CN119340019B - Niobium three-tin superconducting wire and assembly structure thereof - Google Patents
Niobium three-tin superconducting wire and assembly structure thereof Download PDFInfo
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- CN119340019B CN119340019B CN202411907107.4A CN202411907107A CN119340019B CN 119340019 B CN119340019 B CN 119340019B CN 202411907107 A CN202411907107 A CN 202411907107A CN 119340019 B CN119340019 B CN 119340019B
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- 239000010955 niobium Substances 0.000 title claims description 44
- 229910052758 niobium Inorganic materials 0.000 title claims description 6
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 title description 4
- 230000004888 barrier function Effects 0.000 claims abstract description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- 239000010949 copper Substances 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 11
- 239000011159 matrix material Substances 0.000 claims description 11
- 239000000956 alloy Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- HFYPIIWISGZGRF-UHFFFAOYSA-N [Nb].[Sn].[Sn].[Sn] Chemical compound [Nb].[Sn].[Sn].[Sn] HFYPIIWISGZGRF-UHFFFAOYSA-N 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 150000002821 niobium Chemical class 0.000 claims description 2
- 239000003381 stabilizer Substances 0.000 claims 1
- KJSMVPYGGLPWOE-UHFFFAOYSA-N niobium tin Chemical compound [Nb].[Sn] KJSMVPYGGLPWOE-UHFFFAOYSA-N 0.000 abstract description 3
- 229910000657 niobium-tin Inorganic materials 0.000 abstract 2
- 238000002955 isolation Methods 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 19
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 101100334117 Caenorhabditis elegans fah-1 gene Proteins 0.000 description 1
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B12/00—Superconductive or hyperconductive conductors, cables, or transmission lines
- H01B12/02—Superconductive or hyperconductive conductors, cables, or transmission lines characterised by their form
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
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Abstract
本发明属于超导线材技术领域，涉及一种铌三锡超导线材及其组装结构。本发明提供了一种铌三锡超导线材的组装结构，所述组装结构包括：多个六方形亚组元、多个扇形亚组元和钻有多个六方形孔的Ta管；所述钻有多个六方形孔的Ta管中插入所述六方形亚组元，所述Ta管的周围围绕为多个所述扇形亚组元构成的环状亚组元，所述环状亚组元的外圈依次由阻隔层和无氧铜管包覆。本发明提供的组装结构，一是有利于亚组元内芯丝变形均匀和隔绝亚组元间的芯丝影响，降低Nb3Sn超导线材的损耗，二是使得各亚组元内部的Sn能与Nb充分反应，确保Nb3Sn超导相的充分生成，提升Nb3Sn超导线材的临界电流密度。
The present invention belongs to the technical field of superconducting wires, and relates to a niobium-tin superconducting wire and its assembly structure. The present invention provides an assembly structure of a niobium-tin superconducting wire, the assembly structure comprising: a plurality of hexagonal subcomponents, a plurality of fan-shaped subcomponents, and a Ta tube drilled with a plurality of hexagonal holes; the hexagonal subcomponents are inserted into the Ta tube drilled with a plurality of hexagonal holes, the Ta tube is surrounded by a ring-shaped subcomponent composed of a plurality of fan-shaped subcomponents, and the outer ring of the ring-shaped subcomponent is sequentially coated by a barrier layer and an oxygen-free copper tube. The assembly structure provided by the present invention is, firstly, conducive to uniform deformation of the core wire inside the subcomponent and isolation of the core wire influence between the subcomponents, reducing the loss of the Nb 3 Sn superconducting wire, and secondly, enabling the Sn inside each subcomponent to fully react with Nb, ensuring the full generation of the Nb 3 Sn superconducting phase, and improving the critical current density of the Nb 3 Sn superconducting wire.
Description
Technical Field
The invention belongs to the technical field of superconducting wires, and relates to a niobium three-tin superconducting wire and an assembly structure thereof.
