JPH0525565A - High purity cu alloy for stabilizing material for superconducting use having high residual resistance value - Google Patents
High purity cu alloy for stabilizing material for superconducting use having high residual resistance valueInfo
- Publication number
- JPH0525565A JPH0525565A JP3206548A JP20654891A JPH0525565A JP H0525565 A JPH0525565 A JP H0525565A JP 3206548 A JP3206548 A JP 3206548A JP 20654891 A JP20654891 A JP 20654891A JP H0525565 A JPH0525565 A JP H0525565A
- Authority
- JP
- Japan
- Prior art keywords
- purity
- alloy
- residual resistance
- resistance value
- oxygen content
- 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
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- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は、高い残留抵抗比を有
し、特にこの特性が要求される超電導線の安定化材とし
て用いた場合にすぐれた性能を発揮する高純度Cu合金
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-purity Cu alloy having a high residual resistance ratio and exhibiting excellent performance particularly when it is used as a stabilizer for superconducting wires which require this characteristic. is there.
【0002】従来、例えば粒子加速器やリニアモーター
力、さらに電力貯蔵装置などの分野で、Nb−Ti合金
などからなる多数本のフィラメント状芯線を高純度銅か
らなる安定化材を介在させて束ねてなる多芯構造の超電
導線が用いられている。In the past, for example, in the fields of particle accelerators, linear motor power, and electric power storage devices, a large number of filament core wires made of Nb-Ti alloy or the like are bundled with a stabilizing material made of high-purity copper interposed therebetween. The multi-conductor superconducting wire is used.
【0003】上記超電導線の安定化材は、線の一部で何
らかの外的要因などにより超電導状態が破れた場合、そ
の部分が常電導に転移し、これに伴ないジュール熱が発
生するようになるが、この熱を吸収すると共に、周囲の
液体ヘリウムによって冷却して再び超電導状態に復帰さ
せる作用をもつほか、発熱部の芯線に流れるはずの電流
のバイパス機能をもつものである。In the above-mentioned stabilizer for superconducting wire, when the superconducting state is broken in some part of the wire due to some external factor, the part is transformed into normal conducting, and accordingly Joule heat is generated. However, in addition to absorbing this heat, it also has the function of returning to the superconducting state by cooling it with the surrounding liquid helium, and also has the bypass function of the current that should flow to the core wire of the heat generating part.
【0004】また、上記安定化材が、常温の電気比抵抗
をρ273k、液体ヘリウム温度での電気比抵抗をρ4.2kと
した場合、これら両者の比であるρ273k/ρ4.2k(この
比を残留抵抗比という)によって評価され、この残留抵
抗比が高いほど安定化材としてすぐれた性能を発揮する
ことも知られている。When the above-mentioned stabilizer has an electrical resistivity at room temperature of ρ 273k and an electrical resistivity at liquid helium temperature of ρ 4.2k , the ratio of these is ρ 273k / ρ 4.2k (this It is also known that the higher the residual resistance ratio, the better the performance as a stabilizer.
【0005】さらに、上記超電導線の安定化材として、
例えば特開平2−122037号公報に記載される通
り、酸素含有量が1〜50ppm以下にして、99.9
95%以上の純度を有する高純度銅が用いられているこ
とも知られている。Further, as a stabilizing material for the superconducting wire,
For example, as described in Japanese Patent Application Laid-Open No. 2-122037, the oxygen content is set to 1 to 50 ppm or less and 99.9.
It is also known that high-purity copper having a purity of 95% or more is used.
【0006】[0006]
【発明が解決しようとする課題】一方、近年の上記各種
機械装置の高性能化、高出力化、および高容量化はめざ
ましく、これに伴ない超電導線にも高い性能が要求さ
れ、したがってこれを構成する安定化材にも高い残留抵
抗比が求められているのが現状である。On the other hand, in recent years, the high performance, high output, and high capacity of the above various mechanical devices are remarkable, and accordingly, the superconducting wire is also required to have high performance. At the present time, a high residual resistance ratio is also required for the stabilizing material to be formed.
