JPH01240638A - Manufacture of nb3al super conducting member to which teritary element is added - Google Patents
Manufacture of nb3al super conducting member to which teritary element is addedInfo
- Publication number
- JPH01240638A JPH01240638A JP29775988A JP29775988A JPH01240638A JP H01240638 A JPH01240638 A JP H01240638A JP 29775988 A JP29775988 A JP 29775988A JP 29775988 A JP29775988 A JP 29775988A JP H01240638 A JPH01240638 A JP H01240638A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- added
- alloy sheet
- sheet
- manufacturing
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 34
- 239000000956 alloy Substances 0.000 claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 9
- 238000009792 diffusion process Methods 0.000 claims abstract description 9
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 8
- 230000004888 barrier function Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 10
- 230000035515 penetration Effects 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 229910001257 Nb alloy Inorganic materials 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract description 10
- 230000002706 hydrostatic effect Effects 0.000 abstract description 4
- 238000005096 rolling process Methods 0.000 abstract description 4
- 238000005491 wire drawing Methods 0.000 abstract description 3
- 239000003381 stabilizer Substances 0.000 abstract 4
- 229910018459 Al—Ge Inorganic materials 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 229910000676 Si alloy Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005496 eutectics Effects 0.000 description 3
- 238000000886 hydrostatic extrusion Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229910000927 Ge alloy Inorganic materials 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910001020 Au alloy Inorganic materials 0.000 description 1
- 229910020012 Nb—Ti Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003353 gold alloy Substances 0.000 description 1
- 238000005324 grain boundary diffusion Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 235000020046 sherry Nutrition 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明はＮｂ３Ａｌ、超電導部材の製造方法に係り、特
にＧｅやＳｉ等の第三元素の添加により改善された性質
を有する超電導線に好適する部材の製造方法に関する。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a method for manufacturing Nb3Al, a superconducting member, which has improved properties particularly by adding a third element such as Ge or Si. The present invention relates to a method of manufacturing a member suitable for superconducting wire.
（従来の技術）
Ｎｂ、ＳｎやＮｂ３Ａｌ等の化合物系の超電導材料は、
一般にＮｂ−Ｔｉ合金等の合金系超電導材料に比較して
優れた超電導特性を有しており、特にＮｂ３ＡｌはＮｂ
、Ｓｎに比較して上部臨界磁界（Ｈｅ、）が高い上、機
械的性質に優れる等の利点を有するが、Ｎｂ３Ａｌの生
成温度が高く、かつ長時間の熱処理を必要とする難点が
ある。Ｎｂ−Ａｌ系合金の拡散過程に関する研究によれ
ば、Ｎｂ−Ａｌの拡散速度は極めて小さく、例えば８０
０セ前後で数μ箇のＮｂ３ＡｌＮｊＪを生成するために
極めて長時間の拡散時間を要することが知られている。(Prior art) Compound-based superconducting materials such as Nb, Sn, and Nb3Al are
In general, it has superior superconducting properties compared to alloy-based superconducting materials such as Nb-Ti alloys, and in particular, Nb3Al has
, has advantages such as a higher upper critical magnetic field (He, ) and superior mechanical properties than Sn, but has disadvantages such as a high Nb3Al formation temperature and the need for a long heat treatment. According to research on the diffusion process of Nb-Al alloys, the diffusion rate of Nb-Al is extremely low, e.g.
It is known that an extremely long diffusion time is required to generate several μ of Nb3AlNjJ around 0 cells.
しかしながら、ＮｂがＡｌ中に微細に多数存在すれば、
粒界拡散が支配的となり熱処理条件を改善することがで
きるため実用レベルの超電導部材を製造することが可能
となる。However, if a large number of fine Nb exist in Al,
Since grain boundary diffusion becomes dominant and heat treatment conditions can be improved, it becomes possible to manufacture superconducting members at a practical level.
