Abstract: The present invention relates to a superconducting current limiting device comprising a superconductor component (1) wherein each superconductor component (1) comprises a superconductor body (2) on which a coil (3) is wound the coil being electrically connected to the superconductor body (2) wherein in the superconducting current limiting device a magnetic field is generated on transition of the superconductor from the superconducting state to the normal conducting state.

Abstract: A resistive current limiter with at least one tubular high temperature superconductor body is disclosed provided with a shunt of a normal conducting material wound in coil configuration around the surface of the tubular superconductor body.

Abstract: A premixed powdery precursor composition suitable as precursor material for obtaining a coating solution for the preparation of, for instance, thin film superconductors based on YBCO 1:2:3 via a coating technique, wherein the powdery precursor composition comprises a mixture of suitable salts of the constituent elements, in particular salts of trifluoroacetate and acetate.

Abstract: The present invention is directed to a superconducting current limiting component, particularly to a ceramic high temperature superconducting current limiting component which is self triggering, comprising a coil (1) made of ceramic high temperature superconductor material, wherein around the outer surface of the coil (1) made of ceramic high temperature superconductor material a second coil (3) is applied as a shunt and, preferably, wherein the coil (1) made of ceramic high temperature superconductor material is applied onto a hollow cylindrical body (2) made of a ceramic high temperature superconductor material.

Abstract: A precursor material for the preparation of superconductors based on Bi2Sr2Ca1Cu2O8+? wherein the precursor material which is as close to equilibrium state as possible, i.e., has less than 5% in average 2201 intergrowths in the 2212 phase; in particular, the present invention relates to a precursor material, which is converted to the final conductor by partial melt processing, as well as to a process for the production of the precursor material and the use of the precursor material for preparing superconductors based on Bi2Sr2Ca1Cu2O8+?.

Abstract: The present invention relates to a superconducting current limiting device comprising a superconductor component (1) wherein each superconductor component (1) comprises a superconductor body (2) on which a coil (3) is wound the coil being electrically connected to the superconductor body (2) wherein in the superconducting current limiting device a magnetic field is generated on transition of the superconductor from the superconducting state to the normal conducting state.

Abstract: The invention relates to a high-temperature superconductor component with a particular cross-sectional area, which has a current-carrying section, the current-carrying section being in contact with a safety conductor in such a way that the critical current flowing on transition of the superconductor to normal conduction can be taken up without damage by the safety conductor in at least 1 second and rerouted, as well as a process for its production.

Abstract: The invention relates to a process for applying a resistive layer on an oxide superconducting element for electrically decoupling superconducting filaments contained in the element, an oxide superconducting element having a resistive layer and use thereof, in particular in ac applications, the resistive layer being formed by chemically converting the surface of a conducting metal coating sheating the superconducting core of said filaments into a salt of a metal constituting said conducting coating.

Abstract: The invention relates to a method for coating shaped bodies made of a superconducting material based on (Y/SE)BaCuO. The invention is characterized in that a coating consisting of a coating material is applied to at least one part of a surface of the shaped body, whereby the coating material at least partially melts at a lower temperature than that of the material of the shaped body and/or is flowable at a lower temperature than that of said material. The shaped body with the applied coating material is heated to a temperature at which the material of the shaped body does not yet melt and/or is not yet flowable, however at which the coating material is at least partially melted thereon and/or is in a flowable state.

Abstract: Protected superconductor component and process for its production The invention relates to a high-temperature superconductor component with a particular cross-sectional area, which has a current-carrying section, the current-carrying section being in contact with a safety conductor in such a way that the critical current flowing on transition of the superconductor to normal conduction can be taken up without damage by the safety conductor in at least 1 second and rerouted, as well as a process for its production.

Abstract: The invention relates to a method for coating shaped bodies made of a superconducting material based on (Y/SE)BaCuO. The invention is characterized in that a coating consisting of a coating material is applied to at least one part of a surface of the shaped body, whereby the coating material at least partially melts at a lower temperature than that of the material of the shaped body and/or is flowable at a lower temperature than that of said material. The shaped body with the applied coating material is heated to a temperature at which the material of the shaped body does not yet melt and/or is not yet flowable, however at which the coating material is at least partially melted thereon and/or is in a flowable state.

