摘要:
A method of forming a superconductor includes exposing a layer disposed on a substrate to an oxygen ambient, and selectively annealing a portion of the layer to form a superconducting region within the layer.
摘要:
Disclosed is a splicing method of two second-generation ReBCO high temperature superconductor coated conductors (2G ReBCO HTS CCs), in which, with stabilizing layers removed from the two strands of 2G ReBCO HTS CCs through chemical wet etching or plasma dry etching, surfaces of the two high temperature superconducting layers are brought into direct contact with each other and heated in a splicing furnace in a vacuum for micro-melting portions of the surfaces of the high temperature superconducting layers to permit inter-diffusion of ReBCO atoms such that the surfaces of the two superconducting layers can be spliced to each other and oxygenation annealing for recovery of superconductivity which was lost during splicing.
摘要:
A method for manufacturing a high temperature superconductor (=HTS) coated tape (20), with the following steps: preparation of a substrate tape (1), deposition of at least one buffer layer (2), deposition of an HTS film (3), deposition of a metallic protection layer (35) on the HTS film (3) and deposition of a metallic shunt layer (36) is characterized in that, prior to deposition of the metallic shunt layer (36), the partially prepared coated tape (10) undergoes a laser beam cutting in order to provide a desired tape form, wherein the laser beam cutting is applied together with a gas flow and/or a liquid flow (23). The method reduces the loss of critical current and reduces or avoids a deterioration of the critical temperature in a HTS coated tape due to tape cutting.
摘要:
A novel method and structure for creating a high-temperature superconducting tape. The concept of the invention is to use a conductor insulation which not only electrically insulates the conductors of the coil windings from each other, but also mechanically insulates them from the much stronger encapsulant. The insulation material mechanically decouples the conductor from the encapsulant at the boundary between them, thereby preventing damage as a result of thermal and electromagnetic shearing forces. The proposed structure allows the encapsulant to continue performing its functions of preventing coarse motion and stabilizing the coil as a whole, while allowing fine relative displacements of individual coil windings caused by radial stress gradients.
摘要:
There is established a superconducting magnet made of a high-temperature bulk superconductor and capable of trapping a high magnetic field with ease and stably. The superconducting magnet made of the high-temperature bulk superconductor, for use by trapping a magnetic field, is made of the bulk superconductor with an artificial hole therein, a low-melting metal impregnated into, and filling up at least the artificial hole, and a heat-conducting metal material embedded in portions of the high-temperature bulk superconductor, impregnated with, and filled with the low-melting metal. The superconducting magnet can be produced by a process involving the steps of providing the artificial hole in the high-temperature bulk superconductor, disposing the heat-conducting metal material in at least the artificial hole, applying a process of impregnating and filling up at least the artificial hole with the low-melting metal, and subsequently, executing a process of magnetizing.
摘要:
A method of surface modification in fabricating High Temperature Superconducting devices, characterized in that bombarding the preformed material surface with a particle beam having energy, to improve the smoothness of the material surface and change the microstructure or internal defects of the processed material, wherein the energy of the particle beam is in the range of 5 ev to 50000 ev, and the incidence angle is in the range of 5 degree to 85 degree. In some cases, in order to achieve the desired superconductivity, the bombarded sample is annealed, and the annealing temperature is in the range of 100° C. to 1500° C. The present invention can improve the surface smoothness of the processed material, reduce the surface defect, change the microstructure of the material, and thereby improve the superconductivity of the whole device. The bombarded material comprises a substrate, a transition layer, superconducting layer or any combination of them during the process of the fabrication of the superconducting devices.
摘要:
A superconducting device operable at temperatures in excess of 30° K. and a method for making the device are described. A representative device is an essentially coplanar SQUID device formed in a single layer of high Tc superconducting material, the SQUID device being operable at temperatures in excess of 60° K. High energy beams, for example ion beams, are used to convert selected portions of the high Tc superconductor to nonsuperconductive properties so that the material now has both superconductive regions and nonsuperconductive regions. In this manner a superconducting loop having superconducting weak links can be formed to comprise the SQUID device.
摘要:
A method of making an oxide superconductor article includes converting an oxide superconducting precursor into an oxide superconductor by thermo-mechanical processing using intermediate rolling deformation and heat treatment (including liquid-phase sintering and low temperature baking) and applying an additional heat treatment after the material is fully processed (including optional liquid-phase sintering and low temperature baking) to decompose any secondary phase remaining at the grain boundaries and to promote diffusion of the secondary phase into the oxide grain, where they form 2223 phase. The material has a better superconducting grain connectivity and improved superconducting transport property.
摘要:
A superconducting tape is disclosed, including a substrate, a buffer layer overlying the substrate, a superconductor layer overlying the buffer layer, and an electroplated stabilizer layer overlying the superconductor layer. Also disclosed are components incorporating superconducting tapes, methods for manufacturing same, and methods for using same. The tape provides for low AC losses, and is particularly suitable for deployment in components where attenuation of AC losses is important, such as in rotating machines.
摘要:
For producing a superconducting circuit, a film (12) consisting of a cuprate superconductor material is generated on a substrate (13), wherein the superconductor material is in the superconducting state at an operating temperature of the superconducting circuit to be produced, and then the film is irradiated by projecting an energetic ion radiation onto the film through a mask (11) positioned at a distance from the film and protecting selected areas of the film from being irradiated, the mask comprising a structure pattern transparent to the ion radiation but otherwise opaque to the ion radiation. Areas (14) not protected by the mask are irradiated with an ion dose being sufficiently low to avoid degradation of the crystal structure of the first film but being sufficient to inhibit superconductivity of the film with respect to the operating temperature; ion doses are preferably in the range of 0.8null1015 and 2null1015 ions/cm2 or below. The areas (15) of the film thus protected from irradiation form film portions which, at least at the operating temperature, act as a superconducting circuit.
摘要翻译:为了制造超导电路,在基板(13)上形成由铜酸盐超导体材料构成的膜(12),其中超导体材料在待制造的超导电路的工作温度下处于超导状态,然后 通过位于离膜的一定距离处的掩模(11)将能量离子辐射投射到膜上并保护膜的选定区域免受照射而照射胶片,该掩模包括对离子辐射透明但不透明的结构图案 到离子辐射。 照射未被掩模保护的区域(14),其离子剂量足够低以避免第一膜的晶体结构的劣化,但足以抑制膜相对于工作温度的超导性; 离子剂量优选在0.8.10 15和2.10 15离子/ cm 2或更低的范围内。 因此,膜的区域(15)免受照射形成膜部分,其至少在工作温度下用作超导电路。