JPS63164116A - Nb3sn compound superconductive wire - Google Patents
Nb3sn compound superconductive wireInfo
- Publication number
- JPS63164116A JPS63164116A JP61315022A JP31502286A JPS63164116A JP S63164116 A JPS63164116 A JP S63164116A JP 61315022 A JP61315022 A JP 61315022A JP 31502286 A JP31502286 A JP 31502286A JP S63164116 A JPS63164116 A JP S63164116A
- Authority
- JP
- Japan
- Prior art keywords
- loss
- nb3sn
- wire
- matrix
- population
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 150000001875 compounds Chemical class 0.000 title claims abstract description 20
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 20
- 239000000956 alloy Substances 0.000 claims abstract description 20
- 229910016347 CuSn Inorganic materials 0.000 claims abstract description 7
- 239000011159 matrix material Substances 0.000 claims description 21
- 229910052785 arsenic Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910000657 niobium-tin Inorganic materials 0.000 abstract description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005491 wire drawing Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 229910001245 Sb alloy Inorganic materials 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229910002059 quaternary alloy Inorganic materials 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
Classifications
-
- 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
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は交流用超電導コイルの巻線材として用いられ
るＮｂ、ｓｎ化合物超電導線に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a Nb, sn compound superconducting wire used as a winding material for an AC superconducting coil.
最近９発電機、ｆ圧器などの交流電力機器において、効
率の向上、装置の小形化を図るため超電導化の要求が高
まっている。このような装置に適用される超電導マグネ
ットの巻線材としては交流損失の小さい超電導線が不可
欠である。現在用いられているＮ Ｊ ８ ｎ超電導線
は、特公昭５４−２４１０９号公報に示されるように。Recently, there has been an increasing demand for superconductivity in alternating current power equipment such as generators and f-pressure generators in order to improve efficiency and downsize the equipment. A superconducting wire with low AC loss is essential as a winding material for a superconducting magnet used in such devices. The currently used NJ8n superconducting wire is as shown in Japanese Patent Publication No. 54-24109.
複数のフィラメント状のＮｂ、８ｎ 超電導化合物が、
８ｎ濃度が０．１〜５ｗｔ％程度のａｕｓｎ合金母相中
に埋設されている構造である。ｉ＠３図に従来のＮｂ３
Ｓｎ超電導線の横断面を示す。図において、（１）は０
ｕ８ｎ合金層、（２）はＮ ｂｌ ８ ｎフィラメント
を示している。A plurality of filamentary Nb, 8n superconducting compounds are
It has a structure in which the 8n concentration is embedded in the ausn alloy matrix having a concentration of about 0.1 to 5 wt%. Conventional Nb3 in i@3 diagram
A cross section of a Sn superconducting wire is shown. In the figure, (1) is 0
u8n alloy layer, (2) shows N bl 8 n filament.
交流で用いる超電導線には、できるだけ交流損失が少な
い仁とが必要である。交流損失は。Superconducting wires used in alternating current must have wires with as little alternating current loss as possible. AC loss.
主として履歴損失と結合損失からなっている。It mainly consists of history loss and combination loss.
前者はフィラメント径が細い程小さくなる。一方、後者
は母相を通してフィラメント同志の結合電流が流れるた
めに起きるもので、母相の電気抵抗が大きいものほど損
失は小さくなる。The former becomes smaller as the filament diameter becomes smaller. On the other hand, the latter occurs because a coupled current between the filaments flows through the matrix, and the larger the electrical resistance of the matrix, the smaller the loss.
しかしながら、前述のＮｂ、８ｎ超電導線では、母相が
ＯｕＳ ｎ合金であるため電気抵抗が低く、フィラメン
ト同志の電気的結合が起り、結合損失が犬きくなるとい
う欠点があった。However, the above-mentioned Nb, 8n superconducting wire has the disadvantage that since the matrix is an OuSn alloy, the electrical resistance is low, and electrical coupling occurs between the filaments, resulting in high coupling loss.
