Superconductive element and relative preparation process

A technology for superconducting and components, which is applied to superconducting components and related fields of preparation, and can solve problems such as inserts that cannot obtain superconducting materials.

Inactive Publication Date: 2010-12-29
EHDISON SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as already mentioned, this technique cannot obtain intercalations of superconducting material with a high density
Therefore, the device described in EP 0503447 also has a limited ability to transport high current densities

Method used

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  • Superconductive element and relative preparation process
  • Superconductive element and relative preparation process
  • Superconductive element and relative preparation process

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0173] A superconducting element according to the present invention was produced in the following manner. A groove with a width of 0.5-1 mm and a depth of 4.5 mm is formed by electrocorrosion on the surface of a disc-shaped steel support with a diameter of 60 mm. The grooves were formed in such a way that an open track was created on the support in a helical manner starting at an inner diameter of 20 mm and unwinding into 7 helices until reaching an outer diameter of 54 mm. The grooves are filled with a precursor powder consisting of crystalline boron. The boron powder is mechanically activated by rolling with rotating cylinders in a mill. The powder thus milled was then filtered through a sieve having a mesh size of 40 microns. The average diameter of the powder is 25 microns. The powder in the grooves is manually compacted with the help of rollers until it reaches a density equal to 1.2 g / cm 3 up to the actual density. The support with grooves filled with compacted powd...

example 2

[0175] Use a disc-shaped steel support with a diameter of 70mm and a thickness of 8mm to prepare a superconducting permanent magnet as a superconducting element, and inlay two spiral grooves (size: 1.5mm wide, 2.5-3.0mm deep) on both sides of the steel support ), the helical groove develops in 16 helices from the center of the disc to the periphery according to an isotropic trend, that is, two helices wrap around the normal axis of the support in the same direction. The two grooves are connected by two holes of diameter 3 mm in the support so as to connect the two centers to each other and to connect the two ends of the helical groove.

[0176] Insert the same crystalline boron powder as in Example 1 into the grooves and holes of the support and manually compact until the actual density reaches 1.2g / cm 3 until. Two magnesium sheets of the same type as used in Example 1 were positioned on supports facing each other on both sides of the disc. Then, the support thus prepared wa...

example 3

[0179] The superconducting element consisting of a disc-shaped non-magnetic AISI 316 steel support 8 mm thick and 60 mm in diameter has 19 strips of MgB in the form of concentric circles embedded on both surfaces 2The superconducting closed track is 0.5mm thick, the diameter ranges from 52mm to 10mm, the depth is 3-4mm, and the central cylinder has a diameter of 5mm. The superconducting element was prepared as in Example 2, and its residual magnetic field flux density was measured at its center at a distance of 1 mm from the surface. It exhibits a continuous magnetic flux density of 1 Tesla at a temperature of 21K.

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Abstract

A superconductive element and a relative preparation process are described. The superconductive element comprises a rigid support made of a non-superconductive material, said support comprising at least one superconductive track formed by a groove containing a superconductive material having a density equal to at least 85% of the value of its theoretical density, and the process for producing said element. The present invention also relates to the possible uses of the superconductive elements, and also to superconductive devices comprising said superconductive elements.

Description

technical field [0001] The present invention relates to superconducting elements and related preparation methods. [0002] The invention belongs to the technical field of superconducting materials. Background technique [0003] In the different industrial applications in which superconducting materials are used, it is necessary to ensure that these materials have suitable thermal and mechanical stability properties in addition to specific electrical functionality. [0004] In the current state of the art, superconducting materials are usually produced in the form of wires, thick or thin strips or massive bodies. Wires and bars, generally having a thickness of less than 1 mm, are assembled with supports made of metal or non-superconducting material of the electrically insulating type. The function of this support is to impart suitable mechanical strength properties to the superconducting material, if necessary, in addition to suitable electrical and thermal properties. How...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L39/00H01L39/04H01L39/24H01F6/00
CPCH01L39/16C04B35/547H01L39/141H01L39/2487C22C28/00H01L39/14C04B2235/3213C04B2235/77C04B35/58057C04B2235/3272H01L39/24C04B35/45H01L39/2477C22C38/00H10N60/202H10N60/20H10N60/30H10N60/01H10N60/0772H10N60/0856Y10T29/49014Y10T428/24612Y10T428/24322
Inventor G·琼基
Owner EHDISON SPA
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