このような観点から、現在Ｎｂ３Ａｌ超電導線の製造方
法としてシェリー・ロール法（ｊｅｌｌｙ−ｒｏｌｌ
ｔｅｃｈｎｉｑｕｅ）と粉末法が知られている。From this point of view, the jelly-roll method is currently being used as a manufacturing method for Nb3Al superconducting wire.
techniques) and powder methods are known.
シェリー・ロール法は、ＮｂシートとＡｌレシート重ね
巻きするものであり、シングル線の加工々程とこれらの
組込み工程が省略される利点番有する。The sherry roll method involves overlapping Nb sheets and Al receipts, and has the advantage of omitting the single wire processing steps and their assembling steps.
一方、粉末法は、金属管内にＮｂとＡｌの混合粉末を充
填し、これらを成型後熱処理を施すものである。On the other hand, in the powder method, a metal tube is filled with a mixed powder of Nb and Al, which is then heat-treated after being molded.
このようなＮｂ３Ａｌの超電導特性（Ｈｅ２および高磁
界における臨界電流密度；Ｊｃ）はＳｉやＧｅ等の第三
元素の添加により向上することが急冷法による試料に関
する実験結果として報告されている（Ａｐｐｌ、Ｐｈｙ
ｓ、Ｌｅｔｔ、 、ｖｏｌ、４７．Ｎｏ、６．１５Ｓｅ
ｐｔｅｍｂｅｒ １９８５）。この粉末法への適用とし
て。It has been reported that the superconducting properties (critical current density in He2 and high magnetic field; Jc) of Nb3Al can be improved by adding a third element such as Si or Ge as an experimental result on a sample using a rapid cooling method (Appl. Phy
s, Lett, , vol, 47. No, 6.15Se
ptember 1985). As an application to this powder method.
例えばＧｅ粉末をＮｂ３Ａｌの粉末と混合して、これを
テープ状に加工した後、電子ビーム照射を含めた２段熱
処理を施す方法が検討されているが、Ｇｅ粉末の加工性
が低いため、その初期粒径によって加工度が限定され実
用的でない。For example, a method is being considered in which Ge powder is mixed with Nb3Al powder, processed into a tape shape, and then subjected to two-step heat treatment including electron beam irradiation, but since Ge powder has low workability, The degree of processing is limited by the initial particle size, making it impractical.
（発明が解決しようとする課題）
本発明は上記の難点、即ち第三元素の添加されたＮｂ３
Ａｌ超電導部材の加工性を改善し。(Problems to be Solved by the Invention) The present invention solves the above-mentioned difficulties, namely, Nb3 to which a third element is added.
Improved workability of Al superconducting members.
Ｈｅ２や高磁界でのＪｃ等の超電導特性に優れた超電導
部材の製造方法を提供することをその目的とする。The object of the present invention is to provide a method for manufacturing a superconducting member having excellent superconducting properties such as He2 and Jc in a high magnetic field.
［発明の構成］
（課題を解決するための手段）
本願第１の発明の第三元素添加Ｎｂ３Ａｌ超電導部材の
製造方法は、補強部材の外側に、多数の貫通部を有する
ＮｂまたはＮｂ基合金シートと、Ａ４合金シートを積層
しながら巻回し、この巻回層の外側に拡散障壁および安
定化材を順次配置した後減面加工を施し、次いでＮｂ３
Ａｌ生成の熱処理を施すことを特徴としている。[Structure of the Invention] (Means for Solving the Problems) A method for manufacturing a third element-added Nb3Al superconducting member according to the first invention of the present application includes an Nb or Nb-based alloy sheet having a large number of penetration parts on the outside of a reinforcing member. Then, A4 alloy sheets were layered and wound, and after sequentially arranging a diffusion barrier and a stabilizing material on the outside of this wound layer, surface reduction processing was performed, and then Nb3
It is characterized by applying heat treatment to generate Al.