Abstract: According to the inventive method for producing a superconductive coil, a shaped body consisting of a material which is superconductive or which becomes superconductive upon subsequent heat treatment is coated with reinforcement agents and is given the geometric shape of the future coil. The invention also relates to a superconductive coil produced according to this method. Said inventive superconductive coil has low alternating current loss and consists of a highly textured superconductive material, and is oriented in such a way that the platelet levels are directly considerably in the direction of the course of the coil. The coil is formed from a superconductive solid part.

Abstract: A method of curing cracks in a ceramic shaped body made from ceramic magnet materials or ceramic superconductor materials, in which a filling material which melts at a lower temperature than the material of the shaped body or is flowable at a lower temperature than the material of the shaped body is applied to the surface of the shaped body at least in the area of a crack and/or is introduced into at least one crack, in which the shaped body with the filling material is heated to and maintained at a temperature at which the material of the shaped body does not yet melt or is not yet flowable, but at which the filling material is in at least partially molten and flowable state at least until the fused filling material can penetrate at least partially into the crack, in which the filling material consists of non-metallic or essentially of non-metallic compounds and is at least partially crystallized, and in which the shaped body with the filling material is cooled, wherein the thermal crystallization conditions

Abstract: The invention relates to a high-temperature superconductor component with a particular cross-sectional area, which has a current-carrying section, the current-carrying section being in contact with a safety conductor in such a way that the critical current flowing on transition of the superconductor to normal conduction can be taken up without damage by the safety conductor in at least 1 second and rerouted, as well as a process for its production.

Abstract: The invention relates to a process for the production of a superconducting coil, wherein

Abstract: The invention relates to a process for producing a shaped body, in which a mixture of oxidic starting powders or a superconducting material, which comprises at least 30% by volume of platelet-shaped primary particles and has such a composition that a high-temperature superconducting material is formed on later, suitable thermal treatment, is comminuted by milling, shearing and/or rolling in such a way that the comminuted powder has a powder particle size distribution having a d90 of ≦20 &mgr;m, and in which the powders which have been comminuted in this way are isostatically compacted by the dry bag method.

Abstract: The present invention relates to a process for preparing a high-T.sub.c superconductor as a precursor material for the oxide-powder-in-tube method, which involves mixing the oxides of the elements Bi, Sr, Ca and Cu and completely melting them at temperatures of .gtoreq.1000.degree. C., then casting the melt onto a substrate which is kept at room temperature, and disintegrating the cooled melt block and grinding it into a powder.

Abstract: In order to produce tubular moldings of high-temperature superconducting material based on oxides of bismuth, calcium, strontium, copper and optionally lead, a homogeneous melt of the oxide mixture in a predefined stoichiometry having temperatures from 900 to 1300.degree. C. is made to flow into a casting zone. The casting zone, as a function of its internal diameter, rotates at from 200 to 1500 rpm about its axis which is inclined by at least 15.degree. with respect to the horizontal. The solidified molding is taken from the casting zone and annealed for from 4 to 150 hours at from 700 to 900.degree. C. in an oxygen-containing atmosphere.

Abstract: Process for preparing a high-T.sub.c superconductor as a precursor material for the oxide-powder-in-tube method (OPIT). The present invention relates to a process for preparing a high-T.sub.c superconductor as a precursor material for the oxide-powder-in-tube method, which involves mixing the oxides of the elements Bi, Sr, Ca and Cu and completely melting them at temperatures of >1000.degree. C., then casting the melt onto a substrate which is kept at room temperature, and disintegrating the cooled melt block and grinding it into a powder.

Abstract: Process for preparing a high-T.sub.c superconductor as a precursor material for the oxide-powder-in-tube method (OPIT). The present invention relates to a process for preparing a high-T.sub.c superconductor as a precursor material for the oxide-powder-in-tube method, which involves mixing the oxides of the elements Bi, Sr, Ca and Cu and completely melting them at temperatures of .gtoreq.1000.degree. C., then casting the melt onto a substrate which is kept at room temperature, and disintegrating the cooled melt block and grinding it into a powder.