JPH0273930A - Manufacture of sn-ti alloy - Google Patents
Manufacture of sn-ti alloyInfo
- Publication number
- JPH0273930A JPH0273930A JP22441988A JP22441988A JPH0273930A JP H0273930 A JPH0273930 A JP H0273930A JP 22441988 A JP22441988 A JP 22441988A JP 22441988 A JP22441988 A JP 22441988A JP H0273930 A JPH0273930 A JP H0273930A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- melting
- gaseous atmosphere
- casting
- nb3sn
- 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 15
- 229910001069 Ti alloy Inorganic materials 0.000 title claims description 9
- 238000002844 melting Methods 0.000 claims abstract description 17
- 230000008018 melting Effects 0.000 claims abstract description 17
- 238000005266 casting Methods 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000011261 inert gas Substances 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 abstract description 20
- 239000000956 alloy Substances 0.000 abstract description 20
- 229910008839 Sn—Ti Inorganic materials 0.000 abstract description 15
- 229910000657 niobium-tin Inorganic materials 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 9
- 239000002184 metal Substances 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000010935 stainless steel Substances 0.000 abstract description 3
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 3
- 239000000155 melt Substances 0.000 abstract description 2
- 238000005275 alloying Methods 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 239000002131 composite material Substances 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000002893 slag Substances 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】
［産業上の利用分野］
本発明は例えばＮｂ５Ｓｎ超電導線等に好ましく用いる
ことができるＳｎ−Ｔｉ合金の製造方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for producing a Sn--Ti alloy that can be preferably used, for example, in Nb5Sn superconducting wires.
Ｌ従来の技術］
超電線材を用いると電力消費がほとんどなく大電流を流
すことが出来、かつ高磁界まで超電導状態が保たれるこ
とから、高磁界発生用電磁石の巻線材として利用か進め
られている。現在液も広く利用されている線材はＮｂ−
Ｔｉ系の合金線材であるか、このｒ１金線材の発生磁界
は９テスラの限界があり、これ以上の高磁界を必要とす
る場合には、臨界磁界の高いＮ１）ａＳｎ系の化合物線
材が用いられる。このＮｂ３３１線材として、Ｃｕ−３
ｎ合金基体とＮｂ基体の王者より成るものがあり、この
王者にＴｉ添加することにより高磁界での超電導特性の
著しく改善されたＮｂ３Ｓｎ化合物線材の製造方法があ
る。L Conventional technology] Superconducting wires can be used to conduct large currents with almost no power consumption, and the superconducting state is maintained even in high magnetic fields, so their use as winding materials for electromagnets for generating high magnetic fields is progressing. ing. The wire rod that is currently widely used in liquid form is Nb-
The magnetic field generated by Ti-based alloy wire or R1 gold wire has a limit of 9 Tesla, and if a higher magnetic field than this is required, N1) aSn-based compound wire with a high critical magnetic field is used. It will be done. As this Nb331 wire, Cu-3
There is a method for producing an Nb3Sn compound wire material, which is made of a combination of an n-alloy base and a Nb base material, and the superconducting properties in a high magnetic field are significantly improved by adding Ti to this base material.
しかしこの製法では、ＴｉはＮｂ基体あるいはＣｕ−３
ｎ合金基体に添加するため、塑性加工性が劣り断面縮径
加工率約４０％毎に中間焼鈍を必要とし実用線材を製作
するのに焼鈍回数が極めて多くなり製造コスト上問題で
あった。However, in this manufacturing method, Ti is Nb-based or Cu-3
Since it is added to the n-alloy base, the plastic workability is poor and intermediate annealing is required every 40% reduction in cross-sectional diameter, resulting in an extremely large number of annealing operations to produce a practical wire rod, which poses a problem in terms of production costs.