さらに本願第２の発明の第三元素添加Ｎｂ３Ａｌ超電導
部材の製造方法は、補強部材の外側に、多数の貫通部を
有するＮｂまたはＮｂ基合金シートと、Ａ０合金シート
を積層しながら巻回し、この巻回層の外側に金属管を配
置した後減面加工を施し、次いでＮｂ３Ａｌ生成の熱処
理を施すことを特徴としている。Furthermore, the method for manufacturing a third element-added Nb3Al superconducting member according to the second invention of the present application includes laminating and winding a Nb or Nb-based alloy sheet having a large number of penetration parts and an A0 alloy sheet on the outside of a reinforcing member. The method is characterized in that a metal tube is placed outside the wound layer and then subjected to surface reduction processing, and then subjected to heat treatment to generate Nb3Al.
本願発明における補強部材としては、強度が大きく、か
つ構成部材として適度の加工性を有するものであれば使
用し得るが、このようなものとしてＮｂまたはＮｂ基合
金を上げることができる。As the reinforcing member in the present invention, any material can be used as long as it has high strength and suitable workability as a constituent member, and Nb or a Nb-based alloy can be used as such material.
また本願発明における第三元素は、予め、１に添加し、
これをシート状に加工したＡＩ２合金シートとして用い
られるが、同時に第三元素を添加したＮｂ基合金シート
を用いることもできる。Further, the third element in the present invention is added to 1 in advance,
This is used as an AI2 alloy sheet processed into a sheet shape, but at the same time, a Nb-based alloy sheet to which a third element is added can also be used.
上記の第三元素としてはＧｅ、Ｓｉが適する。Ge and Si are suitable as the third element.
これらの添加元素はそれぞれ単独に添加される場合には
、
Ｇｅ＝ （０，５〜３５）ａｔ％
Ｓｉ＝ （０，１〜１５）ａｔ％
の範囲であることが好ましく、さらに同時にＡｌ合金シ
ートあるいはＮｂ基合金シートに添加して用いることも
できる。この場合の添加量は、
（Ｇｅ＋Ｓｉ）＝ （０，１〜３５）ａｔ％の範囲が好
適する。この添加量の範囲は超電導特性と加工性の２点
から選定されるものである。When these additive elements are added individually, it is preferable that the ranges are Ge = (0,5 to 35) at% Si = (0,1 to 15) at%, and at the same time, the Al alloy sheet Alternatively, it can be used by adding it to a Nb-based alloy sheet. In this case, the addition amount is preferably in the range of (Ge+Si)=(0,1 to 35) at%. The range of this addition amount is selected from two points: superconducting properties and workability.
即ち、添加量が少ないとＨｅ、およびＪｃ内向上効果が
小さく、添加量が多くなると加工性が低下する。That is, when the amount added is small, the effect of improving He and Jc is small, and when the amount added is large, the workability is reduced.
Ｇｅおよび／またはＳｉの量が、上記範囲内の高濃度、
即ち共晶点近傍の場合には１例えばＡｌ金合金対して１
０’℃／ｍｉｎ以上の冷却速度で凝固させ、共晶組織を
微細にして加工性を改善させる方法を用いる。A high concentration in which the amount of Ge and/or Si is within the above range,
That is, in the vicinity of the eutectic point, 1 for example, 1 for Al-gold alloy.
A method is used in which the material is solidified at a cooling rate of 0'° C./min or more to refine the eutectic structure and improve workability.
上記以外の組成の場合には、基本的には加工性を低下さ
せない程度の固溶体を主として若干の共晶組織を含む組
成が適する。In the case of a composition other than the above, a composition containing mainly a solid solution and some eutectic structure is basically suitable to the extent that it does not reduce workability.
