Abstract: A superconducting wire includes a substrate and a superconducting material layer. The substrate includes a first main surface and a second main surface opposite to the first main surface. The superconducting material layer is disposed on the first main surface. Along at least a part of the superconducting wire in a direction in which the superconducting wire extends, the superconducting material layer is disposed to cover a side surface of the substrate in a width direction of the substrate and cover at least a part of the second main surface. A thickness of the superconducting material layer located on the first main surface varies along the width direction. A maximum thickness of the superconducting material layer located on the second main surface is smaller than a maximum thickness of the superconducting material layer located on the first main surface.

Abstract: The present invention relates to a high temperature-superconducting wire having a superconducting layer laminated thereon and a method of manufacturing the same. The method includes: preparing a pair of superconducting wires each of which includes a metal substrate, a buffer layer, a superconducting layer, and a protective layer; laminating the pair of superconducting wires to allow respective protective layers to face each other; performing thermal treatment to the laminated superconducting wires to join the protective layers together; separating the metal substrate and the buffer layer from the superconducting layer on one side; and forming a protective layer on an upper part of the superconducting layer having a surface exposed.

Abstract: Disclosed is a sintered body composition used in improved diffusion efficiency of heavy rare earth elements RH, and related sintered permanent magnet and preparation methods. The sintered body includes Nd2Fe14B crystal phase as a primary phase, and a rare earth rich phase as a grain boundary phase. The sintered body includes a composition expressed by RaBbGacCudAleMfCogFebalance; wherein R is one or more selected from rare earth elements, and R includes Nd; M is one or more selected from the group consisting of Zr, Ti, and Nb; and wherein “a” satisfies 13%?a?15.3%; “b” satisfies 5.4%?b?5.8%; “c” satisfies 0.05%?c?0.25%; “d” satisfies 0.08%?d?0.3%; “e” satisfies 0?e?1.2%; “f” satisfies 0.08%?f?0.2%; and “g” satisfies 0.8%?g?2.5%. Grains in Nd2Fe14B crystal phase have average size L of 4-8 ?m, and the relationship between L and t for grain boundary phases average thickness is: ?=t/L, wherein ? is defined as 0.009???0.012.

Abstract: A superconductor wire having a first HTS layer with a first cap layer in direct contact with a first surface of the first HTS layer and a second cap layer in direct contact with a second surface of the first HTS layer. There is a first lamination layer affixed to the first cap layer and a stabilizer layer having a first surface affixed to the second cap layer. There is a second HTS layer and a third cap layer in direct contact with a first surface of the second HTS layer and a fourth cap layer in direct contact with a second surface of the second HTS layer. There is a second lamination layer affixed to the fourth cap layer. The second surface of the stabilizer layer is affixed to the third cap layer and there are first and second fillets disposed along a edge of the laminated superconductor.

Abstract: A subelement (1) for an Nb3Sn-containing superconductor wire includes an Sn-containing core (2), an inner matrix (5) which includes Cu and surrounds the Sn-containing core (2), a region (7) of mutually abutting Nb-containing rod elements (8, 30), which surrounds the inner matrix (5), where the Nb-containing rod elements (8, 30) are each configured with an Nb-containing core filament (9; 31) and a Cu-containing filament casing (10), an outer matrix (6) which includes Cu and surrounds the region (7) of Nb-containing rod elements (8, 30). The Sn-containing core (2) has a core tube (3) into which an Sn-containing powder (4) has been introduced, the Sn-containing powder (4) being in a compacted state. This provides a subelement for an Nb3Sn-containing superconductor wire which cost-effectively yields an improved superconducting current carrying capacity.

Abstract: Disclosed is a superconducting magnet with improved thermal and electrical stabilities and a method for manufacturing the same. The superconducting magnet includes a bobbin disposed at a center of the superconducting magnet, a superconducting winding wound around an outer face of the bobbin, and an epoxy impregnated at an exterior of the superconducting winding, wherein the epoxy contains carbon nanotubes.