この発明は、このような問題点を解決するためになされ
たもので、交流損失が少ないＮｔＩ３Ｓｎ化合物超電導
線を得ることを目的とする。This invention was made to solve these problems, and aims to obtain an NtI3Sn compound superconducting wire with low AC loss.
この発明のＮｂ３Ｓｎ化合物超電導線は、母相と母相に
埋設された複数のフィラメント状のＮｂ、８ｎ化合物か
らなり、母相が少なくともｓｂｉ３０ｗｔ％以下含有す
るＣｕＳｎ系合金のものである。The Nb3Sn compound superconducting wire of the present invention is composed of a matrix and a plurality of filamentary Nb, 8n compounds embedded in the matrix, and the matrix is a CuSn alloy containing at least 30 wt% of sbi.
この発明においては、フィラメント状のＮｂ。 In this invention, filamentary Nb.
Ｓｎ化合物が埋設された母相を少なくともＳｂを３０ｗ
ｔ％以下含有するＣｕＳｎ系合金とすることによって、
母相の電気抵抗が増加して、交流損失が著しく小さいＮ
ｈ、Ｓｎ化合物超電導線を優ることができる。The mother phase in which the Sn compound is embedded contains at least 30w of Sb.
By using a CuSn-based alloy containing t% or less,
The electrical resistance of the matrix increases and the AC loss is significantly reduced.
h, can be superior to Sn compound superconducting wires.
実施例 １
まず、母相がＯｕ−５ｗ１％Ｓｂ合金（３）でこの母相
に１８００本のＮｂフィラメント（４）が埋設され８中
夫に中空部を持つ複合多芯チューブを用意した。次に、
８ｎ（５）を用意し、これをチューブの中空部に挿入し
、第１図にその断面を示すような複合棒を作成した。そ
して、この複合棒をすべて冷間引抜加工で直径０．１
ｒｍまで伸線した。伸線加工は中間焼鈍の必要もなく安
定になされた。また、最終寸法でＮｂフィラメントの径
は約１μ悔であっｆｃｏさらに、この線を素線として７
本からなる同心撚線を作成した。Example 1 First, a composite multicore tube was prepared in which the parent phase was an Ou-5w1%Sb alloy (3), 1800 Nb filaments (4) were embedded in the parent phase, and the tube had a hollow part in 8 cores. next,
8n (5) was prepared and inserted into the hollow part of the tube to create a composite rod whose cross section is shown in FIG. Then, all of these composite rods were cold drawn to a diameter of 0.1 mm.
The wire was drawn to rm. The wire drawing process was stable without the need for intermediate annealing. In addition, the diameter of the Nb filament in the final dimension was about 1 μm, and this wire was used as a bare wire with a diameter of 7 μm.
Created a concentric strand consisting of books.
次に、この撚線を不活性ガス雰囲気中で６７５゛Ｃで３
０時間熱処理することによって、８ｎをＣｕｒｂ合金母
相中に拡散させ、Ｎｂフィラメントの表面にＮｂ３Ｓｎ
化合物を生成させた。第２図に熱処理後の素線の横断面
を示す。母相はＳｎの拡散によって０ｕ−８ｎ ｓｂ
金合金６）になっており１組成分析の結果では、Ｏｕ−
４ｗｔ％ａｎ−４．６ｗｔ％ｓｂで６った。Next, this twisted wire was heated at 675°C for 3 hours in an inert gas atmosphere.
By heat-treating for 0 hours, 8n is diffused into the Curb alloy matrix, and Nb3Sn is formed on the surface of the Nb filament.
The compound was produced. FIG. 2 shows a cross section of the wire after heat treatment. The matrix becomes 0u-8n sb due to the diffusion of Sn.
It is a gold alloy6), and according to the results of compositional analysis, Ou-
It was 6 at 4wt%an-4.6wt%sb.
