in order to enhance or modify the features of the watch cases and obtain smoothness and abherence: Zannetti has instead decided to use the new PECV technology, that allows to synthetize a film of amorphous hydrogenate silicon on the surface of the metal with a high electronic quality. Practically speaking, it is a deposition in the substrate of the metal itself (therefore not only on its surface) that remarkably enhances its technical features, without modifying its morphological features (butter finishing, polishing, ecc.) and grants contemporarily a functional and ornamental coating. Besides the PECVD deposition has a thickness of a few micron and the process takes place at an ambient temperature therefore there are no dimensional variations or distortions.

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