さらに従来の複合加工法に用いるＣｕ−３ｎ合金基体で
は塑性加工性の保持からＳｎの固溶量が限定されそのた
めに拡散生成熱処理で得られるＮｂ３Ｓｎ化合物相が線
材断面積当り少なく、臨界電流の大きな線材製作に難点
があった。他のＮｂ５Ｓｎ超電導線の製造方法として、
純Ｃｕ、 Ｓｎ基体、Ｎｂ基体の三者より成るものがあ
り、これら王者にＴｉ添加する方法かあるが純Ｃｕ及び
Ｎｂ基体にＴｉ添加することはやはり加工性に問題かあ
る。これらを解決するため特開昭６０−８６７０４号公
報に記載されているように、極めて加工性に優れたＳｎ
基体にＴｉ添加しＳｎ−Ｔｉ合金とした加工の容易な方
法で高磁界での超電導特性か改善されたＮｂ３Ｓｎ超電
導線材の製造方法も提案されている。Furthermore, in the Cu-3n alloy substrate used in the conventional composite processing method, the amount of solid solution of Sn is limited in order to maintain plastic workability, and therefore the Nb3Sn compound phase obtained by diffusion generation heat treatment is small per wire cross-sectional area, resulting in a large critical current. There were some difficulties in making the wire. As another method for manufacturing Nb5Sn superconducting wire,
There are three types: pure Cu, Sn base, and Nb base, and there is a method of adding Ti to these bases, but adding Ti to pure Cu and Nb bases still poses problems in processability. In order to solve these problems, as described in Japanese Patent Application Laid-Open No. 60-86704, Sn
A method for producing a Nb3Sn superconducting wire with improved superconducting properties in a high magnetic field has also been proposed by adding Ti to the base material and forming an Sn-Ti alloy by an easy-to-process method.
［発明か解決しようとする課題］
しかしながらＴ１添加Ｓｎ基体を製造するに当ってＳｎ
の融点２３２°ＣとＴｉの融点１６７０″Ｃに大きな差
があり、又Ｔｉにおいては酸化か著しく通常の溶解鋳造
法では未熔融Ｔ１及びＴｉ酸化物の混入による欠陥か発
生する。従って目的とするＴ１濃度とならず不均質なＳ
ｎ−Ｔｉ合金となり実用Ｎｂ５Ｓｎ超電導線材に使用出
来るものか得られなかった。 本発明は上記の問題点を
解決するためになされたものて、Ｎｂ３Ｓｎ Ｍｉ電導
線材に使用することのできる欠陥のない均質なＳｎ４ｉ
合金の製造方法を提供することを目的とする。[Problem to be solved by the invention] However, when manufacturing a T1-added Sn substrate, Sn
There is a large difference between the melting point of 232°C for Ti and the melting point of 1670"C for Ti, and in the case of Ti, there is a significant oxidation or defectiveness due to the contamination of unmelted T1 and Ti oxides in the conventional melting and casting method. Heterogeneous S without T1 concentration
It was not possible to obtain an n-Ti alloy that could be used as a practical Nb5Sn superconducting wire. The present invention has been made in order to solve the above-mentioned problems.
The purpose of the present invention is to provide a method for producing an alloy.
［課題を解決するための手段］
本発明に係るＳｎ−Ｔｉ合金の製造方法は、不活性カス
雰囲気下Ｔ、Ｓｎを６００〜１７５０℃に加熱溶解し、
これに０３〜６５重量％のＴｉを添加し、５００〜１７
５０℃で鋳造するものである。[Means for Solving the Problems] The method for producing a Sn-Ti alloy according to the present invention includes heating and melting T and Sn at 600 to 1750°C in an inert gas atmosphere,
To this, 03 to 65% by weight of Ti was added, and 500 to 17% by weight was added.
It is cast at 50°C.
［作 用］
本発明においては、Ｓｎ−Ｔｉ合金の製造過程で、不活
性ガス雰囲気を用いて鋳造することにより、酸化を抑制
し、欠陥の発生を防ぐ。[Function] In the present invention, oxidation is suppressed and defects are prevented by casting in an inert gas atmosphere during the manufacturing process of the Sn-Ti alloy.
［実施例］
本発明のＮｂ３Ｓｎ超電導線材に使用される重↑％で０
３〜６．５％Ｔｉ添加Ｓｎ合金の典型的な製造方法は次
の通りである。[Example] Weight ↑% used in the Nb3Sn superconducting wire of the present invention is 0
A typical manufacturing method for a 3-6.5% Ti-added Sn alloy is as follows.
