Korea Electrotechnology Research Institute

Dong Woo Ha

Rock Kil Ko

Sang Soo Oh

Hong Soo Ha

Kyu Jung Song

Ho Sup Kim

Seog Whan Kim

Young Sik Jo

Ho Seop Kim

Hyung Wook Kim

Chan Gook Park

Tae Hyung Kim

Chil Hoon Doh

Nam Jin Lee

The present invention relates to a stacking structure of a superconducting wire. The present invention provides a superconducting wire in which a metal substrate, a buffer layer, a superconducting layer, and a stabilizing layer are stacked, the superconducting wire including: a plurality of wedges which penetrates through the superconducting layer and the buffer layer to connect the stabilizing layer and the metal substrate. According to the present invention, it is possible to provide the superconducting wire of which mechanical strength is improved to have high resistance against to deterioration or delamination. Further, the present invention may provide the superconducting wire which is self-protectable against a quench phenomenon. Further, the present invention may provide the superconducting wire which is suitable for application of a high magnetic field.

High-temperature super conducting wire

The present invention relates to a superconducting coil having a structure in which an insulation layer electrically insulates the space between adjacent wound wires. The present invention provides a superconducting coil in which superconducting wires extended at a predetermined width in a lengthwise direction are stacked and wound, the superconducting coil comprising a metal-insulator transition (MIT) material layer interposed so as to electrically insulate space between adjacent superconducting wires in the stacking direction of the superconducting wires. According to the present invention, provided is a superconducting coil having high stability, and easily controlling electromagnetic properties including response properties and having a self-protective function against a quench phenomenon and the like during the driving of a magnet.

High-temperature superconducting coil having smart insulation, high-temperature superconducting wire used therefor, and manufacturing method therefor

Provided is a low-temperature superconducting wire having a low stabilizing matrix ratio. The present invention provides a superconducting wire including: a low-temperature superconducting filament; a stabilizing Matrix encompassing the filament; and a sheath of a Metal-Insulator Transition (MIT) material, which encompasses the stabilizing matrix on the exterior of the stabilizing matrix. According to the present invention, a low stabilizing matrix ratio is achieved while coping with heat caused by a quench phenomenon, thereby reducing manufacturing cost and achieving a high current density.

Low-temperature superconducting wire having low stabilizing matrix ratio, and superconducting coil having same

Disclosed is a method for manufacturing a superconducting wire material having a laminated structure. The present invention provides a method for manufacturing a laminated superconducting wire material, comprising the steps of: providing a deposition substrate having a predetermined width; sequentially forming, on the deposition substrate, a laminated structure including a buffer layer, a superconducting layer and a stabilization layer, thereby forming, on both sides of the deposition substrate, regions in which a metal substrate is exposed in the width direction; providing a lamination substrate, having a width corresponding to the deposition substrate, to the laminated structure; and providing solder to the regions, in which the metal substrate is exposed, to thereby bond the deposition substrate and the lamination substrate.

Superconducting wire material having laminated structure and manufacturing method therefor

Disclosed is a deposition apparatus for depositing a specific substance on an elongate substrate such as an elongate strip of tape or film. The apparatus includes a vacuum chamber, supply reel and the for reel for supplying elongate substrate in rolled form, a drum, disposed in the vacuum chamber, the drum having a helically-shaped guide groove formed along an outer surface of the drum for receiving the elongate substrate supplied from the supply reel to be wound in the guide groove and to subsequently feed the elongate substrate to a retreat reel to wind thereon upon rotation of the drum, and a deposition source material for depositing a material onto a surface of the elongate substrate which is wound on the drum. The apparatus further includes at least one slip-roller disposed adjacent to the drum in a longitudinal direction of the drum, wherein the slip-roller at least partially protrudes outwardly from an outer surface of the drum and being rotated in a moving direction of the elongate substrate such that a portion of the elongated substrate received in the helically-shaped guide groove of the drum is pulled out of contact from the guide groove to reduce a frictional contact there-between as the elongated substrate is fed upon rotation of the drum and the slip-roller.

Apparatus for depositing material on elongate substrate

A rolled superconducting article includes: a cylindrical bobbin having a post in a cylindrical shape; a superconducting strip wound on the cylindrical bobbin in a rolled shape with a predetermined tension applied, wherein the superconducting strip is formed of a superconducting thin film, which is coated with a metal coating layer on a facing surface of the superconducting thin film, and a stabilizing substrate wound on the superconducting strip, wherein the stabilizing substrate is coated with a metal coating layer on a facing surface of the stabilizing substrate; an anti-bonding substrate wound on an outer surface of the stabilizing substrate with a predetermined tension applied; wherein the superconducting thin film is thermally adhered to the stabilizing substrate by heat-treating the rolled superconducting strip with the anti-bonding substrate wound therearound.