Abstract: Metallic alloys and methods for the preparation of free-standing metallic materials in a layerwise manner. The resulting layerwise construction provides a metallic skeleton of selected porosity which may be infiltrated with a second metal to provide a free-standing material that has a volume loss of less than or equal to 130 mm3 as measured according to ASTM G65-04 (2010).

Abstract: Proposed is a novel embedded structure for suppressing a disturbance in the cross sectional shape and a non-uniform deformation of a metal member arising in a precursor when producing an MgB2 multi-core wire material by a surface reduction process. This superconductive multi-core wire material precursor is characterized by having: soft Cu and Fe pure metals disposed in the center; mixed powder elements, each comprising as a sheath material a metal such as Fe or Nb having a barrier effect preventing a reaction between Mg and Cu, the mixed powder elements being disposed in a form that surrounds the periphery of the soft metal serving as the central material; and disposed around these, an outer shell layer produced from a harder metal than the central material and the sheath material.

Abstract: A method of producing polycrystalline Y3Ba5Cu8Oy (Y-358) whereby powders of yttrium (III) oxide, a barium (II) salt, and copper (II) oxide are pelletized, calcined at 850 to 950° C. for 8 to 16 hours, ball milled under controlled conditions, pelletized again and sintered in an oxygen atmosphere at 900 to 1000° C. for up to 72 hours. The polycrystalline Y3Ba5Cu8Oy thus produced is in the form of elongated crystals having an average length of 2 to 10 ?m and an average width of 1 to 2 ?m, and embedded with spherical nanoparticles of yttrium deficient Y3Ba5Cu8Oy having an average diameter of 5 to 20 nm. The spherical nanoparticles are present as agglomerates having flower-like morphology with an average particles size of 30 to 60 nm. The ball milled polycrystalline Y3Ba5Cu8Oy prepared under controlled conditions shows significant enhancement of superconducting and flux pinning properties.

Abstract: A superconducting composition of matter including overlapping first and second regions. The regions comprise unit cells of a solid, the first region comprises an electrical insulator or semiconductor, and the second region comprises a metallic electrical conductor. The second region extends through the solid and a subset of said second region comprise surface metal unit cells that are adjacent to at least one unit cell from the first region. The ratio of the number of said surface metal unit cells to the total number of unit cells in the second region being at least 20 percent.

Abstract: This disclosure teaches methods for making high-temperature superconducting striated tape combinations and the product high-temperature superconducting striated tape combinations. This disclosure describes an efficient and scalable method for aligning and bonding two superimposed high-temperature superconducting (HTS) filamentary tapes to form a single integrated tape structure. This invention aligns a bottom and top HTS tape with a thin intervening insulator layer with microscopic precision, and electrically connects the two sets of tape filaments with each other. The insulating layer also reinforces adhesion of the top and bottom tapes, mitigating mechanical stress at the electrical connections. The ability of this method to precisely align separate tapes to form a single tape structure makes it compatible with a reel-to-reel production process.

Abstract: A technique relates to configuring a superconducting router. The superconducting router is operated in a first mode. Ports are configured to be in reflection in the first mode in order to reflect a signal. The superconducting router is operated in a second mode. A given pair of the ports is connected together and in transmission in the second mode, such that the signal is permitted to pass between the given pair of the ports.

Abstract: An oxide dispersion-strengthened (ODS) iron-based alloy powder and a characterization method thereof are provided. The alloy powder comprises a matrix and strengthening phases. The strengthening phases include at least two types of strengthening phase particles with different sizes, wherein a volume of the particles with a particle size of less than or equal to 50 nm accounts for 85-95% of a total volume of all the strengthening phase particles. The matrix is a Fe—Cr—W—Ti alloy. The characterization method of the ODS iron-based alloy powder comprises separating the strengthening phases from the powder matrix through electrolysis, and analyzing and characterizing the strengthening phases using an electron microscope.

