This aluminum alloy material has an alloy composition which comprises at least one among 0.05-1.50 mass % of Fe, 0.01-0.15 mass % of Si, 0.01-0.3 mass % of Cu, and 0.01-1.5 mass % of Mg, with the balance being Al and inevitable impurities, and has a fibrous metal structure in which crystal grains extend in one direction. In a cross section parallel to said one direction, the average value of the dimensions of the crystal grains in a direction perpendicular to the longitudinal direction thereof is 800 nm or less, and the primary surface of the aluminum alloy material has a crystal orientation distribution in which the ratio H (K100/K111) of K100 to K111 is at least 0.15 as determined by the X-ray pole figure method, where K100 is the sum of the diffraction intensities resulting from crystals in which <100> is oriented in the longitudinal direction, and K111 is the sum of the diffraction intensities resulting from crystals in which <111> is oriented in the longitudinal direction. The aluminum alloy material has sufficient strength and workability to replace iron-based or copper-based metal materials.

A power cord with leakage current detection function includes an insulated neutral wire and aluminum foil wrapping or surrounding the neutral wire insulator. The neutral wire aluminum foil has a conductive side and a non-conductive side, wherein the non-conductive side is adjacent to the outside of the neutral wire insulator and the conductive side is facing outwards. The power cord also includes an insulated line wire surrounded by aluminum foil where the conductive side is facing outwards and in contact with the conductive side of the aluminum foil surround the neutral wire. The power cord also includes a copper braid surrounding an insulated ground wire, wherein the copper braid is in simultaneous electrical contact with the conductive sides of the line and neutral aluminum foil wraps.

A surface finish for a printed circuit board (PCB) and semiconductor wafer includes a nickel disposed over an aluminum or copper conductive metal surface. A barrier layer including all or fractions of a nitrogen-containing molecule is deposited on the surface of the nickel layer to make a barrier layer/electroless nickel (BLEN) surface finish. The barrier layer allows solder to be reflowed over the surface finish. Optionally, gold (e.g., immersion gold) may be coated over the barrier layer to create a nickel/barrier layer/gold (NBG) surface treatment. Presence of the barrier layer causes the surface treatment to be smoother than a conventional electroless nickel/immersion gold (ENIG) surface finish. Presence of the barrier layer causes a subsequently applied solder joint to be stronger and less subject to brittle failure than conventional ENIG.

This twisted wire conductor 10 for an insulated electrical wire is configured so as to be in a mixed state in which a first conductor 20 and a second conductor 40 are twisted together. The first conductor comprises a specific aluminum alloy: which has an alloy composition that contains, by mass %, 0.2-1.8% of Mg, 0.2-2.0% of Si, 0.01-0.33% of Fe and a total of 0.00-2.00% of one or more elements selected from the group consisting of Cu, Ag, Zn, Ni, Co, Au, Mn, Cr, V, Zr, Ti and Sn, with the remainder comprising Al and unavoidable impurities; which has a fibrous metal structure in which crystal grains extend in one direction; and in which the average value of a dimension t which is perpendicular to the longitudinal direction of crystal grains is 400 nm or less in a cross section parallel to this one direction. The second conductor has a higher electrical conductivity than the first conductor 20 and comprises a metal or alloy selected from the group consisting of copper, copper alloys, aluminum and aluminum alloys. The twisted wire conductor exhibits high electrical conductivity, high strength and excellent bending fatigue resistance, and enables a reduction in weight.

A method of electrically connecting a first conductor composed of a first material, preferably aluminum, to a second conductor comprising or composed of a second material different from the first material, preferably copper, with a connector. For that purpose a connector precursor is provided, which includes a conductor core composed of the first material and sheathed by a casing layer composed of another material. The connector precursor has a first end and a second end. According to the method the casing layer is removed in the region of the first end to provide a contact surface. The first conductor is then connected to the first end in the region of the contact surface and the second conductor is connected to the second end of the connector. A connector and a system are also provided.

An aluminum alloy material has an alloy composition which includes at least one among 0.2-1.8 mass % of Mg, 0.2-2.0 mass % of Si, and 0.01-1.50 mass % of Fe, with the balance being Al and inevitable impurities, and has a fibrous metal structure in which crystal grains extend in one direction. In a cross section parallel to the one direction, the average value of the dimensions of the crystal grains in a direction perpendicular to the longitudinal direction thereof is 400 nm or less, and the primary surface of the aluminum alloy material has a crystal orientation distribution in which the ratio H (K100/K111) of K100 to K111 is at least 0.17 as determined by the X-ray pole figure method, where K100 is the sum of the diffraction intensities resulting from crystals in which <100> is oriented in the longitudinal direction, and K111 is the sum of the diffraction intensities resulting from crystals in which <111> is oriented in the longitudinal direction.

A conductor for a high-current wireless power transfer (WPT) system includes plural thin-walled tubes formed from aluminum alloys and other materials and alloys with features that are similar to aluminum alloys. The tubes are sufficiently rigid so that they are self-supporting when used in a WPT system, and each of the tubes has a skin layer of about 0.28 mm, and a wall thickness in the range of about 6-12 mm. Plural cuts are formed along the longitudinal axis of each tube, and the plural cuts are effective to increase heat transfer from heat-generating parts of the WPT system to the surrounding area, thereby to aid in cooling. For a tube with an external diameter of about 6 mm, the plural cuts are formed with the dimensions of 1.5 mm width40 mm length.

The present invention relates to a first metal cable (1) having a flat upper (A) and a flat lower (B) surface, comprising at least one hollow riser (2) extending approximately 90 degrees from one of the flat surfaces of the first metal cable, the hollow riser being 5 configured to house an end of a second metal cable (3). A connected structure comprising a first metal cable wherein a second metal cable is inserted into the hollow riser (2) of the first metal cable and joined with the first metal cable. it also relates to a method of making a connected structure, joining a first metal cable to a second metal cable by friction welding the second metal cable (3) to the first metal cable by 10 contacting a rotating tool (4) with the lower surface of the first metal cable in the area underneath the hollow riser.

A wire rod made of an aluminum alloy. The aluminum alloy includes Al crystal grains, an AlZr compound, and an AlCoFe or AlNiFe compound. The aluminum alloy includes high-angle tilt crystal grain boundaries, each of which has a difference between crystal orientations in both its sides of 15 degrees or more, and low-angle tilt crystal grain boundaries, each of which has a difference between crystal orientations in both its sides of 2 degrees or more and less than 15 degrees. An average grain diameter of ones of the Al crystal grains surrounded by the high-angle boundaries is 12 m or more. An average grain diameter of the ones of the Al crystal grains surrounded by the high-angle boundaries, ones of the Al crystal grains surrounded by the high-angle boundaries and the low-angle boundaries, and ones of the Al crystal grains surrounded by the low-angle boundaries, is 10 m or less.

The present invention relates to electrical conductors for electrical transmission and distribution with pre-stress conditioning of the strength member so that the conductive materials of aluminum, aluminum alloys, copper, copper alloys, or copper micro-alloys are mostly tension free or under compressive stress in the conductor, while the strength member is under tensile stress prior to conductor stringing, resulting in a lower thermal knee point in the conductor.