【0007】[0007]
【課題を解決するための手段】そこで、本発明者は、上
述のような観点から、高い残留抵抗比を有する材料を開
発すべく研究を行なった結果、酸素含有量が1ppm以
下にして、99.998%以上の純度を有する高純度銅
に、合金成分として1〜15ppmのZrを含有させて
なる高純度Cu合金は、合金成分としてのZrの含有に
よって、これを含有しない高純度銅に比して一段と高い
残留抵抗比をもつようになり、超電導線の安定化材とし
て用いた場合にすぐれた性能を発揮するという研究結果
を得たのである。The inventors of the present invention have conducted research to develop a material having a high residual resistance ratio from the above viewpoints. As a result, the oxygen content has been reduced to 1 ppm or less, A high-purity Cu alloy in which 1 to 15 ppm of Zr is contained as an alloy component in high-purity copper having a purity of .998% or more is higher than a high-purity copper that does not contain Zr due to the inclusion of Zr as an alloy component As a result, we obtained a research result that it has a much higher residual resistance ratio and exhibits excellent performance when used as a stabilizer for superconducting wires.
【0008】この発明は、上記の研究結果にもとづいて
なされたものであって、酸素含有量が1ppm以下にし
て、99.998%以上の純度を有する高純度銅に、合
金成分として1〜15ppmのZrを含有させてなる、
高い残留抵抗比を有する超電導線安定化材用高純度Cu
合金に特徴を有するものである。The present invention has been made based on the above-mentioned research results, and is 1 to 15 ppm as an alloy component in high-purity copper having an oxygen content of 1 ppm or less and a purity of 99.998% or more. Containing Zr,
High-purity Cu for superconducting wire stabilizer having high residual resistance ratio
It is characterized by alloys.
【0009】なお、この発明の高純度Cu合金におい
て、酸素およびZrの含有量、並びにZr成分を除いた
純度を上記の通りに限定したのは、酸素含有量が1pp
mを越えても、また純度が99.998%未満になって
も、さらにZr含有量が1ppm未満であったり、15
ppmを越えたりすると、所望の高い残留抵抗比が得ら
れないという理由によるものである。In the high-purity Cu alloy of the present invention, the oxygen and Zr contents and the purity excluding the Zr component are limited as described above because the oxygen content is 1 pp.
Even if it exceeds m or the purity is less than 99.998%, the Zr content is less than 1 ppm, or 15
This is because when the content exceeds ppm, the desired high residual resistance ratio cannot be obtained.
【0010】つぎに、この発明の高純度Cu合金を実施
例により具体的に説明する。電気炉を用い、N2 +CO
の還元性ガス雰囲気中で高純度銅を溶解し、この高純度
銅の酸素含有量および純度を前記雰囲気で調製した状態
で、合金成分として所定量のZrを添加含有させ、つい
で直径:70mm×長さ:150mmのインゴットに鋳
造し、これより断面寸法:25mm×25mmの角材を
切出し、これに850℃で熱間圧延を施して直径:8m
mの熱延線材とし、この熱延線材から冷間圧延により直
径:0.5mmの細線を成形し、これに500℃に1時
間保持の歪取り焼鈍を施すことにより、それぞれ表1に
示される純度、酸素およびZr含有量の本発明高純度C
u合金線材1〜7、および比較線材1〜5をそれぞれ製
造した。Next, the high-purity Cu alloy of the present invention will be specifically described with reference to examples. Using an electric furnace, N 2 + CO
In the reducing gas atmosphere, high-purity copper is dissolved, and in a state where the oxygen content and the purity of the high-purity copper are adjusted in the atmosphere, a predetermined amount of Zr is added and contained as an alloy component, and then diameter: 70 mm × Length: cast into an ingot with a diameter of 150 mm, cut out a rectangular piece with a cross-sectional dimension of 25 mm x 25 mm, and hot-roll it at 850 ° C to obtain a diameter of 8 m.
A hot-rolled wire having a diameter of 0.5 mm is formed by cold rolling from this hot-rolled wire, and subjected to strain relief annealing at 500 ° C. for 1 hour. High purity C of the present invention with purity, oxygen and Zr content
u alloy wire rods 1 to 7 and comparative wire rods 1 to 5 were manufactured.
【0011】[0011]
【表1】 [Table 1]
【0012】なお、比較線材1〜5は、純度、酸素含有
量、およびZr含有量のうちの少なくともいずれかがこ
の発明の範囲から外れたものである。また、表1の純度
の欄における括弧内の数字はZrを除いた場合の純度を
示す。The comparative wires 1 to 5 have at least one of purity, oxygen content and Zr content outside the scope of the present invention. In addition, the numbers in parentheses in the Purity column of Table 1 indicate the purity when Zr is excluded.