この場合のＧｅ、Ｓｉの量は、それぞれ単独に添加され
る場合には、
Ｇｅ＝ （１〜９）ａｔ％
Ｓｉ＝（０，１〜３）ａｔ％
の範囲であることが好ましく、さらに同時にＡｆ１合金
シートあるいはＮｂ基合金シートに添加される場合には
（Ｇｅ＋Ｓｉ）＝ （０，１〜９）ａｔ％の範囲が好ま
しい。In this case, the amounts of Ge and Si are preferably in the range of Ge = (1 to 9) at% Si = (0,1 to 3) at% when each is added individually, and furthermore, at the same time When added to an Af1 alloy sheet or a Nb-based alloy sheet, the range of (Ge+Si)=(0,1-9)at% is preferable.
本願発明におけるＮｂまたはＮｂ基合金シートの厚さは
３Ａｌ合金シートの厚さの０．５〜１０倍の範囲である
ことが好ましい。この理由は上記の厚さの比が０．５未
満であると超電導性を示さないＡｌに富むＮｂ−／ｌ化
合物、例えばＮｂＡｌｌ、ＮｂＡｌ、Ｎｂ２Ａｌ等が多
く生成し、Ｎｂ。The thickness of the Nb or Nb-based alloy sheet in the present invention is preferably in the range of 0.5 to 10 times the thickness of the 3Al alloy sheet. The reason for this is that if the above-mentioned thickness ratio is less than 0.5, a large amount of Al-rich Nb-/l compounds that do not exhibit superconductivity, such as NbAll, NbAl, Nb2Al, etc., are generated, and Nb.
Ａｌの生成量が低下するためであり、またこの比が１０
を越えるとＡ１５型のＮｂ３Ａｌ化合物中のＡｌ量が不
足するとともにその生成量が低下して、いずれの場合に
も超電導特性の向上が認められないことによる６
上記のＮｂまたはＮｂ基合金シートには多数の貫通部が
形成されており、これによりＮｂフィラメントの微細化
と同様の効果を得ることができる。このようなシートは
、シートに多数の細孔を打抜加工により形成するか、あ
るいは同一直線上に位置する多数の短いスリットをその
横方向の位置を相互にずらせて平行に多数形成したシー
トを横方向に伸張させることにより得られる。This is because the amount of Al produced decreases, and when this ratio is 10
If the above Nb or Nb-based alloy sheet A large number of penetrating portions are formed, and thereby an effect similar to that of miniaturization of Nb filaments can be obtained. Such sheets are made by forming a large number of pores in the sheet by punching, or by forming a large number of short slits located on the same straight line in parallel with each other with their lateral positions shifted. Obtained by stretching in the lateral direction.
さらに本願第１の発明における拡散障壁としてはＮｂ、
Ｔａあるいはこれらの合金が適しており１通常管体とし
て用いられる。Furthermore, as a diffusion barrier in the first invention of the present application, Nb,
Ta or an alloy thereof is suitable and is usually used as the tube.
同様に、安定化材としてはＣｕまたはＣｕ合金を採用す
ることが好ましい。Similarly, it is preferable to use Cu or a Cu alloy as the stabilizing material.
（実施例）
実施例１
厚さ０ 、５ｍｍ、 ＠３００ＩＩ＋ｍ、長さ１２６０
關のＡｌ−４，８ａｔ％Ｇｅ合金シートと厚さＱ、３＋
ｎｍで上記と同一の幅および長さを有するＮｂメツシュ
シートとを外径１４ｍｍφのＮｂロッドの外周に重ね巻
きし、これを内径４２ａ＋ｗ＋φ、外径４５ｍｍφのＮ
ｂ管内に収容した後、その外側に厚さ４．５ｍｍのＣｕ
管を配置した。(Example) Example 1 Thickness 0, 5mm, @300II+m, length 1260
Related Al-4,8at%Ge alloy sheet and thickness Q, 3+
A Nb mesh sheet having the same width and length as above in nm is wrapped around the outer circumference of an Nb rod with an outer diameter of 14 mmφ, and this is wrapped around an Nb rod with an inner diameter of 42a + w + φ and an outer diameter of 45 mmφ.
b After being accommodated in the tube, a 4.5 mm thick Cu layer is placed on the outside of the tube.