Superconducting strip having metal coating layer and method of manufacturing the same

Disclosed herein is a superconducting strip having a metal coating layer and a method of manufacturing the superconducting strip. The method of manufacturing the superconducting strip includes: washing a superconducting thin film, a stabilizing substrate and an anti-bonding substrate with alcohol; forming a metal coating layer on each of the superconducting thin film and stabilizing substrate; adhering the superconducting thin film and stabilizing substrate to each other such that the metal coating layer formed on the superconducting thin film faces the metal coating layer formed on the stabilizing substrate; disposing the anti-bonding substrate on an outside of the stabilizing substrate and then winding the anti-bonding substrate such that the anti-bonding substrate and the stabilizing substrate are closely adhered to each other by winding the anti-bonding substrate around a bobbin under a predetermined tension; and heat-treating the superconducting thin film and stabilizing substrate such that they are bonded to each other by the metal coating layer disposed therebetween.

Disclosed herein is a deposition apparatus with a guide roller for a long superconducting tape. The deposition apparatus has a supply reel which is provided in a vacuum chamber and rotated to supply the tape, a feed and deposition unit which is spaced apart from the supply reel and vacuum deposits a superconducting layer on the tape while feeding the tape, and a collection reel which is spaced apart from the feed and deposition unit and is rotated to collect the vacuum-deposited tape. The feed and deposition unit includes a drum which is rotated to wind the tape on a predetermined portion of an outer circumference of the drum several times, thus feeding the tape, and a guide roller which is spaced apart from the drum, includes a plurality of rollers each having on an outer circumference thereof grooves and protrusions at regular intervals, and is inclined at a predetermined angle with respect to a rotating shaft of the drum by a sum of a width of the tape and a thickness of each of the protrusions, with the tape passing over an outer circumference of the guide roller. The invention deposits a superconducting layer while maintaining constant tension when the tape is thermally deposited, thus preventing the tape from being deformed because of the difference in the thermal expansion and contraction of the tape resulting from non-uniform tension.

Deposition apparatus with guide roller for long superconducting tape

Disclosed herein is a gradient thin film, formed on a substrate by simultaneously depositing different materials on the substrate using a plurality of thin film deposition apparatuses provided in a vacuum chamber, wherein the gradient thin film is formed such that the composition thereof is continuously changed depending on the thickness thereof by deposition control plates provided in the path through which the different materials move to the substrate. The gradient thin film is advantageous in that the thin film is formed by simultaneously depositing different materials using various deposition apparatuses, so that the composition thereof is continuously changed depending on the thickness thereof, with the result that the physical properties of a thin film are easily controlled and the number of deposition processes is decreased, and thus processing time and manufacturing costs are decreased, thereby improving economic efficiency.

Gradient thin film

Disclosed herein is a method of manufacturing round wire using superconducting tape, including the steps of: slitting superconducting tape into superconducting tape strips; silver-coating the slit superconducting tape strips; laminating the silver-coated superconducting tape strips to form a superconducting tape laminate having a square cross-section; holding the superconducting tape laminate; heat-treating the fixed superconducting tape laminate to cause diffusion junction between silver; and copper-plating the heat-treated superconducting tape laminate to have a circular section. The method is advantageous in that, since it is formed by slitting, silver-coating and laminating conventional superconducting tape, its superconducting layer can be protected, and it has a circular cross-section, so that it can be easily joined and wound, with the result that it is expected that, like general copper wires, its application fields will be enlarged because it can be wound in a solenoid shape at the time of magnetic winding.

Method of manufacturing round wire using superconducting tape and round wire manufactured using the superconducting tape

A method and apparatus for manufacturing superconducting tape through an integrated process, including the steps of: heat-treating a substrate wound on a drum in a reaction chamber; continuously depositing components, constituting a buffer layer, a superconducting layer, a contact resistance layer, and a protective layer of the superconducting tape, which are supplied from a deposition chamber, on the substrate; and heat-treating the substrate deposited with the components. The present invention is advantageous in that the unit cost and time for manufacturing a superconducting tape are decreased because all processes for manufacturing a superconducting tape can be performed under the same conditions, the uniformity and performance of a superconducting tape is improved because the same deposition conditions are applied to all of the process for manufacturing a superconducting tape, and a high-quality superconducting tape having high deposition efficiency can be obtained because specific components can be deposited on a large-sized substrate using a drum.

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Changwon-si, South Korea

Dong Woo Ha