Abstract: A method for manufacturing an alloy formed from a boride of a precious metal, may involve reacting a source of the precious metal with a source of boron in a salt or a mixture of salts in the molten state. An alloy formed from a boride of a precious metal may include crystalline nanoparticles of MxBy with M being a precious metal, distributed in an amorphous matrix of B or in an amorphous matrix of B and of MzBa.

Abstract: A method for surface treatment of a metal material in a powder state is provided, the method including obtaining a powder formed from a plurality of particles of the metal material to be treated; and subjecting the powder to an ion implantation process by directing a beam of singly-charged or multi-charged ions towards an outer surface of the particles, the beam being produced by a source of singly-charged or multi-charged ions, whereby the particles have an overall spherical shape with a radius (R). There is also provided a material in a powder state formed from a plurality of particles having a ceramic outer layer and a metal core, the particles having an overall spherical shape.

Abstract: A component and method of making the internal parts or movement for a timepiece or piece of jewelry that includes a substrate partially coated with a black layer and decorated with at least one stone, said black layer including carbon nanotubes or aluminum oxide, said substrate being at least devoid of the black layer on the portion facing the stone.

Abstract: A multilayered interference pigment containing, in succession: a metal core in the form of a flake, the metal core containing a material selected from gold, silver, palladium, rhodium, ruthenium, platinum, osmium, iridium and an alloy thereof; a first layer of transparent dielectric material; and a second discontinuous metal layer making it possible to both reflect a portion of the light beam and to transmit another portion of this beam onto the metal core.

Abstract: A method for surface treatment of a metal material in a powder state is provided, the method including obtaining a powder formed from a plurality of particles of the metal material to be treated; and subjecting the powder to an ion implantation process by directing a beam of singly-charged or multi-charged ions towards an outer surface of the particles, the beam being produced by a source of singly-charged or multi-charged ions, whereby the particles have an overall spherical shape with a radius (R). There is also provided a material in a powder state formed from a plurality of particles having a ceramic outer layer and a metal core, the particles having an overall spherical shape.

Abstract: A method for manufacturing a part by alloying a precious metal with boron, wherein: a quantity of precious metal reduced to powder form is provided; a quantity of a nano-structured micrometric boron powder is provided; the precious metal powder is mixed with the nano-structured micrometric boron powder to obtain a mixture; the mixture is compacted by applying a uniaxial pressure; the mixture is subjected to a spark plasma sintering or flash sintering treatment, or to a hot isostatic pressing (HIP) treatment, to obtain an ingot of a precious metal/boron alloy, and the ingot is machined to obtain the part, or the ingot is reduced to powder form by a micronisation treatment and the powder is treated to obtain the part. Additionally, a gold/boron alloy.

Abstract: A method for laser additive manufacturing of a mechanical part includes providing a laser beam the operation of which will be controlled by a computer into which is introduced a CAD computer file which is cut into one or more strata which, once superimposed, allow to form the structure of the desired mechanical part, disposing a substrate in a manufacturing enclosure wherein an atmosphere of a neutral gas is created, depositing on the substrate at least a first layer of a powder of a first metallic material to be melted, levelling the first layer, subjecting by means of the laser beam the first layer to a selective melting step, if necessary, depositing on the substrate a second layer, levelling the second layer and subjecting this second layer to a step of selective melting, removing the excess material and cleaning the assembly and subjecting the part to finishing operations.

Abstract: A component for the internal parts or the movement for a timepiece or a piece of jewellery including a substrate partially coated with a black layer and decorated with at least one stone, the black layer including carbon nanotubes or aluminium oxide, the substrate being at least devoid of the black layer on the portion facing the stone. It also relates to the method for manufacturing this component for the timepiece or the piece of jewellery.

