The invention concerns a timepiece component containing a high-entropy alloy, the high-entropy alloy containing between 4 and 13 main alloying elements forming a single solid solution, the high-entropy alloy having a concentration of each main alloying element comprised between 1 and 55 at. %.

The invention relates to a compacted and densified metal material having one or more phases formed of an agglomerate of grains, the cohesion of the material being provided by bridges formed between grains, said material having a relative density higher than or equal to 95% and preferably higher than or equal to 98%.

The invention concerns a timepiece component containing a high-entropy alloy, the high-entropy alloy containing between 4 and 13 main alloying elements forming a single solid solution, the high-entropy alloy having a concentration of each main alloying element comprised between 1 and 55 at. %.

A flexible timepiece component, in particular for an oscillator mechanism or for a barrel of a horological movement, the component extending along a main plane (P) and including at least a part made of a composite material (1), the composite material (1) including a matrix (2) and a multitude of nanowires (3) distributed in the matrix (2), the nanowires (3) being juxtaposed, the matrix (2) including a material (4) for filling the interstices between the nanowires (3) to join them to each other, each nanowire (3) forming a solid one-piece tube, the nanowires (3) being disposed substantially parallel to an axis (A) substantially perpendicular to the main plane (P) of the component (6, 7).

A method for production of a horology assembly of two components, comprising (i) supplying a first component (2) being a spring, and comprising at least one element made of elastic material provided with a tongue (20); supplying a second component (3) provided with at least one cut-out or opening (31, 32); permanently assembling the two components. The two components cooperate by means of an obstacle such as to create the assembly, and in particular the tongue is accommodated in the at least one cut-out or opening (31, 32).

A method for producing a timepiece spring includes the following steps: producing a piece based on silicon, having the desired shape of the timepiece spring; thermally oxidising the piece; deoxidising the piece; annealing the piece in a reducing atmosphere; forming a silicon oxide layer on the piece.

A method for production of a horology assembly of two components, includes (i) supplying a first component (2) being a spring, and including at least one element made of elastic material provided with a tongue (20); supplying a second component (3) provided with at least one cut-out or opening (31, 32); permanently assembling the two components. The two components cooperate by an obstacle to create the assembly, and in particular the tongue is accommodated in the at least one cut-out or opening (31, 32).

An object of the present invention is to provide an electroformed part favorable for an assembly part of a timepiece or the like and a timepiece using the same. The present invention relates to an electroformed part, which is an electroformed part composed of a nickel-iron alloy constituted by nickel, iron, and unavoidable impurities, containing iron at 5 to 25% by mass, and having a roughly layered form portion in which a stacked form portion having an inclined iron content in a thickness direction is repeatedly stacked a plurality of times. It is preferred that the stacked portion is constituted by crystal grains having an average grain diameter of 50 nm or less.

A component intended to be in friction contact with another component, the component being coated with an electrically conductive layer in one piece, at least partially covering every surface of the component, the friction occurring on at least one of these surfaces, called the functional surface, the functional surface being surrounded by a plurality of side surfaces, the component having on its functional surface a texture formed of a succession of troughs coated with the electrically conductive layer, the troughs each extending between two side surfaces such that the electrically conductive layer remains in one piece over the component despite the wear caused by friction on the functional surface. The invention also relates to the method for manufacturing the component by the DRIE (deep reactive ion etching) process, wherein surface defects on the sides machined by the DRIE process are used to form the troughs.

A timepiece component includes a first silicon-based or ceramic-based part, and a second metal-based part. One surface of the first part is directly welded using laser-type electromagnetic radiation onto a surface of the second part in order to secure the parts without addition of material. A method for fabrication of a timepiece component for a timepiece includes forming a first silicon-based or ceramic-based part and a second metal-based part, mounting a surface of the first part on a surface of the second part, and welding, using laser-type electromagnetic radiation, the surface of the first part mounted directly on the surface of the second part, in order to secure the parts to each other without addition of material.