A mechanical watch or measurement instrument including metallic parts, wherein each part of the mechanical watch mechanism has a relative magnetic permeability of less than 1.01.

The invention relates to a method for producing a timepiece component, characterised in that it comprises an electrodeposition step consisting in depositing an alloy on a substrate, forming at least one flank of the timepiece component with a thickness greater than or equal to 50 m, said electrodeposition step being carried out with an electrolyte solution comprising a nickel-containing compound and a second nickel-free compound at concentrations such that the alloy obtained comprises between 91 and 99.8 wt.-% nickel and between 0.2 and 6 wt.-%, or even between 0.2 and 4 wt.-%, of a second element from the second compound.

A method for fabricating metal decorations on a domed dial made of insulating material, wherein the method includes the steps of forming a photosensitive resin mould by a UV LIGA type process, and electrodepositing a layer of at least one metal starting from the conductive layer to form a block, which substantially reaches the upper surface of the photosensitive resin.

Provided is a jewelry ring comprising a substrate, a first coating of a metallic nitride or a metallic boride, and an external metallic coating. Also provided is a metallic article comprising a substrate comprising tungsten carbide, cobalt, tungsten, titanium, titanium carbide, zirconium, tantalum or aluminum; a first coating of a metallic nitride or a metallic boride; and an external metallic coating. A method for making a jewelry ring comprising a substrate, a first coating of a metallic nitride or a metallic boride, and an external metallic coating is additionally provided. Further provided is a method for making a metallic article comprising a substrate comprising tungsten carbide, cobalt, tungsten, titanium, titanium carbide, zirconium, tantalum or aluminum; a first coating of a metallic nitride or a metallic boride; and an external metallic coating.

HIGH SPEED PURE GOLD ELECTROFORMING/ELECTROPLATING BATH consisting of a. gold potassium sulphite and sodium gold sulphite of 1-40 g/l ; b. lithium sodium potassium rubidium or cesium salts of sulphurous acid of 2-100 g/l; c. alkali salts of phosphoric acid of 2-100 g/l; d. phosphonic acids in the form of 1-hydroxyl ethane-1, 1, diphosphonic acid, methylene phosphonic acid, ethylene diamine tetra methylene phosphonic acid of 2-50 g/l; e. bismuth as citrate, tartrate, oxalate, phosphonate or NTA complex of 5-1000 mg/l; and f. some amount of pyrophosphate, poly phosphates and other supporting electrolytes and wetting agents. The high speed pure gold electroforming/electroplating bath allows formation of wire structure in IC chips and/or dental/jewellery application with fine grain, high density, high uniformity, ability to withstand electrical stress and different hardness without using cyanide.

An arc-ablation resistant tungsten alloy switch contact and preparation method is disclosed. A contact member has a three-layer structure, wherein a first layer is a hydrophobic rubber layer, a second layer is a sheet metal layer, and a third layer is a tungsten alloy chemical deposition layer. A plating bath adopted in the chemical deposition contains 25-125 g/L soluble tungsten compound, 0-60 g/L soluble compound of a transition metal like ferrum, nickel, cobalt, copper or manganese, and 0-30 g/L soluble compound of tin, stibium, lead or bismuth. When a layered complex of the hydrophobic rubber layer and the sheet metal layer is chemically plated by the plating bath, a tungsten alloy plated layer is selectively deposited on a metal surface, and chemical deposition of the tungsten alloy does not occur on a surface of the hydrophobic rubber fundamentally.

Provided is a jewelry ring comprising a substrate, a first coating of a metallic nitride or a metallic boride, and an external metallic coating. Also provided is a metallic article comprising a substrate comprising tungsten carbide, cobalt, tungsten, titanium, titanium carbide, zirconium, tantalum or aluminum; a first coating of a metallic nitride or a metallic boride; and an external metallic coating. A method for making a jewelry ring comprising a substrate, a first coating of a metallic nitride or a metallic boride, and an external metallic coating is additionally provided. Further provided is a method for making a metallic article comprising a substrate comprising tungsten carbide, cobalt, tungsten, titanium, titanium carbide, zirconium, tantalum or aluminum; a first coating of a metallic nitride or a metallic boride; and an external metallic coating.

A counterfeiting deterrent device according to one implementation of the disclosure includes a plurality of layers formed by an additive process. Each of the layers may have a thickness of less than 100 microns. At least one of the layers has a series of indentations formed in an outer edge of the layer such that the indentations can be observed to verify that the device originated from a predetermined source. According to another implementation, a counterfeiting deterrent device includes at least one raised layer having outer edges in the shape of a logo. A light source is configured and arranged to shine a light through a slit in a substrate layer of the device and past an intermediate layer to light up the outer edge of the raised layer. The layers of the device are formed by an additive process and have a thickness of less than 100 microns each.

A self-lubricating solid composite coating configured for an application to timepiece mechanisms, including particles of graphene and/or graphene oxide distributed in a metal matrix.

A method of galvanoplastic deposition of a gold alloy on an electrode dipped into a bath including metal gold in alkaline aurocyanide form, organometallic compounds, a wetting agent, a sequestering agent and free cyanide, where the alloy metals are copper, in double copper and potassium cyanide form, and silver in cyanide form, allowing a mirror bright yellow gold alloy to be deposited on the electrode.