A coating for a carrier material made of a steel material for joining to an aluminum material includes a first sublayer on the core part side and a second sublayer on the outside. On average, the coating includes approximately 1 to 10 wt. % silicon and iron, the remainder being aluminum. The first sublayer at least approximately includes 42 wt. % iron, 11 wt. % silicon, and no more than approximately 45 wt. % aluminum, which constitutes the remainder, and has a thickness of no more than approximately 3.5 m. The second sublayer includes approximately 1 to 10 wt. % silicon, the remainder being aluminum, and has a thickness of approximately 5 to approximately 95 mm.

Local metallization of semiconductor substrates using a laser beam, and the resulting structures, e.g., micro-electronic devices, semiconductor substrates and/or solar cells, are described. For example, a solar cell includes a substrate and a plurality of semiconductor regions disposed in or above the substrate. A plurality of conductive contact structures is electrically connected to the plurality of semiconductor regions. Each conductive contact structure includes a locally deposited metal portion disposed in contact with a corresponding a semiconductor region.

An arc welding device includes memory in which a combination of a short circuit frequency, a peak current, and a peak current period is stored and determinator that determines a peak current and a peak current period based on a set short circuit frequency and the combination stored in memory. A welding output part performs welding output based on the peak current and the peak current period determined by determinator.

A highly reliable joined structure and joining method by suppressing peeling at joined portions in the joined structure formed by joining metals together is provided. A joined structure according to the present disclosure is a joined structure in which a plurality of metals are laminated and joined together, the plural metals include a plurality of convex portions arranged on a surface positioned in a lamination direction and flat portions arranged between the plural convex portions, and tip ends of the plural convex portions are formed by curved surfaces.

An inspection system includes a laser light source, an optical system for laser marking that irradiates a semiconductor device with laser light from a metal layer side, a control unit that controls the laser light source to control laser marking, a two-dimensional camera that detects light from the semiconductor device on a substrate side and outputs an optical reflection image, and an analysis unit that generates a pattern image of the semiconductor device, and the control unit controls the laser light source so that laser marking is performed until a mark image appears in a pattern image.

A method for preparing a precoated sheet is provided. The method includes providing a precoated sheet having a metallic substrate with a precoating on at least one of its faces and removing through laser ablation at least a portion of the precoating on the at least one face of the precoated sheet in a removal zone. The ablation step is carried out in an installation. The installation includes at least one protective element having a protective surface. During the ablation step, the protective surface contacts the precoated sheet in a contact area in register with the laser beam as the laser beam removes the portion of the precoating. A plane tangent to the protective surface at the contact area forms a dihedral angle with the plane of the face of the precoated sheet. This angle is strictly smaller than 90.

A multilayer steel includes a core formed of transformation-induced plasticity (TRIP) steel. A decarburized layer is exterior to the core on at least one side thereof. The decarburized layer has reduced carbon content relative to the core. A zinc-based layer is exterior to the decarburized layer. The decarburized layer may have a composition of at least 80 percent ferrite, such that LME is reduced or mitigated. In some configurations, the decarburized layer is between 10-50 microns thick. A method of creating a coated advanced high-strength steel component is also provided. An apparatus for forming a coated advanced high-strength steel is also provided. The core of the multilayer steel may have a carbon weight-percent of less than or equal to 0.4. The decarburized layer of the multilayer steel may have a carbon weight-percent of less than or equal to 50 percent of the carbon weight-percent of the core.

The invention is directed at a self-brazing strip. In an aspect, a process is used to generate a multi-layer alloy strip made up of at least one base layer of with a least another layer of material, that when both the material and base layer are brazed, form an alloy. In an aspect, the other layer of material can include a metal. The base layer can include titanium or a titanium alloy.

An inspection system includes a laser light source, an optical system for laser marking that irradiates a semiconductor device with laser light from a metal layer side, a control unit that controls the laser light source to control laser marking, a two-dimensional camera that detects light from the semiconductor device on a substrate side and outputs an optical reflection image, and an analysis unit that generates a pattern image of the semiconductor device, and the control unit controls the laser light source so that laser marking is performed until a mark image appears in a pattern image.

The present disclosure provides a laser processing method of performing surface processing on a copper surface by using laser. The method forms a periodic structure on the order of laser wavelength on a copper surface by irradiating the copper surface with pulse laser having a laser power close to a threshold beyond which processing of copper foil is possible and having a pulse width on the order of nanoseconds, and forms a coating on the copper surface. in this manner, the copper surface can be processed to have a favorable electric characteristic and desirable adhesion with a resin material.