摘要:
An MgB 2 superconducting wire includes a core containing MgB 2 and a metal sheath which surrounds the core. The core includes at least a first MgB 2 core positioned on the center side, and a second MgB 2 core positioned outside the first MgB 2 core, and the density of the second MgB 2 core is lower than the density of the first MgB 2 core.
摘要:
A tape-shaped superconducting film-forming substrate is disclosed, which includes a film-forming face for forming a laminate including a superconducting layer thereon, a rear face that is a face at a side opposite to the film-forming face, a pair of end faces connected to the film-forming face and the rear face, and a pair of side faces connected to the film-forming face, the rear face, and the pair of end faces, in which each of the pair of side faces includes a spreading face that spreads toward an outer side in an in-plane direction of the film-forming face from an edge part of the film-forming face toward the rear face side. A superconducting wire and a superconducting wire manufacturing method are also disclosed.
摘要:
An MgB 2 superconducting wire includes a core containing MgB 2 and a metal sheath which surrounds the core. The core includes at least a first MgB 2 core positioned on the center side, and a second MgB 2 core positioned outside the first MgB 2 core, and the density of the second MgB 2 core is lower than the density of the first MgB 2 core.
摘要:
A wire splicing device includes: a holding base which is provided with a wire accommodation groove having a width, the wire accommodation groove being configured to accommodate a plurality of wires; a pressing plate which is positioned above the holding base; a heating body which is positioned above the pressing plate and includes a heating member; a first driver which drives the holding base and the pressing plate toward or away from one another; and a second driver which drives the holding base and the heating body toward or away from one another, in which the pressing plate which is driven toward the holding base by the first driver presses together the plurality of wires accommodated in the wire accommodation groove with solder interposed therebetween, and the heating body which is driven toward the holding base by the second driver presses together and heats, via the pressing plate, the plurality of wires accommodated in the wire accommodation groove with solder therebetween.
摘要:
A method and system for manufacturing a superconducting material is described. In one embodiment, a layer of refractory cushion is placed over a spool. A first layer of superconducting cable is wound over the first layer of refractory cloth. The superconducting cable is reaction heat-treated on the spool. A first layer of refractory fabric can be placed over the layer of refractory cushion. One or more adjustment mechanisms can be disposed between the first layer of the superconducting cable and the spool.
摘要:
Provided are a superconducting wire, etc. having a wire length which is sufficiently longer than that of the conventional one, and a critical current density which is uniformly high over the entire length thereof. A density of the magnesium diboride core (1) is 1.5g/cm 3 or higher. In a void (4) which is present in an arbitrary longitudinal cross-section in the longitudinal direction of the superconducting wire (10), when a length of a line segment which connects the most distant two points in a closed curve forming the void (4) is assumed to be L, among the voids (4) with length L of 20 µm or greater, the number of voids (4) with an angle formed by the line segment and the axis in the longitudinal direction of the superconducting wire (10) of 45° or greater is less than the number of voids (4) with the angle formed by the line segment and the axis in the longitudinal direction of the superconducting wire (10) of smaller than 45°. In an arbitrary 100µm region of the longitudinal direction of the longitudinal cross-section, when a virtual straight line approximated by the least squares method is drawn for a boundary curve between the magnesium diboride core (1) and the metal sheath (2), the distance between the approximate straight line and the boundary curve is 10 µm or less.
摘要:
A tape-shaped superconducting film-forming substrate is disclosed, which includes a film-forming face for forming a laminate including a superconducting layer thereon, a rear face that is a face at a side opposite to the film-forming face, a pair of end faces connected to the film-forming face and the rear face, and a pair of side faces connected to the film-forming face, the rear face, and the pair of end faces, in which each of the pair of side faces includes a spreading face that spreads toward an outer side in an in-plane direction of the film-forming face from an edge part of the film-forming face toward the rear face side. A superconducting wire and a superconducting wire manufacturing method are also disclosed.
摘要:
A conductor obtained by connecting a plurality of superconductors by normal conductivity or a conductor comprised of superconductors and normal conductors, said low resistance conductor using superconductors characterized in that an apparent specific resistance of said conductor at below a superconducting transition temperature of said superconductors is lower than the specific resistance of copper at that superconducting transition temperature.
摘要:
Ein Verfahren zur Fertigung einer zumindest zweiteiligen Struktur (43), insbesondere eines Halbzeugs für einen Supraleiterdraht, wobei eine erste Struktur (2a) und eine zweite Struktur (2b) separat gefertigt werden, und anschließend die erste Struktur (2a) und die zweite Struktur (2b) ineinander gefügt werden, ist dadurch gekennzeichnet, dass die erste Struktur (2a) und die zweite Struktur (2b) jeweils schichtweise durch selektives Laserschmelzen oder selektives Elektronenstrahlschmelzen eines Pulvers (6) gefertigt werden. Die Erfindung vereinfacht die Fertigung von zweiteiligen Strukturen, insbesondere für Halbzeuge von Supraleiterdrähten.
摘要:
An oxide superconductor has a composition expressed by RE a Ba b Cu 3 O 7-x , where RE represents one rare earth or a combination of two or more of a rare earth, a satisfies 1.05 ‰¤ a ‰¤ 1.35, b satisfies 1.80 ‰¤ b ‰¤ 2.05, and x represents an amount of oxygen deficiency, and a non-superconducting phase having an outer diameter of 30 nm or less is included in a superconducting phase.