Background
Niobium three-tin superconducting wire (Nb 3 Sn superconducting wire) is widely applied to large-scale scientific devices such as particle accelerators and nuclear fusion experimental reactors, and is also applied to medical imaging equipment such as nuclear magnetic resonance imagers, and has wide application and development in the field of superconducting materials. Among them, the internal tin method is an important technology for preparing Nb 3 Sn superconducting wires, and is the primary choice for preparing low-cost high-current-density Nb 3 Sn superconducting wires at present.
When preparing the Nb 3 Sn superconducting wire by an internal tin method, a Nb rod is generally inserted into a porous copper ingot obtained by a drilling method, a CuNb composite rod is obtained after extrusion, then a Sn core rod is inserted into a CuNb composite tube after central drilling, a subcomponent is obtained through multi-pass drawing, finally a barrier layer and the subcomponent are assembled into an oxygen-free copper tube, a finished superconducting wire is obtained through multi-pass drawing forming, and finally a Nb 3 Sn phase is generated through a heat treatment reaction. However, the Nb 3 Sn superconducting wire prepared by the method is easy to cause serious core wire lap joint due to uneven deformation of the subcomponents in the drawing process, so that the loss of the wire is higher. Meanwhile, in the final heat treatment reaction, sn in each sub-component may diffuse into an adjacent sub-component, resulting in the possibility that the lack of Sn inside the sub-component causes Nb to react insufficiently with Sn, thereby resulting in the wire rod failing to reach a critical current density level designed in advance.
Disclosure of Invention
The invention aims to solve the technical problems that the assembly structure of the Nb 3 Sn superconducting wire prepared by an internal tin method is easy to deform unevenly, sn diffuses to adjacent sub-components and has insufficient reaction and the like. In this regard, the present invention provides a niobium tri-tin superconducting wire and an assembly structure thereof to address such a need in the art.
In one aspect, the present invention relates to an assembled structure of a niobium tri-tin superconducting wire, the assembled structure comprising a plurality of hexagonal subunits, a plurality of fan-shaped subunits, and a Ta tube drilled with a plurality of hexagonal holes;
the hexagonal subcomponent is inserted into the Ta pipe with a plurality of hexagonal holes, the circumference of the Ta pipe surrounds an annular subcomponent formed by a plurality of fan-shaped subcomponents, and the outer ring of the annular subcomponent is sequentially coated by a barrier layer and a stable matrix.
Further, in the assembled structure of the niobium-three-tin superconducting wire provided by the invention, the hexagonal subcomponent or the fan-shaped subcomponent is a CuNb composite tube with a Sn2Ti alloy rod inserted into the center.
Further, in the assembled structure of the niobium-three-tin superconducting wire provided by the invention, the mass ratio of Nb to Sn in the hexagonal sub-component or the fan-shaped sub-component is 1.5-4.0.
Further, in the assembled structure of the niobium tri-tin superconducting wire provided by the invention, the hexagonal holes in the Ta tube drilled with a plurality of hexagonal holes are not connected with each other with Ta spacing.
Further, in the assembly structure of the niobium-three-tin superconducting wire provided by the invention, the adjacent spacing of the hexagonal holes is 5-15 mm.
Further, in the assembly structure of the niobium-three-tin superconducting wire provided by the invention, the diameter of the Ta pipe drilled with a plurality of hexagonal holes is phi 20-45 mm, and the opposite side size of the cross section of each hexagonal hole is H5-H15 mm.
Further, in the assembled structure of the niobium-three-tin superconducting wire provided by the invention, the barrier layer is made of Ta.
In the assembly structure of the niobium-three-tin superconducting wire provided by the invention, the stable matrix is made of oxygen-free copper.
In another aspect, the invention relates to a niobium-three-tin superconducting wire, which is prepared from the assembled structure of the niobium-three-tin superconducting wire through multi-pass stretch forming and heat treatment.
Further, in the niobium-three-tin superconducting wire provided by the invention, the multi-pass stretching speed is 5-50 m/min, and the processing rate of each pass is 5-30%.