このようにして得られた線について、液体ヘリウム温度
での印加磁界中の臨界電流を測定した。これによると、
臨界電流は、７Ｔで５３Ａでめった。この値は従来の母
相がブロンズ（ＣＵ−４ｗｔ％Ｓｎ合金）である同一寸
法の線に比べると約１２チ増加していた。For the lines thus obtained, the critical current in an applied magnetic field at liquid helium temperature was measured. according to this,
The critical current was 53A at 7T. This value increased by about 12 inches compared to a conventional wire of the same size in which the parent phase was bronze (CU-4wt%Sn alloy).
次に、交流損失を知るために、 ５０１ｂ の周波数
の交流電流を通電して結合損失時定数を測定したところ
、従来の約ｉという小さい値となり、この発明の一実施
例の線が、交流損失が極めて小さく、商用周波数の交流
に対して安定であることがわかった。これは、交流を通
電した場合、従来の線では、第３図に示すように、超電
導フィラメント間の母相は比較的電気抵抗の低い０ｕ−
８ｎ合金であるためフィラメント同志の電気的結合が起
こって損失が大きくなったが。Next, in order to find out the AC loss, when an AC current with a frequency of 501b was applied and the coupling loss time constant was measured, it was a smaller value of about i than the conventional value. was found to be extremely small and stable against commercial frequency alternating current. This means that when current is applied to a conventional wire, the parent phase between the superconducting filaments has a relatively low electrical resistance, as shown in Figure 3.
Since it was an 8n alloy, electrical coupling occurred between the filaments, resulting in a large loss.
上記実施Ｖ」の線では、０ｕ−ａｎ合金にｓｂが固溶す
ることによって電気抵抗が約３倍高くなったため電気的
結合が起こりにくくなって交流損失が小さくなったと考
えられる。このようにこの発明の実施例の超電導線は交
流発電機、トランス、ａ気エネルギー貯蔵装置などの電
力機器流用超電導コイルの巻線材として特に優れている
。In the line of "Example V" above, it is considered that the electric resistance became about three times higher due to the solid solution of sb in the 0u-an alloy, making it difficult for electrical coupling to occur and reducing the AC loss. As described above, the superconducting wire of the embodiment of the present invention is particularly excellent as a winding material for superconducting coils used in power equipment such as alternating current generators, transformers, and a-air energy storage devices.
実施例 ２
次に、実施例１と同様の構成で、母相はＯｕ、また、中
心のＳｎ芯の代わりに８ｎ−２０ｗｔ％ｓｈ合金棒を用
いた。伸線加工は非常に容易に熱
行うことができ、最終寸法でＮｂ、８ｎ生成処理を行な
って、Ｎｂ、ａｎ超電導線ｔ−優之。この場合にも、実
施例１と同様に、臨界電流特性の向上と交流損失の低下
の効果があったが、特に。Example 2 Next, the structure was the same as in Example 1, except that the parent phase was O and an 8n-20wt% SH alloy rod was used instead of the Sn core at the center. The wire drawing process can be carried out very easily by heat, and the final size can be subjected to Nb, 8n generation treatment to produce Nb, an superconducting wire T-Yuyuki. In this case as well, as in Example 1, there were effects of improving critical current characteristics and reducing AC loss, especially.
交流損失は実施例１より約３０チ小さかつ友。The AC loss is about 30 inches smaller than that of Example 1.
これは、生成熱処理後の母相がＯｕ−４ｗｔ％８ｎ −
７，４ｗｔ％８ｂの４元合金となって、母相の電気抵抗
が実施例１よりもさらに約３０チ低下していたためであ
る。This means that the parent phase after the formation heat treatment is Ou-4wt%8n-
This is because a quaternary alloy containing 7.4 wt % 8b was formed, and the electrical resistance of the matrix was further reduced by about 30 inches compared to Example 1.
また、母相の電気抵抗を上げ、さらに交流損失を低下さ
せるために母相の（３ｕ−８ｎ−８ｂ合金に添加する元
素としては、Ａｓ、ｒｅ、Ｎｉなど力５有効でおった。In addition, in order to increase the electrical resistance of the matrix and further reduce AC loss, elements such as As, RE, and Ni were added to the matrix (3u-8n-8b alloy).