The tube was placed.
このようにして得られた長さ３００關、外径５５ｍｍφ
の複合体の両端を密封した後、静水圧加圧および静水圧
押出加工を施して外径１５ｍｍφの複合線を製作した。The length obtained in this way is 300 mm, and the outer diameter is 55 mmφ.
After sealing both ends of the composite, it was subjected to hydrostatic pressing and hydrostatic extrusion to produce a composite wire with an outer diameter of 15 mmφ.
この複合線に縮径加工を施して外径１．４０＋ｗφの線
材とし、さらに圧延加工を施した後硝酸中に浸漬して最
外ｍのＣｕを除去し厚さ０．２順のテープを製造した。This composite wire is subjected to diameter reduction processing to obtain a wire rod with an outer diameter of 1.40 + wφ, and after further rolling processing, it is immersed in nitric acid to remove the outermost m of Cu to produce tapes with a thickness of 0.2. did.
このテープに１２００℃で１分間の均質化処理を施した
後、７５０℃で４０間の熱処理を施して超電導テープを
製造した。This tape was subjected to homogenization treatment at 1200° C. for 1 minute and then heat treated at 750° C. for 40 minutes to produce a superconducting tape.
このようにして得られたテープの臨界電流密度（Ｊｃ）
は１３Ｔで３４０Ａ／ｎ＋ｎ＋２．１８Ｔで２７２Ａ／
關２であった。これに対しＡｌ−Ｇｅ合金シートの代り
にＡｌレシート用いて同様の方法によりｖ５造したテー
プのＪｃは１３Ｔで５４０Ａ／ｎ＋ｎ＋”、１８ＴでＩ
ＬＯＡ／１１１１１１”であった。Critical current density (Jc) of the tape thus obtained
is 13T and 340A/n+n+2.18T and 272A/
It was the second time. On the other hand, the Jc of the v5 tape made by the same method using Al receipt instead of the Al-Ge alloy sheet was 540A/n+n+'' at 13T, and I at 18T.
LOA/111111”.
実施例２
実施例１で得た外径１５ｍｍφの複合線に伸線加工を施
して平行面間距１２．１＋ａｍの断面六角形の線材を製
造した。この線材の３０１本を厚さ４．５朋、内径４０
ルφのＣｕ管中に稠密に充填してその両端を密封した後
、静水圧押出加工を施し、次いでスウェージング加工お
よび伸線加工を施して外径１．０關φの線材を製造した
。Example 2 The composite wire with an outer diameter of 15 mmφ obtained in Example 1 was subjected to wire drawing to produce a wire rod having a hexagonal cross section with a distance between parallel planes of 12.1+am. 301 of these wires have a thickness of 4.5 mm and an inner diameter of 40 mm.
After densely filling a Cu tube with a diameter of 1.0 mm and sealing both ends, hydrostatic extrusion was performed, followed by swaging and wire drawing to produce a wire rod with an outer diameter of 1.0 mm.
この線材に９５０℃で１分間および７５０℃で４日間の
二段熱処理を施して超電導線を製造した。This wire was subjected to two-step heat treatment at 950° C. for 1 minute and at 750° C. for 4 days to produce a superconducting wire.
このようにして得られた線材のＪｃは１３Ｔで１２５Ａ
／ａｍ”、 １８ Ｔで１００Ａ／ｍｍ２であった。The Jc of the wire obtained in this way is 13T and 125A.
/am”, 100 A/mm2 at 18 T.
これに対しＡｌ−Ｇｅシートの代りにＡｌレシート用い
て同様の方法により製造した線材のＪｃは１３Ｔで１８
０Ａ／ｍｌ１１２．１８Ｔで３６Ａ／ｍｍ２であった。On the other hand, the Jc of the wire manufactured by the same method using Al receipt instead of Al-Ge sheet is 13T and 18
It was 36A/mm2 at 0A/ml112.18T.
