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公开(公告)号：US11685987B2
公开(公告)日：2023-06-27
申请号：US17081375
申请日：2020-10-27
Inventor： Christian Manasterski , Marion Gstalter
CPC classification number: C23C14/067 , C23C14/021 , C23C14/34 , C23C14/5813
Abstract: A layer of lanthanum boride of stoichiometry LaBx where x is between 9 and 12 is deposited on substrate, for example a stainless steel watch dial, and subsequently treated with a laser, such that the portion(s) of the layer treated with the laser change colour according to the laser power. This produces multicoloured surfaces having high resistance to corrosion and abrasion. The layer of LaBx is deposited by PVD and by cathode sputtering, using a LaB6 target of purple-violet colour, such that the colour of the deposited layer differs from the colour of the target. The laser treatment at specific powers changes the stoichiometry of the layer in the treatment portions, such that the colour of these portions changes according to the stoichiometry obtained. At higher powers, the laser will remove the layer of LaBx. Thus the colour of the treated portions is determined by the material of the substrate.
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公开(公告)号：US12163217B2
公开(公告)日：2024-12-10
申请号：US17278139
申请日：2019-09-13
Inventor： Christian Manasterski , Vladislav Spassov , Cédric Faure
IPC: C23C16/40 , C22C5/08 , C23C16/455 , C25D5/00 , C25D5/10
Abstract: A substrate includes a final silver-plated surface protected against silver tarnishing by a protective coat having a thickness between 1 nm and 200 nm, the protective coat includes a first coat of Al2O3 deposited on said final silver-plated surface and having a thickness between 0.5 nm and 100 nm, and on the first coat of Al2O3, a second coat of TiO2 having a thickness between 0.5 nm and 100 nm, the substrate including a coat of a silver and copper alloy comprising between 0.1% and 10% by weight of copper with respect to the total weight of the alloy, forming said final silver-plated surface, said coat of a silver and copper alloy having a thickness between 1000 nm and 3000 nm. Embodiments also relate to a method for manufacturing such a substrate.
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公开(公告)号：US11345993B2
公开(公告)日：2022-05-31
申请号：US16572203
申请日：2019-09-16
Inventor： Christian Manasterski , Vladislav Spassov , Cedric Faure
Abstract: A method is described for protecting a silver surface against tarnishing. This involves depositing a layer of a silver-copper alloy on a substrate, which may be a silver substrate. The alloy comprises between 0.1 wt % and 10 wt % of copper relative to the total weight of the alloy. At least one layer of a metal oxide or a nitride having a thickness in a range of 1 nm to 200 nm is deposited on the alloy to protect against tarnishing. The presence of copper in the silver-copper alloy enhances the alloy's adhesion without altering the silver color.
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公开(公告)号：US11208715B2
公开(公告)日：2021-12-28
申请号：US15452759
申请日：2017-03-08
Inventor： Christian Manasterski , Cedric Faure , Simon Springer , Gerard Rossier
IPC: C23C14/02 , C23C14/14 , C23C14/16 , C23C14/56 , C23C14/58 , C23C28/02 , C25D7/00 , G04B13/02 , G04B19/04 , G04B19/06 , G04B29/02 , G04B37/22 , G04B47/04 , G04D3/00 , C23C14/34
Abstract: The invention relates to a method for decorating a timepiece component comprising: a) a step of preparation of the timepiece component optionally comprising a first step of depositing a first material on the timepiece component to form a first sub-layer, b) a second step of depositing a second material on the timepiece component obtained in step a) to form a second sub-layer, c) a colouring step comprising the deposition of a third coloured material on the timepiece component obtained in step b) to form a coloured external decorative layer, According to the invention, at least step b) and step c) are achieved by a physical vapour deposition method.
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