Compared with the prior art, the technical scheme provided by the invention has at least the following beneficial effects or advantages:
the invention optimizes the assembly structure of the Nb 3 Sn superconducting wire prepared by the existing internal tin method, and separates hexagonal subcomponents from each other in a mode of inserting a drilling Ta pipe. Firstly, the restraint of introducing Ta around the subunits is beneficial to uniform deformation of the subunits in the stretching process, hysteresis loss increase caused by nonuniform deformation of inner core wires of the subunits is avoided, secondly, coupling loss caused by the influence of the core wires between hexagonal subunits and annular subunits is avoided, so that loss is reduced, thirdly, ta is used for separating each hexagonal subunit from each other, ta is used for separating each hexagonal subunit from each annular subunit, sn in the subunits is prevented from diffusing to the outside, sn in each subunit can fully react with Nb, sufficient generation of Nb 3 Sn superconducting phases is ensured, and critical current density of the Nb 3 Sn superconducting wire is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic cross-sectional structure of an assembled structure of a niobium three-tin superconducting wire provided by the present invention.
The reference numerals indicate 1, a stable matrix, 2, a barrier layer, 3, a fan-shaped sub-component, 4, a drilled Ta pipe and 5, a hexagonal sub-component.
Detailed Description
The following describes the technical aspects of the present invention with reference to examples, but the present invention is not limited to the following examples. The experimental methods and the detection methods described in the examples are conventional methods unless otherwise specified, and the reagents and materials are commercially available. In the following examples, the percentages are by mass unless otherwise indicated. The proportions in the following examples are mass ratios unless otherwise specified.
The invention provides a preparation method of an internal tin niobium three-tin superconducting wire, which comprises the following steps:
And step1, inserting an Sn2Ti alloy rod after drilling the center of the multi-core CuNb composite rod, and stretching for multiple times to prepare a hexagonal subgroup 5 and a fan-shaped subgroup 3, wherein the mass ratio of Nb/Sn is 1.5-4.0.
And 2, selecting a Ta rod with the diameter phi of 20-45 mm, and drilling a plurality of hexagonal through holes along the length direction of the Ta rod by using a deep hole drilling method, wherein the opposite side size of the cross section of each hexagonal through hole is H5-H15 mm, so as to obtain a drilled Ta pipe 4.
Step 3, loading the hexagonal sub-components 5 into the through holes of the drilled Ta pipe 4 so that the hexagonal sub-components 5 are separated from each other by Ta. The sector-shaped sub-components 3 uniformly surround the outer ring of the drilling Ta pipe 4 to form annular sub-components, the sector-shaped sub-components 3 in the annular sub-components are connected with each other, the sector-shaped sub-components 3 and the hexagonal sub-components 5 are separated by Ta, the outer ring of the annular sub-components is uniformly coated with the barrier layer 2, and then the annular sub-components are filled into the stable matrix 1 to obtain a final blank.
And 4, carrying out multi-pass stretch forming and heat treatment on the final blank to obtain the Nb 3 Sn superconducting wire, wherein the stretching speed is 5-50 m/min, the processing rate of each pass is 5-30%, and the heat treatment mode is that heat preservation is carried out for 100h at 575 ℃ and then heat preservation is carried out for 100h at 650 ℃.
Example 1
The embodiment provides a preparation process of a Nb 3 Sn superconducting wire.
In this embodiment, the barrier layer 2 is made of Ta, and the stabilizing substrate 1 is made of oxygen-free copper.
