Abstract: An external part (10) including a substrate (100) having a support face (101) made of chromium carbide CrxCy in which the complex refractive index at a wavelength of 550 nm has a real part n>1 and an imaginary part k<1.5, on which is deposited a thin-film dielectric coating (110) formed by at least one alternation of layers made of TiO2 and Al2O3 and comprising a terminal layer (111) made of TiO2 and a base layer (112) overlying the support face (101) made of TiO2 or of Al2O3.

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).

Abstract: An external part (10) used in horology, jewellery or fine jewellery, characterised in that it includes a substrate (100) having a support face (101) made of a material with at least 50% by mass of aluminium, on which is deposited a semi-transparent thin-film dielectric coating (110) having at least two layers, including a base layer (111) made of Al2O3 overlying the support face (101), and a terminal layer (112) made of TiO2.

Abstract: An external part (10) for use in horology, jewellery or fine jewellery, including a substrate (100) having a metallic face (101) made of a noble metal or of a noble metal alloy in which the complex refractive index at a wavelength of 550 nm has a real part n<1 and an imaginary part 2<k<3, on which is deposited a stack of thin-film dielectric coatings (110), each consisting of a thin atomic film, formed by at least one alternation of layers made of TiO2 and Al2O3 and comprising a terminal layer (111) made of TiO2 and a base layer (112) resting on the metallic face (101) made of TiO2 or of Al2O3.

Abstract: A method for laser treatment of a horology component (10) including an operation for treating a surface of the horology component (10) inscribed in an orthonormal XYZ coordinate system, in which a laser (20) is controlled to emit a laser beam (21) and to move a focal point (210) of the laser beam (21) in order to impact a surface to be treated (100) on the horology component (10) in response to control instructions from a computer program, in order to follow a scanning strategy including a plurality of paths (31), each having a component in a Z direction and a component in at least one of the X or Y directions, the scanning strategy being defined such that the energy density emitted by the laser beam (21) varies over the entire surface to be treated (100).

Abstract: A method for decorating an external part (10) for horology, jewellery or fashion accessories, including the steps of: forming a first interference (110) layer of titanium oxide over the entire decorative face (101) of a titanium substrate (100) by anodising the decorative face (101) at a voltage V1; machining a portion of the first interference layer (110) so as to form at least one opening (111) leading to a portion of the decorative face (101); and forming a second interference layer (120) of titanium oxide by anodising the portion at a voltage V2 lower than voltage V1.

Abstract: A method for manufacturing a dial (2) of a watch (1) including a visible face (11) having a small surface, the face (11) comprising a three-dimensional representation (3) of a topographic map of the landscape, the method comprising the following steps of: producing (20) a blank (12) of the dial (2) comprising an upper face (13) provided with a three-dimensional structure (5) relating to the three-dimensional representation (3) of the landscape, the production step (20) comprising a sub-step (22) of generating topographic data for constructing the three-dimensional structure (5) in the upper face (13); treating (29) a surface (14) of the three-dimensional structure (5) of the upper face (13) of the blank (12) during which at least one visual feature of the surface (14) is modified in anticipation of obtaining the three-dimensional representation (3); and finishing (35) the blank (12) to obtain the dial (2).

Abstract: A method for manufacturing appliques on a dial for a timepiece.

Abstract: A method for plasma treating a target surface of a part, including: obtaining the target surface on the part; placing the part in a chamber of a plasma generator; evacuating the chamber to a pressure of between 10-6 and 10 mbar; injecting a suitable gas into the chamber until a pressure in the chamber of between 10-4 and 102 mbar is reached; generating an electric current discharge within the chamber, via an electric generator, in order to generate a plasma; exposing the target surface of the part to the plasma for a predefined period of time depending on the power of the electric current discharge, on the gas injected into the chamber and on the material of the target surface, so as to deteriorate the surface condition of the target surface in order to increase the roughness thereof to make the target surface mat or more mat.

Abstract: A method for manufacturing appliques on a dial for a timepiece.