実施例３
実施例１のＡｌ−Ｇｅ合金シートの代りに、Ａｌ−０，
２６ａｔ％Ｓｉ合金シートを用いた他は同様の方法によ
り超電導テープを製造した。このテープのＪｃは１３Ｔ
で２６０Ａ／ｎｕｓ”、１８Ｔで２０８Ａ／ｍｍ”であ
った。Example 3 Instead of the Al-Ge alloy sheet of Example 1, Al-0,
A superconducting tape was manufactured in the same manner except that a 26 at % Si alloy sheet was used. Jc of this tape is 13T
It was 260A/nus" at 18T, and 208A/mm" at 18T.
実施例４ 実施例１のＡｌ−Ｇｅ合金シートの代りに。Example 4 Instead of the Al-Ge alloy sheet of Example 1.
Ａ Ｑ−０，２６ａｔ％Ｓｉ合金シートを用いて、実施
例２と同様の方法で超電導線を製造した。この線材のＪ
ｃは１３Ｔで８０ Ａ ／ Ｒ１１１”、１８Ｔで６４
Ａ／ｍｍ”であった。A superconducting wire was manufactured in the same manner as in Example 2 using a Q-0,26 at% Si alloy sheet. J of this wire
c is 80 A/R111” for 13T, 64 for 18T
A/mm".
実施例５
急冷法により製造した厚さ０．１ ｍ（＠１５０ｍｏ＋
。Example 5 Thickness 0.1 m (@150mo+
.
長さ２０３０ｍｍのＡ Ｑ−２５，３ａｔ％Ｇｅ合金シ
ートと厚さ０．３ｎｎで上記と同一の輻および長さを有
するＮｂメツシュシートとを外径１０關φのＮｂロッド
の外周に重ね巻きし、これを内径４０ｍｍφ、外径４５
ＩＩＩＩＩＩφのＮｂ管内に収容した後、その外周に厚
さ４ 、５ ｍｍのＣｕ管を配置した。A Q-25,3 at% Ge alloy sheet with a length of 2030 mm and an Nb mesh sheet with a thickness of 0.3 nn and the same diameter and length as above were wrapped around the outer periphery of an Nb rod with an outer diameter of 10 mm, This has an inner diameter of 40mmφ and an outer diameter of 45mm.
After it was housed in a Nb tube of IIIIIIφ, a Cu tube with a thickness of 4 to 5 mm was placed around its outer periphery.
このようにして得られた長さ１５０ｍｍ、外径５５ｍｍ
φの複合体の両端を密封した後、静水圧加圧および静水
圧押出加工を２回施して外径１５關φの複合線を製造し
た。The length obtained in this way is 150 mm, and the outer diameter is 55 mm.
After sealing both ends of the φ composite, hydrostatic pressing and hydrostatic extrusion were applied twice to produce a composite wire with an outer diameter of 15 mm.
この複合線に縮径加工を施して外径１．２０關φの線材
とし１次いで硝酸中に浸漬して最外層のＣｕを除去し外
径１．０關φの線材を製造した。この線材に１２５０℃
で５分間の均質化処理を施した後、７００℃で４日間の
熱処理を施して超電導線を製造した。This composite wire was subjected to diameter reduction processing to obtain a wire rod with an outer diameter of 1.20 mm.Then, it was immersed in nitric acid to remove the outermost layer of Cu to produce a wire rod with an outer diameter of 1.0 mm. 1250℃ for this wire
After performing homogenization treatment for 5 minutes at , heat treatment was performed at 700° C. for 4 days to produce a superconducting wire.
このようにして得られた線材の臨界電流密度（Ｊｃ）は
１３Ｔで４４２ Ａ／ｍｍ”、 １８ Ｔで２８０Ａ／
ｍｍ２であった。The critical current density (Jc) of the wire thus obtained was 442 A/mm" at 13 T and 280 A/mm at 18 T.
It was mm2.