また、ベースとなる０ｕ８ｎ合金における８ｎ （１９
１度は、高いほど母相の電気抵抗が高くなり交流損失が
低下するが、臨界電流特性を考慮すると１５ｗｔ％以下
が望ましい。In addition, 8n (19
The higher the degree is, the higher the electric resistance of the matrix becomes and the lower the AC loss is, but in consideration of the critical current characteristics, it is preferably 15 wt% or less.
上記の実施例で述べたように、この発明の匁果は明らか
であるが、従来のＮｂ、８ｎ超電導線で臨界電流特性の
改善効果が認められているＩＩ、 Ｇａ、 ’ｒａ
、 Ｔ；などの元素をこの発明の実施例の線の８ｎｇ
、Ｃｕ母相、Ｎｂフィラメントにさらに添加することは
従来の線と同様に効果がある。As described in the above examples, the advantages of this invention are obvious, but the improvement effect of critical current characteristics has been recognized in conventional Nb, 8n superconducting wires.
, T; etc. in 8 ng of the wire of the embodiment of this invention.
, Cu matrix, and Nb filament are equally effective as conventional wires.
なお、交流損失及び臨界電流特性に対して。Regarding AC loss and critical current characteristics.
ａｕｓｎ系合金に含有するＳｂの量は３０ｗｔ ％Ｊ）
上でも交流損失は低下するが、臨界電流特性と伸線加工
性の大きな低下を招くので、 ０ｕ８ｎ、１合金に含
有するｓｂは３０ｗｔ％以下が適当でめる。ま７ｊ、
Ａｓ、 Ｆｅ、 Ｎｉについても、同様の理由で
１０ｗｔ％以下が適当である。The amount of Sb contained in the AUSN alloy is 30wt%J)
Although the AC loss is reduced in the above case, it causes a large decrease in critical current characteristics and wire drawability, so the sb contained in the 0u8n,1 alloy can be suitably 30 wt% or less. Ma7j,
As for As, Fe, and Ni, 10 wt% or less is also suitable for the same reason.
母相と母相に埋設された複数のフィラメント状のＮｈ、
ａｎ化合物からなるＮｂ、ａｎ化合物超電導線において
、母相が、少なくともＳｂを３０ｗｔ％以下含有する０
ｕａｎ系合金であることを特徴とするものを用いること
により、従来よりも、さらに臨界電流特性が良好で、交
流損失の少ない超電導線が得られるようになったので。The matrix and multiple filamentary Nh embedded in the matrix,
In the Nb, an compound superconducting wire made of an an compound, the parent phase contains at least 30 wt% or less of Sb.
By using a UAN-based alloy, it has become possible to obtain a superconducting wire with even better critical current characteristics and less AC loss than before.
１ 例えば変動磁界の大きい超電導コイルの運転が可
能になり、交流発電機、トランス、超電導磁気エネルギ
ー貯蔵装置などの各種電力用機器の効率化、小形化の推
進に役立つ。1. For example, it becomes possible to operate a superconducting coil with a large fluctuating magnetic field, which helps promote efficiency and miniaturization of various power equipment such as alternating current generators, transformers, and superconducting magnetic energy storage devices.
第１図及び第２図は、各々、この発明の一実施例に係わ
るＮｂｓｇｎ線の熱処理前と熱処理後の横断面、＄３図
は従来の超電導線の横断面図である。
図において、（３）はＣｕｒｂ合金、（４）はＮｂ フ
ィラメント、（６）は８ｎ、（６）はＣ１１−８ｎ−８
ｂ合金である。
なお、各図中同一符号は同−又は相当部分を示す。FIGS. 1 and 2 are cross-sectional views of an NBSGN wire according to an embodiment of the present invention before and after heat treatment, respectively, and FIG. 3 is a cross-sectional view of a conventional superconducting wire. In the figure, (3) is Curb alloy, (4) is Nb filament, (6) is 8n, (6) is C11-8n-8
b alloy. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (3)
Ｎｂ＿３Ｓｎ化合物からなるＮｂ＿３Ｓｎ化合物超電導
線において、母相が、少なくともＳｂを３０ｗｔ％以下
含有するＣｕＳｎ系合金であることを特徴とするＮｂ＿
３Ｓｎ化合物超電導線。(1) A Nb_3Sn compound superconducting wire consisting of a matrix and a plurality of filament-shaped Nb_3Sn compounds embedded in the matrix, characterized in that the matrix is a CuSn-based alloy containing at least 30 wt% or less of Sb.