即ち、まず純Ｓｎを例えば電気炉あるいは高周波溶解炉
等で溶解温度範囲６０（１〜１７５０℃で溶解し、少な
くとも１分以上加熱保持する。次にあらかじめ目的成分
比で計量準備されたスボンヂＴ１又は水素Ｔ ｉ （Ｔ
ｉ Ｈ２）を添加し、撹拌棒て撹拌しＳｎ−Ｔｉの溶
湯とする。この溶湯を５００°Ｃ以上、好ましくは５５
０°Ｃ以−Ｌで鋳鉄又はステンレス鋳型に鋳造しＳｎ−
Ｔｉ合金鋳塊とする。That is, first, pure Sn is melted at a melting temperature range of 60° C. (1 to 1750° C.) in an electric furnace or a high-frequency melting furnace, and heated and held for at least 1 minute. Next, a sponge T1 or Hydrogen T i (T
i H2) is added and stirred with a stirring bar to form a molten Sn-Ti. This molten metal is heated to 500°C or higher, preferably 55°C.
Cast in cast iron or stainless steel molds at temperatures below 0°C.
A Ti alloy ingot is made.
」王妃工程はすべて例えばＮ、又はＡｒ等の不活性カス
雰囲気中で実施する。不活性雰囲気中で行う理由はＳｎ
の融点２３２°Ｃより高い温度での溶解となるため基材
であるＳｎの酸化を防止する。又Ｔ１は高温で著しく酸
化するため不活性雰囲気中でなければＴｉ酸化物の生成
によりＴｉの摩耗かあり目的成分比が得られないばかり
か酸化物の混入欠陥の原因となる。鋳造においても鋳塊
表面の酸化防止からも不活性ガス雰囲気は必要となる。All queen steps are carried out in an inert gas atmosphere, such as N or Ar. The reason for doing this in an inert atmosphere is that Sn
Since it melts at a temperature higher than the melting point of 232°C, oxidation of the base material Sn is prevented. Furthermore, since T1 is significantly oxidized at high temperatures, if it is not in an inert atmosphere, Ti oxides will be produced and the Ti will be worn out, making it impossible to obtain the desired component ratio and also causing defects due to oxide contamination. In casting, an inert gas atmosphere is necessary to prevent oxidation of the ingot surface.
不活性ガスはＮ、でも可能であるがより不活性なＡｒガ
スか望ましい。Although it is possible to use N as the inert gas, it is preferable to use Ar gas, which is more inert.
−・方溶解温度＠囲については６００℃以下では、スポ
ンチＴｉ又は水素Ｔｉは溶湯Ｓｎに固溶又微細均−分散
されず未溶融状態で偏在し均一な５ｉ−Ｔｉ合金が得ら
れない。−力１７５０°Ｃ以上ては不活性カス雰囲気中
でも１′１の摩耗か激しく、目的成分比を得ることが難
しくなることとガス吸収があり欠陥が発生する。又溶解
炉材等の耐火物の消耗も激しく、工業的生産性に劣るた
めｌ７５０°Ｃ以下とすることか望ましい。また、鋳造
温度５００°Ｃ以下では鋳造時の溶出の流動性か著しく
悪く戸り鋳造作業が困難となるため５０ Ｑ ’Ｃ以上
さらに好ましくは５５０°Ｃ以上とすることが望ましい
。一方上限は−１−記溶融時ヒ同様の理由により溶解温
度１７５０°Ｃ以下か望ましい。- When the melting temperature is below 600° C., the spongy Ti or hydrogen Ti is not solidly dissolved or finely uniformly dispersed in the molten Sn, but is unevenly distributed in an unmolten state, making it impossible to obtain a uniform 5i-Ti alloy. - If the force exceeds 1750°C, even in an inert gas atmosphere, 1'1 wear is severe, it becomes difficult to obtain the desired component ratio, and gas absorption occurs, resulting in defects. In addition, the consumption of refractories such as melting furnace materials is severe and industrial productivity is poor, so it is desirable to keep the temperature below 1750°C. Furthermore, if the casting temperature is below 500°C, the fluidity of the elution during casting will be extremely poor and the door casting operation will be difficult, so it is desirable that the casting temperature be at least 50 Q'C, more preferably at least 550°C. On the other hand, the upper limit is desirably a melting temperature of 1750°C or less for the same reason as in -1- Melting time.
また、Ｔ１のＳｎに対する添加量か０３重量％以１Ｓで
は強磁界ての超電導特性の改善が不十分であり、６．５
重量％以」二では、加工性が悪くなるので、０３〜６５
重量％の範囲内とすることが望ましい以下実施例につい
てさらに具体的に説明〆する。Furthermore, if the amount added to Sn in T1 exceeds 1S by 0.3% by weight, the improvement in superconducting properties in a strong magnetic field is insufficient;
If it exceeds 0.3 to 65% by weight, the processability will deteriorate.