And (3) deep hole drilling is carried out on the center of the 200-core CuNb composite rod with the diameter phi of 55mm, the drilling hole diameter phi is 20mm, and the cleaned Sn2Ti alloy rod is inserted into the center drilling hole of the CuNb composite tube, so that a subcomponent blank is obtained. And carrying out multi-pass stretch forming and fixed-length cutting on the sub-component blank to obtain a hexagonal sub-component 5 and a fan-shaped sub-component 3, wherein the Nb/Sn ratio is 2.0. The working rate of each pass of the sub-component stretching is 15%, the stretching speed is 20m/min, and the cut-to-length is 1000mm. And selecting a Ta rod with the diameter phi 35 and the length of 1000mm, drilling 7 hexagonal through holes with the opposite side dimension H7mm on the cross section, and obtaining the drilled Ta tube 4 with the layer spacing of 5mm. The drilled Ta pipe 4, the hexagonal sub-component 5, the sector sub-component 3, the barrier layer 2 and the stable matrix 1 are subjected to cleaning treatment, and the cross section according to figure 1 is assembled, wherein the hexagonal sub-component 5 is inserted into a through hole of the drilled Ta pipe 4, the sector sub-component 3 uniformly surrounds the outer ring of the drilled Ta pipe 4 to form an annular sub-component, the sector sub-components 3 in the annular sub-component are connected with each other, the sector sub-component 3 and the hexagonal sub-component 5 are separated by Ta, the annular sub-component outer ring is uniformly coated with the barrier layer 2, and then the annular sub-component is filled into the stable matrix 1, so that a final blank is obtained. After multi-pass drawing, the drawing speed is 20m/min, the processing rate of each pass is 10%, and the Nb 3 Sn superconducting wire is obtained.
The performance comparison is that the heat treatment and performance detection are carried out on the obtained Nb 3 Sn superconducting wire, the heat treatment system is 575 ℃ per 100h+650 ℃ per 100h, the measured hysteresis loss is 264mJ/cm 3 (4.2K, 3T), the hysteresis loss of the internal tin Nb 3 Sn superconducting wire prepared by the prior art is generally 400-600 mJ/cm 3, compared with the loss in the prior art, the hysteresis loss of the internal tin Nb 3 Sn superconducting wire prepared by the prior art is obviously reduced, meanwhile, the core wire area reacted with Sn in the superconducting wire prepared by the prior art is improved by about 5%, and the measured critical current density is 1162A/mm 2 (12T), compared with the wire prepared by the prior art, the hysteresis loss of the internal tin method Nb 3 Sn superconducting wire is improved by about 6%.
Example 2
The embodiment provides a preparation process of a Nb 3 Sn superconducting wire.
In this embodiment, the barrier layer 2 is made of Ta, and the stabilizing substrate 1 is made of oxygen-free copper.
Deep hole drilling is carried out on the center of a 220-core CuNb composite rod with the diameter phi of 60mm, the drilling hole diameter phi is 25mm, and the cleaned Sn2Ti alloy rod is inserted into the center drilling hole of the CuNb composite tube, so that a subcomponent blank is obtained. And carrying out multi-pass stretch forming and fixed-length cutting on the sub-component blank to obtain a hexagonal sub-component 5 and a fan-shaped sub-component 3, wherein the Nb/Sn ratio is 2.7. The working rate of each pass of the sub-component stretching is 15%, the stretching speed is 20m/min, and the cut-to-length is 1000mm. And selecting a Ta rod with the diameter phi 43 and the length of 1000mm, drilling 7 hexagonal through holes with the opposite side dimension of H9mm on the cross section, and obtaining the drilled Ta tube 4 with the layer spacing of 5mm. The drilled Ta pipe 4, the hexagonal sub-component 5, the sector sub-component 3, the barrier layer 2 and the stable matrix 1 are subjected to cleaning treatment, and the cross section according to figure 1 is assembled, wherein the hexagonal sub-component 5 is inserted into a through hole of the drilled Ta pipe 4, the sector sub-component 3 uniformly surrounds the outer ring of the drilled Ta pipe 4 to form an annular sub-component, the sector sub-components 3 in the annular sub-component are connected with each other, the sector sub-component 3 and the hexagonal sub-component 5 are separated by Ta, the annular sub-component outer ring is uniformly coated with the barrier layer 2, and then the annular sub-component is filled into the stable matrix 1, so that a final blank is obtained. After multi-pass drawing, the drawing speed is 25m/min, the processing rate of each pass is 15%, and the Nb 3 Sn superconducting wire is obtained.