実施例６
実施例５のＡｌ−Ｇｅ合金シートの代りに、Ａｌ１．３
ａｔ％Ｓｉ合金シートを用いた他は同様の方法により超
電導線材を製造した。この線材のＪｃは１３Ｔで４００
Ａ ／ ａｒｍ”、１８Ｔで２５０Ａ／ ｍｍ”であっ
た。Example 6 Instead of the Al-Ge alloy sheet of Example 5, Al1.3
A superconducting wire was manufactured in the same manner except that an at% Si alloy sheet was used. The Jc of this wire is 13T and 400
A/arm", 250A/mm" at 18T.
実施例７
実施例５のＡｌ−Ｇｅ合金シートの代りに、Ａ１１４．
３ａｔ％Ｇｅ−４，８ａｔ％Ｓｉ合金シートを用い、熱
処理を２段階で施した他は同様の方法により超電導線を
製造した。１段目の熱処理は電子ビーム照射（６０Ｗ／
ｍｓ”）で施し、２段目の熱処理は７００℃で１００時
間施した。この線材のＪｃは１３Ｔで５００Ａ／ｍｌｌ
”、１８Ｔで４５０Ａ／龍２であった。Example 7 Instead of the Al-Ge alloy sheet of Example 5, A114.
A superconducting wire was manufactured in the same manner except that a 3 at% Ge-4,8 at% Si alloy sheet was heat treated in two stages. The first heat treatment is electron beam irradiation (60W/
The second heat treatment was performed at 700℃ for 100 hours.The Jc of this wire was 13T and 500A/ml.
”, it was 450A/Ryu 2 at 18T.
［発明の効果］
以上述べたように本発明によれば、多数の貫通部を有す
るＮｂまたはＮｂ基合金シートと。[Effects of the Invention] As described above, according to the present invention, an Nb or Nb-based alloy sheet having a large number of penetration parts.
ＡΩ合金シートを用いることにより、極細多心構造を容
易に達成することができ、かつ超′ＦＬ導特性および加
工性改善のための第三元素の添加されたＮｂ３Ａｌ超電
導部材を容易に製造することができる。この超電導部材
は上部臨界磁界（ＨＯ２）や高磁界における臨界電流密
度（Ｊｃ）等の超電導特性に優れ、超電導マグネット形
成用の実用線材として好適する。By using an AΩ alloy sheet, an ultra-fine multicore structure can be easily achieved, and an Nb3Al superconducting member to which a third element is added to improve super-FL conductivity and workability can be easily manufactured. Can be done. This superconducting member has excellent superconducting properties such as upper critical magnetic field (HO2) and critical current density (Jc) in a high magnetic field, and is suitable as a practical wire material for forming superconducting magnets.
代理人 弁理士 守 谷 −雄Agent Patent Attorney Moriya - Yu
Claims (9)
たはＮｂ基合金シートと、Ａｌ合金シートを積層しなが
ら巻回し、この巻回層の外側に拡散障壁および安定化材
を順次配置した後減面加工を施し、次いでＮｂ＿３Ａｌ
生成の熱処理を施すことを特徴とする第三元素添加Ｎｂ
＿３Ａｌ超電導部材の製造方法。(1) A Nb or Nb-based alloy sheet having a large number of penetration parts and an Al alloy sheet were laminated and wound on the outside of the reinforcing member, and a diffusion barrier and a stabilizing material were sequentially arranged on the outside of this wound layer. After surface reduction processing, Nb_3Al
Third element-added Nb characterized by being subjected to heat treatment for formation
_3 Method of manufacturing Al superconducting member.