Abstract: With a hot-rolled steel sheet for electrical steel sheet production having a scale layer on the surface, where the surface of the steel sheet has a lightness L* as defined in JIS Z 8781-4: 2013 satisfying 30?L*?50, and chromaticities a* and b* as defined in JIS Z 8781-4: 2013 satisfying ?1?a*?2 and ?5?b*?3 respectively, and with one end portion in the longitudinal direction of a coil as a reference, a color difference ?Eab* as defined in JIS Z 8781-4: 2013 at the central portion and at the opposite end portion satisfies ?Eab*?8, it is possible to obtain a grain-oriented electrical steel sheet where the variation of properties in a product coil is small.

Abstract: A segment of a field coil, a toroidal field coil, and a method of manufacturing is provided. The segment of a field coil is for use in a superconducting electromagnet. The segment includes an assembly for carrying electrical current in a coil of a magnet. The assembly includes a pre-formed housing comprising a channel configured to retain high temperature superconductor (HTS) tape, the channel including at least one pre-formed curved section. The assembly further includes a plurality of layers of HTS tape fixed within the channel. Wherein the pre-formed curved section has a radius of curvature which is less than a total thickness of the layers of HTS tape in that section divided by twice a maximum permitted strain of the HTS tape.

Abstract: There is provided a method for manufacturing an alloy ribbon that suppresses different magnetic properties at each position of the alloy ribbon obtained by crystallizing an amorphous alloy ribbon. The method for manufacturing an alloy ribbon includes: heating a laminated body in which positions of thick portions of a plurality of amorphous alloy ribbons are shifted to a first temperature range less than a crystallization starting temperature; and heating an end portion in a lamination direction of the laminated body to a second temperature range equal to or more than the crystallization starting temperature after the heating the laminated body. An ambient temperature is held after heating the laminated body such that the laminated body is maintained within a temperature range in which the laminated body can be crystallized by heating the end portion to the second temperature range.

Abstract: A device includes: a substrate including a superconductor quantum device, the superconductor quantum device including a superconductor material that exhibits superconducting properties at or below a corresponding critical temperature; a cap layer bonded to the substrate; and a sealed cavity between the cap layer and the substrate.

Abstract: A burner for producing synthesis gas by partial oxidation of liquid or gaseous, carbon-containing fuels in the presence of an oxygen-containing oxidant and a moderator, which burner can be operated uncooled, i.e. without a fluid coolant being passed through the burner, is proposed. Steam or carbon dioxide or else mixtures of these materials are used as moderator. This is achieved by the feed channels being configured so that mixing of the fuel, the moderator and the oxidant occurs only outside the burner.

Abstract: For producing an Nb3Sn superconductor wire, restack rod process (RRP) subelements (1a; 60a) are grouped to form a bundle having an approximately circular cross section and are arranged together with filling elements (18a-18c) in an internally and externally round outer tube (19; 52). To the inside the filling elements form a serrated profile (25) for abutment against the hexagonal subelements, and to the outside they form a round profile (24) for direct or indirect abutment in the outer tube. In fabricating the RRP subelements, and before a reshaping with a reduction in cross section, an externally hexagonal and internally round casing structure (9) is provided, into which the remaining parts of the subelements are inserted, in particular, an annular arrangement of hexagonal Nb-containing rod elements (4), which are surrounded externally by an outer matrix (7, 61) and internally by an inner matrix (3).

Abstract: Provided is a titanium cast product for hot rolling made of commercially pure titanium, the titanium cast product including a melted and resolidified layer in a range of more than or equal to 1 mm in depth on a surface serving as a rolling surface, the melted and resolidified layer being obtained by adding one or more elements out of any one of or both of at least one ? stabilizer element and at least one neutral element to the surface, and melting and resolidifying the surface. An average value of a total concentration of the at least one ? stabilizer element and the at least one neutral element in the range of more than or equal to 1 mm in depth is higher than a total concentration of the at least one ? stabilizer element and the at least one neutral element in a base metal by, in mass %, more than or equal to 0.1% and less than 2.0%.