The performance comparison is that the heat treatment and performance detection are carried out on the obtained Nb 3 Sn superconducting wire, the heat treatment system is 575 ℃ per 100h+650 ℃ per 100h, the measured hysteresis loss is 241mJ/cm 3 (4.2K, 3T), the hysteresis loss of the internal tin Nb 3 Sn superconducting wire prepared by the prior art is generally 400-600 mJ/cm 3, compared with the loss in the prior art, the hysteresis loss of the internal tin Nb 3 Sn superconducting wire prepared by the prior art is obviously reduced, meanwhile, the core wire area reacted with Sn in the superconducting wire prepared by the prior art is improved by about 6%, the measured critical current density is 1178A/mm 2 (12T), and compared with the wire prepared by the prior art, the hysteresis loss of the internal tin Nb 3 Sn superconducting wire is improved by about 7%.
Example 3
The embodiment provides a preparation process of a Nb 3 Sn superconducting wire.
In this embodiment, the barrier layer 2 is made of Ta, and the stabilizing substrate 1 is made of oxygen-free copper.
Deep hole drilling is carried out on the center of a 254-core CuNb composite rod with the diameter of phi 65mm, the drilling hole diameter is phi 30mm, and the cleaned Sn2Ti alloy rod is inserted into the center drilling hole of the CuNb composite tube, so that a subcomponent blank is obtained. And carrying out multi-pass stretch forming and fixed-length cutting on the sub-component blank to obtain a hexagonal sub-component 5 and a fan-shaped sub-component 3, wherein the Nb/Sn ratio is 3.0. The working rate of each pass of the sub-component stretching is 20%, the stretching speed is 30m/min, and the cut-to-length is 1500mm. Selecting a Ta rod with the diameter phi 45 and the length of 1000mm, drilling 7 hexagonal through holes with the opposite side size of H9.5mm on the cross section, and obtaining the drilled Ta tube 4 with the layer spacing of 5 mm. The drilled Ta pipe 4, the hexagonal sub-component 5, the sector sub-component 3, the barrier layer 2 and the stable matrix 1 are subjected to cleaning treatment, and the cross section according to figure 1 is assembled, wherein the hexagonal sub-component 5 is inserted into a through hole of the drilled Ta pipe 4, the sector sub-component 3 uniformly surrounds the outer ring of the drilled Ta pipe 4 to form an annular sub-component, the sector sub-components 3 in the annular sub-component are connected with each other, the sector sub-component 3 and the hexagonal sub-component 5 are separated by Ta, the annular sub-component outer ring is uniformly coated with the barrier layer 2, and then the annular sub-component is filled into the stable matrix 1, so that a final blank is obtained. After multi-pass drawing, the drawing speed is 40m/min, the processing rate of each pass is 25%, and the Nb 3 Sn superconducting wire is obtained.
The performance comparison is that the heat treatment and performance detection are carried out on the obtained Nb 3 Sn superconducting wire, the heat treatment system is 575 ℃ per 100h+650 ℃ per 100h, the measured hysteresis loss is 226mJ/cm 3 (4.2K, 3T), the hysteresis loss of the internal tin Nb 3 Sn superconducting wire prepared by the prior art is generally 400-600 mJ/cm 3, compared with the loss in the prior art, the hysteresis loss of the internal tin Nb 3 Sn superconducting wire prepared by the prior art is obviously reduced, meanwhile, the core wire area reacted with Sn in the superconducting wire prepared by the prior art is improved by about 7%, the measured critical current density is 1208A/mm 2 (12T), and compared with the wire prepared by the prior art, the hysteresis loss of the internal tin Nb 3 Sn superconducting wire is improved by about 10%.
As described above, the basic principles, main features and advantages of the present invention are better described. The above examples and descriptions are merely illustrative of preferred embodiments of the present invention, and the present invention is not limited to the above examples, and various changes and modifications to the technical solution of the present invention by those skilled in the art should fall within the scope of protection defined by the present invention without departing from the spirit and scope of the present invention.
