Provided is a galvanized steel sheet having excellent plating adhesion, having a plated layer with improved friction characteristics by means of a predetermined level of Fe elution, and having excellent corrosion resistance; and a manufacturing method therefor.

Provided is a multilayer zinc alloy plated steel material comprising a base steel material and multiple plating layers formed on the base steel material, wherein each of the multiple plating layers includes one of a Zn plating layer, a Mg plating layer, and a Zn—Mg alloy plating layer, and the ratio of the weight of Mg contained in the multiple plating layers to the total weight of the multiple plating layers is from 0.13 to 0.24.

Provided is a multilayer zinc alloy plated steel material comprising a base steel material and multiple plating layers formed on the base steel material, wherein each of the multiple plating layers includes one of a Zn plating layer, a Mg plating layer, and a Zn—Mg alloy plating layer, and the ratio of the weight of Mg contained in the multiple plating layers to the total weight of the multiple plating layers is from 0.13 to 0.24.

Exemplary thermoelectric devices and methods are disclosed herein. Thermoelectric generator performance is increased by the shaping isothermal fields within the bulk of a thermoelectric pellet, resulting in an increase in power output of a thermoelectric generator module. In one embodiment, a thermoelectric device includes a pellet comprising a semiconductor material, a first metal layer surrounding a first portion of the pellet, and a second metal layer surrounding a second portion of the pellet. The first and second metal layers are configured proximate to one another about a perimeter of the pellet. The pellet is exposed at the perimeter. And the perimeter is configured at a sidewall height about the pellet to provide a non-linear effect on a power output of the thermoelectric device by modifying an isotherm surface curvature within the pellet. The device also includes a metal container thermally and electrically bonded to the pellet.

A surface-treated copper foil includes a bulk copper foil and a first surface treatment layer. The first surface treatment layer is disposed on a first surface of the bulk copper foil and includes a roughening layer, where the outermost surface of the first surface treatment layer is a treating surface of the surface-treated copper foil. The material volume (Vm) of the treating surface is 0.06 to 1.45 μm.sup.3/μm.sup.2, and the five-point peak height (S5p) of the treating surface is 0.15 to 2.00 μm.

The present disclosure relates to a plated steel material that can be used in an automobile, a household appliance, a building material, and the like, and more particularly, to a zinc alloy plated steel material having excellent surface quality and corrosion resistance, and a method for manufacturing the same.

An electrical connecting structure (10) for use as a means for transmitting electrical energy between a first electrical component and a second electrical component, wherein the connecting structure (10) is formed from a number of layers (20, 30, 40, 50) arranged serially with one another, a first outer layer (20) consisting of aluminum or an aluminum alloy and a second outer layer (50) preferably consisting of aluminum or an aluminum alloy, and a third and preferably fourth layer (30, 40), specifically one or two inner layers, being provided between the outer layers (20, 50), the inner layer or inner layers (30, 40) being respectively produced by cold gas spraying.

An embodiment relates to an ultrasonic additive manufacturing process, comprising joining a foil comprising a bulk metallic glass to a substrate; and forming a cladded composite comprising the foil and the substrate; wherein a thickness of the cladded composite is greater than a critical casting thickness of the bulk metallic glass, wherein the cladded composite comprises a cladding layer of the bulk metallic glass on the substrate and the bulk metallic glass comprises approximately 0% crystallinity, approximately 0% porosity, less than 50 MPa thermal stress, approximately 0% distortion, approximately 0 inch heat affected zone, approximately 0% dilution, and a strength of about 2,000-3,500 MPa.

An embodiment relates to an ultrasonic additive manufacturing process, comprising joining a foil comprising a bulk metallic glass to a substrate; and forming a cladded composite comprising the foil and the substrate; wherein a thickness of the cladded composite is greater than a critical casting thickness of the bulk metallic glass, wherein the cladded composite comprises a cladding layer of the bulk metallic glass on the substrate and the bulk metallic glass comprises approximately 0% crystallinity, approximately 0% porosity, less than 50 MPa thermal stress, approximately 0% distortion, approximately 0 inch heat affected zone, approximately 0% dilution, and a strength of about 2,000-3,500 MPa.

Provided is a composition for forming a plating base on which plating is applied without a pretreatment, especially any activation process for the plating base, conventionally believed to be necessary, as well as a thus-formed plating base and a method of forming a plating coat over the plating base. The plating base is a coating film formed by applying and drying a metal nanoparticle dispersion liquid or a metal nanoparticle dispersion ink in which metal nanoparticles are protected with a small amount of protecting agent. Thus, a metal film can be formed by plating without operations such as substrate cleaning or catalyst imparting and activating. Since it is not necessary to wash the substrate with acid or base solution or to heat-treat it at a high temperature, many variations of materials become available for the substrate.