Component, in particular a timepiece component, which has at least one porous core that includes a first material or based on a first material, having a relative density less than or equal to 80%, or less than or equal to 60%, or less than or equal to 50%, of the relative density of the first material in solid form, the at least one porous core having at least one area for which its porosity at its surface is lower than its porosity away from its surface.

A multicolour cermet and/or ceramic article, and in particular a bezel of a timepiece, made by a method for injecting at least two materials of distinct colours, said article comprising a relief decoration of a colour different from the rest of the article, said decoration being made by laser ablation after injection of the two materials.

The invention relates to a method of manufacturing of a watch component, comprising the steps consisting in: (10) forming a blank (200E1), particularly by injection, including at least one base surface (210) and at least one projecting portion (220) projecting from the base surface (210), (20) forming at least one coating layer (250) covering at least a part of the base surface (210) and/or over at least a part of the projecting portion (220), (30) removing by laser ablation at least a part of said at least one coating layer (250). (40) texturing by laser processing at least a part of the base surface (210) and/or at least a part of the projecting portion (220), and/or at least a part of the at least one coating layer (250).

A timepiece member according to an aspect of the present disclosure includes: a base material having translucency, in which the base material includes a pattern portion including a plurality of display regions having different front surface states and exhibiting different appearances or textures, and the pattern portion exhibiting a predetermined pattern by a set of the plurality of display regions, and a color imparting layer is provided on a front surface of the base material so as to extend over the plurality of display regions.

A watch component includes a base material, a protective film formed on a surface of the base material by wet plating, and a decorative film formed on a surface of the protective film by dry plating, wherein the decorative film is a multilayer film in which a plurality of layers including a first layer in contact with the protective film are stacked, and a main material constituting the first layer is the same as a main material constituting the protective film.

A timepiece component includes a core made of material suitable for electroforming, containing nickel-phosphorus or made of nickel-phosphorus, which core is, at least locally, coated with a surface layer of gold or gold alloy, to improve its tribological behaviour in areas including the surface layer of gold or gold alloy. The component is made by a fabrication method that includes the steps consisting in preparing a composition suitable for creating a solid core by a LIGA or electroforming method; shaping the solid core by a LIGA or electroforming method; coating the solid core, at least locally in areas subject to friction, with a gold or gold alloy surface layer.

A method for manufacturing a micromechanical timepiece part starting from a silicon-based substrate, including, forming pores on the surface of at least one part of a surface of said silicon-based substrate of a determined depth, entirely filling the pores with a material chosen from diamond, diamond-like carbon, silicon oxide, silicon nitride, ceramics, polymers and mixtures thereof, in order to form, in the pores, a layer of the material of a thickness at least equal to the depth of the pores. A micromechanical timepiece part including a silicon-based substrate which has, on the surface of at least one part of a surface of the silicon-based substrate, pores of a determined depth, the pores being filled entirely with a layer of a material chosen from diamond, diamond-like carbon, silicon oxide, silicon nitride, ceramics, polymers and mixtures thereof, of a thickness at least equal to the depth of the pores.

Disclosed is a gear assembly, including: a shaft with a gearwheel; a tube into which the shaft is inserted; and a washer interposed between the shaft and the tube in an axial direction of the shaft, wherein the washer has a higher hardness than the tube.

Disclosed is a gear assembly, including: a shaft; a spur gear that is made of a material having a crystal lattice plane and through which the shaft is inserted; and a fixing member that fixes the spur gear to the shaft.

A method of manufacturing a watch component according to the present disclosure is a method of manufacturing a watch component that includes a decorative region at a front surface thereof. The method includes sequentially irradiating the decorative region with laser light to draw, in a superimposed manner, a plurality of decorative patterns constituted by a plurality of lines. At least one of the decorative patterns is constituted by the plurality of lines arranged at intervals in a range of 80% to 200% of a spot diameter of the laser light, at least one of the plurality of lines including a curved portion.