Claims (7)
1. An assembling structure of a niobium three-tin superconducting wire is characterized by comprising a plurality of hexagonal subunits, a plurality of fan-shaped subunits and a Ta tube drilled with a plurality of hexagonal holes;
The hexagonal subcomponent is inserted into the Ta pipe with a plurality of hexagonal holes, the circumference of the Ta pipe is surrounded by an annular subcomponent formed by a plurality of fan-shaped subcomponents, and the outer ring of the annular subcomponent is sequentially coated by a barrier layer and a stable matrix;
a CuNb composite tube with the hexagonal sub-component or the fan-shaped sub-component as a center and inserted into an Sn2Ti alloy rod;
The hexagonal holes in the Ta pipe drilled with the plurality of hexagonal holes are separated and disconnected by Ta, and the adjacent distance between the hexagonal holes is 5-15 mm.
2. The assembly structure of the niobium-three-tin superconducting wire according to claim 1, wherein a mass ratio of Nb to Sn in the hexagonal subcomponent or the fan-shaped subcomponent is 1.5 to 4.0.
3. The assembly structure of the niobium-three-tin superconducting wire according to claim 1, wherein the diameter of the Ta pipe drilled with a plurality of hexagonal holes is phi 20-45 mm, and the opposite side dimensions of the sections of the hexagonal holes are H5-H15 mm.
4. The assembly structure of the niobium-three-tin superconducting wire as claimed in claim 1, wherein the barrier layer is made of Ta.
5. The assembly structure of the niobium-three-tin superconducting wire according to claim 1, wherein the material of the stabilizer substrate is oxygen-free copper.
6. A niobium-three-tin superconducting wire, characterized in that the assembly structure of the niobium-three-tin superconducting wire is prepared by multi-pass stretch forming and heat treatment.
7. The niobium tri-tin superconducting wire of claim 6, wherein the multi-pass drawing has a drawing speed of 5-50 m/min and a working rate per pass of 5-30%.
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| CN117912763A (en) * | 2023-12-29 | 2024-04-19 | 西部超导材料科技股份有限公司 | Nb (Nb) alloy3Subcomponent of Sn superconducting wire and preparation method of superconducting wire |
| CN118299116A (en) * | 2024-05-08 | 2024-07-05 | 西安聚能超导线材科技有限公司 | Thermal stability type low-loss Nb3Sn superconducting wire preparation method |
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| JP4414613B2 (en) * | 2001-06-22 | 2010-02-10 | 住友電気工業株式会社 | Superconducting cable phase separation jig |
| JP4298450B2 (en) * | 2003-09-24 | 2009-07-22 | 住友電気工業株式会社 | Superconducting cable terminal structure |
| JP2006339041A (en) * | 2005-06-02 | 2006-12-14 | Mitsubishi Electric Corp | Manufacturing method of Nb3Sn superconducting wire |
| CN105513712B (en) * | 2015-11-25 | 2017-03-22 | 西部超导材料科技股份有限公司 | Preparation method of high-critical-current-density Nb3Sn superconductive wire rod |
| CN110580985A (en) * | 2018-06-11 | 2019-12-17 | 西部超导材料科技股份有限公司 | Method for preparing high critical current niobium-tin superconducting strand in external blocking mode |
| CN113096881B (en) * | 2021-04-16 | 2022-11-29 | 西部超导材料科技股份有限公司 | Preparation method of high-strength high-critical-current niobium-tin superconducting strand |
| CN118888208B (en) * | 2024-09-27 | 2024-12-17 | 西安聚能超导线材科技有限公司 | Internal tin method Nb3Preparation method of Sn superconducting wire |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117912763A (en) * | 2023-12-29 | 2024-04-19 | 西部超导材料科技股份有限公司 | Nb (Nb) alloy3Subcomponent of Sn superconducting wire and preparation method of superconducting wire |
| CN118299116A (en) * | 2024-05-08 | 2024-07-05 | 西安聚能超导线材科技有限公司 | Thermal stability type low-loss Nb3Sn superconducting wire preparation method |
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