The following examples, in which the weight percentage is preferably within the range, will be described in more detail.
５ｉ−Ｔｉ合金の製造は、不活性ガス雰囲気が保持され
る溶解鋳造が可能な高周波溶解炉にてＡｒガス雰囲気中
で実施した。まず純Ｓｎ２０ ｋｇを１３００℃で溶解
しこの温度で約１時間保持したのぢ粒状のスボンチＴｉ
０．５ｋｇ （２，５重量％Ｔｉ配合）をＳｎの溶湯
中に添加し炭素棒で撹拌後、５分間保持し溶湯表面のス
ラグを除去し溶湯温度１２１０°Ｃで、内用ｉ４ ｈ＜
φ１００Ｘ３３ＣＨ！のステンレス製鋳型内に鋳造した
。この方法で２３重■％Ｔｉの健全なＳｎ−Ｔｉ合金の
鋳塊が得られた。The 5i-Ti alloy was manufactured in an Ar gas atmosphere in a high-frequency melting furnace capable of melting and casting in which an inert gas atmosphere is maintained. First, 20 kg of pure Sn was melted at 1300°C and kept at this temperature for about 1 hour.
Add 0.5 kg (2.5% by weight of Ti) into the Sn molten metal, stir with a carbon rod, hold for 5 minutes to remove slag on the surface of the molten metal, and maintain the molten metal temperature at 1210°C for internal use.
φ100X33CH! Cast in a stainless steel mold. By this method, a healthy Sn--Ti alloy ingot containing 23% Ti was obtained.
次にこのＳｎ−Ｔｉ合金鋳塊をＮｂ３Ｓｎ超電導線材の
複合Ｎ法とするため以下の加工を実施した。鋳塊頭部・
底部の収縮巣の部分を切断除去しかつ生機なし機て外形
φ３０ｍｍまて押出し加工した。これ以後はＮｂ＋Ｓｎ
超電導線材の複合寸法に合わせるため、ドローヘンチ引
抜により要求される種々の径に引抜加工をした。Next, the following processing was performed on this Sn-Ti alloy ingot in order to make it into a composite N method of Nb3Sn superconducting wire. Ingot head/
The shrinkage cavity portion at the bottom was cut off and extruded using a greigeless machine to an outer diameter of 30 mm. From now on, Nb+Sn
In order to match the complex dimensions of the superconducting wire, drawing was performed to various diameters required by draw hench drawing.
第１図にＮｂ３Ｓｎ超電導線に使用されたＳｎ−Ｔｉ合
金棒の複合実施例を示す。図において（１）は上記実施
例によって得られたＳｎ−Ｔｉ合金、（２）はＮｂ線、
（３）は純銅である。このようにして本発明の方法によ
るＳｎ−Ｔｉ合金を用いて得たＮｂ３Ｓｎ超電導線は、
何れもその製造が容易であり、特性的にも高磁界での超
電導特性に著しく優れた実用的なものであった。FIG. 1 shows a composite example of a Sn--Ti alloy rod used in a Nb3Sn superconducting wire. In the figure, (1) is the Sn-Ti alloy obtained in the above example, (2) is the Nb wire,
(3) is pure copper. The Nb3Sn superconducting wire thus obtained using the Sn-Ti alloy according to the method of the present invention is
All of them were easy to manufacture and had extremely excellent superconducting properties in high magnetic fields, making them practical.
なお、上記実施例ではＴｉをＳｎに対し２．３重量％含
むものについて説明したが、Ｔｉの割合か０．３〜６．
Ｓｎ量％の範囲内のものは何れも同様の効果が確認され
た。In addition, in the above-mentioned example, an explanation has been given of a case containing 2.3% by weight of Ti based on Sn, but the proportion of Ti is 0.3 to 6% by weight.
Similar effects were confirmed for all cases where the amount of Sn was within the range of %.
また、Ｓｎ−Ｔｉ合金の形状は板・テープ・線材等であ
っても差し支えるものではない。Further, the shape of the Sn-Ti alloy may be a plate, tape, wire, etc. without any problem.
