C25D1/003

Method for manufacturing a timepiece component and component obtained by this method
11181868 · 2021-11-23 · ·

The present invention relates to a method for manufacturing metal timepiece components, characterised in that it comprises the steps of forming a multi-level photoresist mould, by means of a UV-LIGA type method, and of galvanically depositing a layer of at least one metal starting from at least two conductive layers so as to form a block that substantially reaches the top surface of the photoresist.

Aluminum porous body and method for producing aluminum porous body

An aluminum porous body has a skeleton with a three-dimensional network structure, in which the skeleton is formed of an aluminum layer containing aluminum carbide, and when the aluminum porous body is subjected to XRD measurement, diffraction peaks originating from aluminum carbide are detected at two peak positions in a 2θ range of 30.8° or more and 31.5° or less and a 2θ range of 31.6° or more and 32.3° or less.

Methods for forming flow channels in metal inverse opal structures

A method for forming a flow channel in a MIO structure includes positioning a plurality of sacrificial spheres along a base substrate, heating a region of the plurality of sacrificial spheres above a melting point of the plurality of sacrificial spheres, thereby fusing the plurality of sacrificial spheres together and forming a solid channel, electrodepositing material between the plurality of sacrificial spheres and around the solid channel, removing the plurality of sacrificial spheres to form the MIO structure, and removing the solid channel to form the flow channel extending through the MIO structure.

MENISCUS-CONFINED THREE-DIMENSIONAL ELECTRODEPOSITION
20210348288 · 2021-11-11 ·

The invention relates to a process and a system for 3-dimentional (3D) fabrication of sub-micron structures and is established by local electrochemical deposition methods.

Electrochemical three-dimensional printing and soldering

A hydrogen evolution assisted electroplating nozzle includes a nozzle tip configured to interface with a portion of a substructure. The nozzle also includes an inner coaxial tube connected to a reservoir containing an electrolyte and an anode, the inner coaxial tube configured to dispense the electrolyte through the nozzle tip onto the portion of the substructure. The nozzle also includes an outer coaxial tube encompassing the inner coaxial tube, the outer coaxial tube configured to extract the electrolyte from the portion of the substructure. The nozzle also includes at least one contact pin configured to make electrical contact with a conductive track on the substrate.

Methods of forming high-temperature electroformed components and related components

An electroformed composite component includes reinforcing particles in a metal matrix. The composite component is formed by a method including passing an electric current between an anode and a cathode in the presence of an electrolyte. The electrolyte includes a metal salt and a plurality of reinforcing particle precursors. The method further includes depositing a composite layer on the cathode, wherein the composite layer includes the metal matrix and the plurality of reinforcing particle precursors dispersed in the metal matrix. An optional heat treatment can be performed subsequently to transform the precursor particles to more stable forms with concomitant improvement in composite material properties.

Production of Three-Dimensional Structures by Means of Photoresists
20210341835 · 2021-11-04 ·

A process for the production of three-dimensional structures involves generating stepped structures in the micrometer to millimeter range. A novel possibility for realizing microstructures for micromechanical and high-performance electronic structures allows a substantially free shaping of and high-throughput production of stepped structures is met according to the invention by coating a copper-clad substrate at least once with a first photoresist for generating a defined height of at least one structure step and coating the first photoresist at least once with a second photoresist for generating a defined height of at least one further structure step, wherein the first photoresist and the second photoresist have different photosensitivities and transmission characteristics which generate structure-forming regions at least of the first photoresist and second photoresist by exposing with different wavelengths and radiation doses and after developing. The structure-forming regions at least partially overlap one another and form a stepped three-dimensional structure.

SYSTEMS FOR UPDATING TARGET MAPS BASED ON POSITION CHANGE IN ELECTROCHEMICAL-ADDITIVE MANUFACTURING SYSTEMS

Described herein are electrochemical-additive manufacturing methods and systems using such methods. A method comprises depositing a material onto a deposition electrode by flowing a current between that deposition electrode and each of multiple individually-addressable electrodes, forming an electrode array. These currents are independently controlled based on a target map and using deposition control circuits, each coupled to one individually-addressable electrode. The target map is generated by a system controller based on various characteristics of the system (e.g., the performance of each deposition control circuit and/or individually-addressable electrode, electrolyte composition) and the desired characteristics of the deposited material (e.g., deposition location, uniformity, morphology). Furthermore, when the deposition electrode and the electrode array move relative to each other, the system controller dynamically updates the target map based on their relative positions. This movement can provide a fresh electrolyte between the electrodes and enable deposition at new locations.

SHIELD BODY SYSTEM FOR A PROCESS FLUID FOR CHEMICAL AND/OR ELECTROLYTIC SURFACE TREATMENT OF A SUBSTRATE

The invention relates to a shield body system for a process fluid for chemical and/or electrolytic surface treatment of a substrate, use of a shield body system, and a method for a chemical and/or electrolytic surface treatment of a substrate in a process fluid. The shield body system comprises a shield body and an agitation unit. The shield body has a plurality of openings to direct the process fluid flow and/or a current density distribution towards the substrate to be treated. The agitation unit is configured to move the shield body together with the substrate vertically and/or horizontally relative to a distribution body. Alternatively or additionally, the agitation unit is configured to move the shield body together with the substrate vertically and/or horizontally relative to a deposition chamber for chemical and/or electrolytic surface treatment.

Using target maps for current density control in electrochemical-additive manufacturing systems

Described herein are electrochemical-additive manufacturing methods and systems using such methods. A method comprises depositing a material onto a deposition electrode by flowing a current between that deposition electrode and each of multiple individually-addressable electrodes, forming an electrode array. These currents are independently controlled based on a target map and using deposition control circuits, each coupled to one individually-addressable electrode. The target map is generated by a system controller based on various characteristics of the system (e.g., the performance of each deposition control circuit and/or individually-addressable electrode, electrolyte composition) and the desired characteristics of the deposited material (e.g., deposition location, uniformity, morphology). Furthermore, when the deposition electrode and the electrode array move relative to each other, the system controller dynamically updates the target map based on their relative positions. This movement can provide a fresh electrolyte between the electrodes and enable deposition at new locations.