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Method for producing a superconductive element and superconductive element thereby

A superconducting wire, superconducting technology, applied in the direction of superconducting devices, permanent superconducting devices, electrical components, etc., can solve the problem that mechanical contact is not enough

Active Publication Date: 2011-06-08
MMC COPPER PROD OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this mechanical contact is not sufficient because especially magnetic resonance imaging applications require good thermal conductivity and good electrical conductivity between the wire and the tank wall

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] In a preferred embodiment of the invention, the superconducting wire is coated with a solder such as tin and tin-based lead-free alloys prior to placement in the bath of the copper member. Pure tin has a phase transition and becomes brittle at low temperatures. Therefore, it is preferred to use tin-based lead-free alloys, such as tin-silver binary alloys containing 0.1-20 wt% silver, preferably 0.1-5 wt% silver. Other preferred tin-based lead-free alloys are, for example, binary alloys such as tin-copper, tin-zinc, tin-antimony, tin-bismuth and tin-indium. Preferred tin-based lead-free alloys are moreover ternary and quaternary alloys and alloys containing even four alloying components selected from copper, silver, zinc, antimony, bismuth and indium such that each The content of the alloying component is 0.1-20 wt%, preferably 0.1-5 wt%, the rest is tin and possible impurities.

[0053] It is also advantageous to use as the preferred tin-based lead-free alloy a tin-bi...

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PUM

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Abstract

The invention relates to a method for producing a superconductive element to be used as a wire-in-channel superconductor in magnetic resonance imaging (MRI) and in nuclear magnetic resonance (NMR) applications, which superconductive element contains a superconductive wire and a copper component having a longitudinal groove and the superconductive wire being positioned in the groove. In order to produce the wire-in-channel superconductive element by a mechanical contact between the superconductive wire and a wall of the groove in the copper component, at least one contact surface is coated with a lead free solder material before having the mechanical contact. In order to enhance the thermal and electrical conduction and to create a bond between the said components the soldering material isfused in annealing process step.

Description

technical field [0001] The present invention relates to a method of manufacturing a superconducting element, and to a superconducting element manufactured by said method, wherein the superconductor will be used as a slot-embedded wire in magnetic resonance imaging (MRI) and nuclear magnetic resonance (NMR) applications. in-channel) superconductor. Background technique [0002] Wire-inlaid slot (WIC) superconductors have been developed for MRI and NMR applications because these applications require long element lengths, high element weights and relatively high volume fractions of copper in the conductors. The preferred solution is to process the expensive superconducting composite wire and copper components separately and join them together at the final processing stage to produce slot-inlaid wire conductors. For this bonding between the copper member and the superconducting wire, a longitudinal groove for embedding the superconducting wire is formed in the copper member. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L39/24H10N60/01H01LH10N60/20
CPCH01L39/2403H01L39/14H10N60/20H10N60/0128H10N60/01
Inventor 尤卡·索默科斯基
Owner MMC COPPER PROD OY