External part comprising a stack of interference layers deposited on a face comprising at least 50% by mass of titanium
AssigneeThe Swatch Group Research and Development Ltd
InventorsCamille HALLER, Loic CURCHOD, Marie BAUDOZ, Giovanni POLY
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Abstract
An external part (10) used in horology, jewellery or fine jewellery, including a substrate (100) having a support face (101) made of a material including at least 50% by mass of titanium, on which is deposited a semi-transparent thin-film dielectric coating including at least three layers, including a base layer (111) made of TiO2 overlying the support face (101), a terminal layer (112) made of TiO2 and an intermediate layer (113) made of Al2O3 and deposited between the base layer (111) and the terminal layer (112).
Claims6
An external part used in horology, jewellery or fine jewellery, characterised in that it comprises a substrate having a support face made of a material comprising at least 50% by mass of titanium, on which is deposited a semi-transparent thin-film dielectric coating comprising at least three layers, including a base layer made of TiO2 overlying the support face, a terminal layer made of TiO2 and an intermediate layer made of Al2O3 and deposited between the base layer and the terminal layer.
Dependencies are inferred from the claim text.