Abstract: A method for manufacturing a part by alloying a precious metal with boron, wherein: a quantity of precious metal reduced to powder form is provided; a quantity of a nano-structured micrometric boron powder is provided; the precious metal powder is mixed with the nano-structured micrometric boron powder to obtain a mixture; the mixture is compacted by applying a uniaxial pressure; the mixture is subjected to a spark plasma sintering or flash sintering treatment, or to a hot isostatic pressing (HIP) treatment, to obtain an ingot of a precious metal/boron alloy, and the ingot is machined to obtain the part, or the ingot is reduced to powder form by a micronisation treatment and the powder is treated to obtain the part. Additionally, a gold/boron alloy.

Abstract: A method for manufacturing an alloy formed from a boride of a precious metal, may involve reacting a source of the precious metal with a source of boron in a salt or a mixture of salts in the molten state. An alloy formed from a boride of a precious metal may include crystalline nanoparticles of MxBy with M being a precious metal, distributed in an amorphous matrix of B or in an amorphous matrix of B and of MzBa.

Abstract: A method for manufacturing an alloy formed from a boride of a precious metal, the method involving reacting a source of the precious metal with a source of boron in a salt or a mixture of salts in the molten state. The present invention also relates to an alloy formed from a boride of a precious metal, the alloy including crystalline nanoparticles of MxBy with M which is a precious metal, distributed in an amorphous matrix of B or in an amorphous matrix of B and of MzBa.

Abstract: A method for surface treatment of a metal material in a powder state is provided, the method including obtaining a powder formed from a plurality of particles of the metal material to be treated; and subjecting the powder to an ion implantation process by directing a beam of singly-charged or multi-charged ions towards an outer surface of the particles, the beam being produced by a source of singly-charged or multi-charged ions, whereby the particles have an overall spherical shape with a radius (R). There is also provided a material in a powder state formed from a plurality of particles having a ceramic outer layer and a metal core, the particles having an overall spherical shape.

Abstract: A method for single or multiply charged ion implantation into a surface of a treated object, and a device for implementing the implantation method, the method including: directing towards the surface of the treated object an ion beam produced by an ion source of the electronic cyclotron resonance type; producing at least one primary electron beam and directing the primary electron beam so that it passes through the ion beam; and producing a secondary electron beam by reflecting the primary electron beam onto a target once the primary electron beam has traversed the ion beam, the target being oriented such that the secondary electron beam falls onto the surface of the treated object.

Abstract: A multilayered interference pigment containing, in succession: a metal core in the form of a flake, the metal core containing a material selected from gold, silver, palladium, rhodium, ruthenium, platinum, osmium, iridium and an alloy thereof; a first layer of transparent dielectric material; and a second discontinuous metal layer making it possible to both reflect a portion of the light beam and to transmit another portion of this beam onto the metal core.

Abstract: A method for single or multiply charged ion implantation into a surface of a treated object, and a device for implementing the implantation method, the method including: directing towards the surface of the treated object an ion beam produced by an ion source of the electronic cyclotron resonance type; producing at least one primary electron beam and directing the primary electron beam so that it passes through the ion beam; and producing a secondary electron beam by reflecting the primary electron beam onto a target once the primary electron beam has traversed the ion beam, the target being oriented such that the secondary electron beam falls onto the surface of the treated object.

Abstract: A method for the implantation of mono- or multi-charged ions on a surface of an object to be treated placed in a vacuum chamber, wherein this method includes the step that consist simultaneously of: injecting into the vacuum chamber a beam of ions produced by a source of ions and directing this beam of ions towards the surface of the object to be treated, and illuminating the surface of the object to be treated with a source of ultraviolet radiation producing ultraviolet radiation that propagates in the vacuum chamber. An ion implantation installation for implementing the implantation method.

Abstract: The invention concerns a method for surface treatment of a ceramic material in powder form, wherein said method comprising the step of providing a powder formed of a plurality of particles of the ceramic material to be treated, and wherein said ceramic powder particles are subjected to an ion implantation process by directing towards an external surface of said particles a beam of singly or multiply charged ions produced by a charge of singly or multiply charged ions, for example of the electron cyclotron resonance ECR type, wherein said particles have a generally polyhedral shape. The invention also concerns a material in powder form, formed of a plurality of particles having a ceramic external layer and a ceramic core, wherein said particles have a generally polyhedral shape.