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MgB2 superconductive wire material, and production method therefor

US10134508B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-10134508-B2
Application numberUS-201315038346-A
CountryUS
Kind codeB2
Filing dateDec 10, 2013
Priority dateDec 10, 2013
Publication dateNov 20, 2018
Grant dateNov 20, 2018

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

An MgB 2 superconducting wire includes a core containing MgB 2 and a metal sheath which surrounds the core. The core includes at least a first MgB 2 core positioned on the center side, and a second MgB 2 core positioned outside the first MgB 2 core, and the density of the second MgB 2 core is lower than the density of the first MgB 2 core.

First claim

Opening claim text (preview).

The invention claimed is: 1. An MgB 2 superconducting wire comprising a core containing MgB 2 and a metal sheath which surrounds the core, wherein the core comprises at least a first MgB 2 core positioned on the center side, and a second MgB 2 core positioned outside the first MgB 2 core, and the density of the second MgB 2 core is lower than the density of the first MgB 2 core, and the density of the second MgB 2 is less than 70% of the true density of MgB 2 , there are voids which extend in the longitudinal direction of the MgB 2 superconducting wire, in the first MgB 2 core, and the void in the first MgB 2 core has the same shape as a void present in the second MgB 2 core, and the ratio of the void in the first MgB 2 core is smaller than the ratio of the void in the second MgB 2 core. 2. The MgB 2 superconducting wire according to claim 1 , wherein the density of the first MgB 2 core is 70% or more of the true density of MgB 2 (2.62 g/cm). 3. The MgB 2 superconducting wire according to claim 1 , wherein the cross sectional area of the first MgB 2 core is 50% or more of the whole cross sectional area of the core. 4. The MgB 2 superconducting wire according to claim 1 , wherein the ratio of the void in the first MgB 2 core is 20% or less. 5. The MgB 2 superconducting wire according to claim 1 , wherein the MgB 2 superconducting wire is used as a superconducting cable or a superconducting magnet.

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Frequently asked questions

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What does patent US10134508B2 cover?
An MgB 2 superconducting wire includes a core containing MgB 2 and a metal sheath which surrounds the core. The core includes at least a first MgB 2 core positioned on the center side, and a second MgB 2 core positioned outside the first MgB 2 core, and the density of the second MgB 2 core is lower than the density of the first MgB 2 core.
Who is the assignee on this patent?
Hitachi Ltd
What technology area does this patent fall under?
Primary CPC classification H01B12/04. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Nov 20 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).