In order to allow for maximum freedom of design in the selection of an electrode or battery shape, a compact configuration and low production costs, the invention specifies a battery electrode and a method for producing same, wherein a collector substrate is coated with a coating film and at least one arrester region is produced thereon by removing the coating film by means of laser ablation.

A heating method includes an oxide film forming step and a heating step. The thickness of an oxide film is set in a first range that includes a first maximal thickness and a second maximal thickness and that is smaller than a second minimal thickness in the relationship with the laser absorption having a periodic profile. The first maximal thickness corresponds to a first maximal value a of the laser absorption. The second maximal thickness corresponds to a second maximal value of the laser absorption. The second minimal thickness corresponds to a second minimal value of the laser absorption, namely the minimal value of the laser absorption that appears between the second maximal value and a third maximal value, or the maximal value of the laser absorption that appears subsequent to the second maximal value.

A welding assembly including a current generator, a first electrode electrically coupled to the current generator, the first electrode including a first engagement surface, a second electrode electrically coupled to the current generator, the second electrode including a second engagement surface, a width-determining fixture positioned between the first electrode and the second electrode to define a welding volume having a width, and an electrically nonconductive material positioned to electrically insulate at least one of the first electrode and the second electrode from an electrical conductor outside the width.

This invention provides a composite material that is durable in a hot environment and easily produced. The composite material according to the invention has an overlaid part comprising high-melting-point metal in at least a part on the surface of a low-melting-point alloy member having a melting point of 1600? C. or lower. The overlaid part comprising high-melting-point metal comprises high-melting-point metal particles comprising high-melting-point metal elements having a melting point of 2400? C. or higher scattered therein, and 40% or more of the high-melting-point metal particles has a roundness of 0.7 or higher. The low-melting-point alloy member comprises one type of a low-melting-point alloy selected from among a Fe-based alloy, a Ni-based alloy, a Co-based alloy, a Ti-based alloy, a Cr-based alloy, and a high-entropy alloy and the high-melting-point metal particles comprise at least one type of high-melting-point metal element selected from among W, Ta, Mo, and Nb.

A system and a method of forming a wear surface of a wheel of a rail vehicle include depositing one or more alloy powders onto a main body of the wheel, and plasma transfer arc welding the one or more powders to form one or more alloy layers secured to the main body.

A method of producing a micromachined workpiece by laser micromachining includes applying a protective layer (SS) to a surface (OF) of the workpiece (WS) and machining the surface in a machining area by a laser beam (LS) through the protective layer, wherein the protective layer (SS) is produced using a coating fluid (SF) containing an at least partially volatile carrier liquid (TF) in which metallic and/or ceramic particles (PT) are dispersed; the coating fluid (SF) is applied to the surface (OF) such that at least the machining area (MA) is covered with a protective coating fluid layer (SSF); the applied coating is dried to reduce the content of carrier liquid (TF) such that a protective layer (SS) forms, which is essentially composed of the particles (PT) of the applied coating fluid or of these particles and a reduced content of the carrier liquid relative to the coating fluid; and machining of the machining areas is carried out by a laser beam (LS) irradiated through the protective layer onto the workpiece (WS).

A deep black housing for a handheld electronic device is disclosed having one or more high resolution, bleached markings. The bleached markings are significantly lighter than the housing and exhibit a smooth appearance. Methods for preparing a housing having the finish and markings are also disclosed, including housings for use in mobile phones.

Disclosed are methods of hardfacing a glass mold made of cast iron, bronze, or steel comprising: machining an edge of the mold so as to form a flat surface, for example a flat spot or a chamfer; depositing a determined quantity of hardfacing material on the flat surface of the edge thereby machined, the hardfacing material comprising a metal or a metal alloy; and, simultaneously, locally welding the hardfacing material on the flat surface by means of a beam of a laser, so as to form a reinforcement zone.

The disclosure relates to a friction brake body for a friction brake of a motor vehicle, in particular a brake disc, wherein the friction brake body comprises a base body made from gray cast iron, and at least one wear resistant layer formed at least in areas on the base body. The wear resistant layer is a laser alloyed or laser dispersed edge layer of the base body and comprises at least one additive.

The linear groove formation method includes a resist forming process of forming a coated resist on a surface of a steel sheet, a laser irradiating process of irradiating laser beams onto the steel sheet while repeating a laser scanning in a direction intersecting a rolling direction of the steel sheet cyclically in the rolling direction of the steel sheet to remove the coated resist in portions irradiated with the laser beams, and an etching process of forming linear grooves by etching portions of the steel sheet from which the coated resist is removed. In the laser irradiating process, the coated resist is removed by using two or more laser irradiating devices, with a certain irradiation energy, a certain beam diameter in a direction perpendicular to a laser scanning direction, and a certain incidence angle with respect to the surface of the steel sheet.