たはＮｂ基合金シートと、Ａｌ合金シートを積層しなが
ら巻回し、この巻回層の外側に金属管を配置した後減面
加工を施し、次いで、Ｎｂ＿３Ａｌ生成の熱処理を施す
ことを特徴とする第三元素添加Ｎｂ＿３Ａｌ超電導部材
の製造方法。(2) A Nb or Nb-based alloy sheet having a large number of penetration parts and an Al alloy sheet are laminated and wound around the outside of the reinforcing member, and a metal tube is placed outside of this wound layer, followed by surface reduction processing. A method for manufacturing a third element-added Nb_3Al superconducting member, characterized in that a heat treatment is performed to generate Nb_3Al.
の範囲第１項あるいは第２項記載の第三元素添加Ｎｂ＿
３Ａｌ超電導部材の製造方法。(3) The reinforcing member is made of Nb or a Nb alloy, and the third element added Nb according to claim 1 or 2 is
3Al superconducting member manufacturing method.
はＧｅおよび／またはＳｉが添加されてなる特許請求の
範囲第１項あるいは第２項記載の第三元素添加Ｎｂ＿３
Ａｌ超電導部材の製造方法。(4) The Nb-based alloy sheet and/or the Al alloy sheet is formed by adding Ge and/or Si to the third element added Nb_3 according to claim 1 or 2.
A method for manufacturing an Al superconducting member.
Ｎｂ＿３Ａｌ超電導部材の製造方法。(5) The amount of Ge and/or Si added is in the following ranges: Ge=0.5 to 35 at% Si=0.1 to 15 at% (Ge+Si)=0.1 to 35 at% A method for manufacturing a third element-added Nb_3Al superconducting member.
Ｎｂ＿３Ａｌ超電導部材の製造方法。(6) A patent in which the amount of Ge and/or Si added is in the range of Ge=(1-9) at% Si=(0.1-3) at% (Ge+Si)=(0.1-9) at% A method for manufacturing a third element-added Nb_3Al superconducting member according to claim 4.
シートの０．５〜１０倍である特許請求の範囲第１項乃
至第６項いずれか１項記載の第三元素添加Ｎｂ＿３Ａｌ
超電導部材の製造方法。(7) The thickness of the Nb or Nb-based alloy sheet is 0.5 to 10 times that of the Al alloy sheet.
A method for manufacturing a superconducting member.
なる特許請求の範囲第１項、第３項乃至第７項いずれか
１項記載の第三元素添加Ｎｂ＿３Ａｌ超電導部材の製造
方法。(8) A method for manufacturing a third element-added Nb_3Al superconducting member according to any one of claims 1, 3 to 7, in which the diffusion barrier is made of Nb, Ta, or an alloy thereof.
の範囲第１項、第３項乃至第８項いずれか１項記載の第
三元素添加Ｎｂ＿３Ａｌ超電導部材の製造方法。(9) A method for manufacturing a third element-added Nb_3Al superconducting member according to any one of claims 1, 3 to 8, in which the stabilizing material is made of Cu or a Cu alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63297759A JP2815373B2 (en) | 1987-12-28 | 1988-11-25 | Method for producing third element-added Nb (3) A (1) superconducting member |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33299087 | 1987-12-28 | ||
| JP62-332990 | 1987-12-28 | ||
| JP63297759A JP2815373B2 (en) | 1987-12-28 | 1988-11-25 | Method for producing third element-added Nb (3) A (1) superconducting member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01240638A true JPH01240638A (en) | 1989-09-26 |
| JP2815373B2 JP2815373B2 (en) | 1998-10-27 |
Family
ID=26561222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63297759A Expired - Lifetime JP2815373B2 (en) | 1987-12-28 | 1988-11-25 | Method for producing third element-added Nb (3) A (1) superconducting member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2815373B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01140521A (en) * | 1987-08-25 | 1989-06-01 | Natl Res Inst For Metals | Manufacture of nb3al compound superconductive wire rod |
-
1988
- 1988-11-25 JP JP63297759A patent/JP2815373B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01140521A (en) * | 1987-08-25 | 1989-06-01 | Natl Res Inst For Metals | Manufacture of nb3al compound superconductive wire rod |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2815373B2 (en) | 1998-10-27 |
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