上記の他、この発明の精神の範囲内で種々の変更や変形
が可能であることはいうまでもない。例えば、Ｓｎに加
えるＴ１はスポンジＴｉ１水素Ｔ１に限定されるもので
はない。It goes without saying that in addition to the above, various changes and modifications can be made within the spirit of the invention. For example, T1 added to Sn is not limited to sponge Ti1 hydrogen T1.
［発明の効果］
以上のようにこの発明によれば、不活性ガス雰囲気下で
Ｓｎを６００〜１７５０’Ｃに加熱溶融し、これに０．
３〜６．５重量％のＴｉを添加し、５００〜１７５０°
Ｃで鋳造することにより、得られるＳｎ−Ｔｉ合金を健
全かつ均質とし、実用的にすぐれたＮｂ３Ｓｎ超電導線
材を与え得るという効果がある。[Effects of the Invention] As described above, according to the present invention, Sn is heated and melted at 600 to 1750'C in an inert gas atmosphere, and then 0.00 to 0.05% is added to the Sn.
Add 3-6.5 wt% Ti, 500-1750°
Casting with C has the effect of making the resulting Sn-Ti alloy sound and homogeneous and providing a practically excellent Nb3Sn superconducting wire.
第１図は本発明の一実施例／によって得られたＳｎ−Ｔ
ｉ合金を用いて製造されたＮｂ３Ｓｎ超電導線複合状況
を示す断面構成図である。
図において、（１）はＳｎ−Ｔｉ合金、（２）はＮｂ。
１ ： Ｓｎ−Ｔｉ合金
Ｎｂ
３：ＣｕFIG. 1 shows Sn-T obtained according to an embodiment of the present invention.
FIG. 2 is a cross-sectional configuration diagram showing a composite state of Nb3Sn superconducting wire manufactured using i alloy. In the figure, (1) is a Sn-Ti alloy, and (2) is Nb. 1: Sn-Ti alloy Nb 3: Cu
Claims (1)
熱溶解し、これに０．３〜６．５重量％のＴｉを添加し
、５００〜１７５０℃で鋳造することを特徴とするＳｎ
−Ｔｉ合金の製造方法。Sn characterized by heating and melting Sn at 600 to 1750°C in an inert gas atmosphere, adding 0.3 to 6.5% by weight of Ti, and casting at 500 to 1750°C.
-Method for producing Ti alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22441988A JPH0676625B2 (en) | 1988-09-09 | 1988-09-09 | Method for producing Sn-Ti alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22441988A JPH0676625B2 (en) | 1988-09-09 | 1988-09-09 | Method for producing Sn-Ti alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0273930A true JPH0273930A (en) | 1990-03-13 |
| JPH0676625B2 JPH0676625B2 (en) | 1994-09-28 |
Family
ID=16813483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22441988A Expired - Lifetime JPH0676625B2 (en) | 1988-09-09 | 1988-09-09 | Method for producing Sn-Ti alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0676625B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0905218A2 (en) * | 1997-09-26 | 1999-03-31 | IRT-Innovative Recycling Technologie GmbH | Process for making a granulate for generate ignition germs in fuel and propellants |
| US6548187B2 (en) | 2001-04-19 | 2003-04-15 | Mitsubishi Denki Kabushiki Kaisha | Sn based alloy containing Sn—Ti compound, and precursor of Nb3SN superconducting wire |
| KR100968483B1 (en) * | 2008-01-11 | 2010-07-07 | 케이. 에이. 티. (주) | Continuous casting method of Sn-based alloy for the precursor of Nb3Sn-based superconducting wire |
-
1988
- 1988-09-09 JP JP22441988A patent/JPH0676625B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0905218A2 (en) * | 1997-09-26 | 1999-03-31 | IRT-Innovative Recycling Technologie GmbH | Process for making a granulate for generate ignition germs in fuel and propellants |
| EP0905218A3 (en) * | 1997-09-26 | 1999-11-03 | IRT-Innovative Recycling Technologie GmbH | Process for making a granulate for generate ignition germs in fuel and propellants |
| US6548187B2 (en) | 2001-04-19 | 2003-04-15 | Mitsubishi Denki Kabushiki Kaisha | Sn based alloy containing Sn—Ti compound, and precursor of Nb3SN superconducting wire |
| KR100968483B1 (en) * | 2008-01-11 | 2010-07-07 | 케이. 에이. 티. (주) | Continuous casting method of Sn-based alloy for the precursor of Nb3Sn-based superconducting wire |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0676625B2 (en) | 1994-09-28 |
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