3Sn compound superconducting wire.
なくとも一種を１０ｗｔ％以下含有するＣｕＳｎ系合金
である特許請求の範囲第１項記載のＮｂ＿３Ｓｎ化合物
超電導線。(2) The Nb_3Sn compound superconducting wire according to claim 1, wherein the parent phase is a CuSn-based alloy containing 10 wt% or less of at least one of As, Fe, and Ni in addition to Sb.
下である特許請求の範囲第１項又は第２項記載のＮｂ＿
３Ｓｎ化合物超電導線。(3) Nb_ according to claim 1 or 2, wherein the Sn concentration of the CuSn-based alloy of the matrix is 15 wt% or less
3Sn compound superconducting wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61315022A JPS63164116A (en) | 1986-12-25 | 1986-12-25 | Nb3sn compound superconductive wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61315022A JPS63164116A (en) | 1986-12-25 | 1986-12-25 | Nb3sn compound superconductive wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63164116A true JPS63164116A (en) | 1988-07-07 |
Family
ID=18060478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61315022A Pending JPS63164116A (en) | 1986-12-25 | 1986-12-25 | Nb3sn compound superconductive wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63164116A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991002364A1 (en) * | 1989-08-09 | 1991-02-21 | Tokai University | Superconductive wire |
-
1986
- 1986-12-25 JP JP61315022A patent/JPS63164116A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991002364A1 (en) * | 1989-08-09 | 1991-02-21 | Tokai University | Superconductive wire |
| US5837941A (en) * | 1989-08-09 | 1998-11-17 | Tokai University | Superconductor wire |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Parrell et al. | High field Nb/sub 3/Sn conductor development at oxford superconducting technology | |
| JP3215697B2 (en) | Superconducting coil that limits fault current | |
| US5581220A (en) | Variable profile superconducting magnetic coil | |
| JP2897776B2 (en) | Electrical conductor in wire or cable form | |
| JPH0261764B2 (en) | ||
| US5604473A (en) | Shaped superconducting magnetic coil | |
| Pyon et al. | Nb/sub 3/Sn conductors for high energy physics and fusion applications | |
| Goldfarb et al. | Hysteresis losses in fine filament internal-tin superconductors | |
| JPS63164116A (en) | Nb3sn compound superconductive wire | |
| JPS63164115A (en) | Nb3sn compound superconductive wire | |
| Iwasa | Recent developments in multifilament V 3 Ga & Nb 3 Sn wires in Japan | |
| JPS63216212A (en) | Nb3sn-based superconductive wire and production of it | |
| Kreilick et al. | Further improvements in current density by reduction of filament spacing in multifilamentary Nb Ti superconductors | |
| JPH0377607B2 (en) | ||
| Scanlan et al. | Multifilamentary Nb 3 Sn for superconducting generator applications | |
| Tanaka et al. | Multifilamentary stranded compound superconductor | |
| JP2926774B2 (en) | Nb for AC (3) Sn multi-core superconducting wire | |
| JPH0146963B2 (en) | ||
| Petrovich et al. | Critical current of multifilamentary Nb 3 Sn-insert coil and long sample bend tests | |
| JPH09147635A (en) | Type a15 superconducting wire and its manufacture | |
| JPH09129043A (en) | Nb3 al grouped multicore superconductive wire | |
| Agatsuma et al. | The forced cooled Nb 3 Sn superconductor and its magnet | |
| Nagata et al. | Development of a large high-current-density Nb 3 Sn superconductor made by solid-liquid diffusion method | |
| Suenaga | LOW TC SUPERCONDUCTOR R&D IN JAPAN | |
| JPH07169342A (en) | Multi-filament oxide superconducting wire |