【0013】つぎに、この結果得られた本発明高純度C
u合金線材1〜7および比較線材1〜5について、四端
子法にて、常温電気比抵抗(ρ273k)および液体ヘリウ
ム温度での電気比抵抗(ρ4.2k)を測定し、残留抵抗比
を算出した。この測定結果を表1に示した。Next, the high purity C of the present invention obtained as a result of the above
Regarding the u alloy wire rods 1 to 7 and the comparative wire rods 1 to 5, the room temperature electric resistivity (ρ 273k ) and the electric resistivity at liquid helium temperature (ρ 4.2k ) were measured by the four-terminal method, and the residual resistance ratio was calculated. Calculated. The measurement results are shown in Table 1.
【0014】[0014]
【発明の効果】表1に示される結果から、本発明高純度
Cu合金線材1〜7は、いずれも上記の従来高純度銅に
相当する組成を有する比較線材1に比して一段と高い残
留抵抗比を有することが明らかであり、一方比較線材2
〜5に見られるように、純度、酸素含有量、およびZr
含有量のうちのいずれかでもこの発明の範囲から外れる
と、特にρ4.2kが高くなり、所望の高い残留抵抗比を示
さなくなることが明らかである。From the results shown in Table 1, the high-purity Cu alloy wire rods 1 to 7 of the present invention have much higher residual resistance than the comparative wire rod 1 having the composition corresponding to the above-mentioned conventional high-purity copper. It is clear that it has a ratio, while the comparison wire 2
~ 5, purity, oxygen content, and Zr
It is clear that if any of the contents is out of the range of the present invention, ρ 4.2k becomes particularly high and the desired high residual resistance ratio is not exhibited.
【0015】上述のように、この発明の高純度Cu合金
は、合金成分として含有させたZrによって高い残留抵
抗比を具備するようになるので、これを超電導線の安定
化材として用いた場合、超電導線の性能向上に一段と寄
与するようになるなど工業上有用な特性を有するのであ
る。As described above, the high-purity Cu alloy of the present invention has a high residual resistance ratio due to Zr contained as an alloy component. Therefore, when it is used as a stabilizer for superconducting wires, It has industrially useful characteristics such as contributing to further improvement of the performance of the superconducting wire.
Claims (1)
9.998%以上の純度を有する高純度銅に、合金成分
として1〜15ppmのZrを含有させてなる、高い残
留抵抗比を有する超電導安定化材用高純度Cu合金。Claims: 1. An oxygen content of 1 ppm or less, 9
A high-purity Cu alloy for superconducting stabilizer having a high residual resistance ratio, which is obtained by containing 1 to 15 ppm of Zr as an alloy component in high-purity copper having a purity of 9.998% or more.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3206548A JP3047540B2 (en) | 1991-07-23 | 1991-07-23 | High purity Cu alloy for superconducting stabilizer with high residual resistance ratio |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3206548A JP3047540B2 (en) | 1991-07-23 | 1991-07-23 | High purity Cu alloy for superconducting stabilizer with high residual resistance ratio |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0525565A true JPH0525565A (en) | 1993-02-02 |
JP3047540B2 JP3047540B2 (en) | 2000-05-29 |
Family
ID=16525211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3206548A Expired - Lifetime JP3047540B2 (en) | 1991-07-23 | 1991-07-23 | High purity Cu alloy for superconducting stabilizer with high residual resistance ratio |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3047540B2 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1019920A1 (en) * | 1997-10-01 | 2000-07-19 | American Superconductor Corporation | Substrates with improved oxidation resistance |
JP2010174351A (en) * | 2009-01-30 | 2010-08-12 | Mitsubishi Materials Corp | Oxygen-free copper rough drawing wire for winding and method for producing oxygen-free copper rough drawing wire for winding |
CN107002179A (en) * | 2015-01-07 | 2017-08-01 | 三菱综合材料株式会社 | Superconducting line and superconducting coil |
CN107002180A (en) * | 2015-01-07 | 2017-08-01 | 三菱综合材料株式会社 | Superconduction stabilization material, superconducting line and superconducting coil |
JP2017186623A (en) * | 2016-04-06 | 2017-10-12 | 三菱マテリアル株式会社 | Superconductive stabilization material, superconductive wire and superconductive coil |
WO2017175713A1 (en) | 2016-04-06 | 2017-10-12 | 三菱マテリアル株式会社 | Superconducting wire and superconducting coil |
KR20180131536A (en) | 2016-04-06 | 2018-12-10 | 미쓰비시 마테리알 가부시키가이샤 | Superconductivity stable fire |
KR20200070229A (en) | 2017-10-30 | 2020-06-17 | 미쓰비시 마테리알 가부시키가이샤 | Superconducting stabilizer, superconducting wire and superconducting coil |
-
1991
- 1991-07-23 JP JP3206548A patent/JP3047540B2/en not_active Expired - Lifetime
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1019920A1 (en) * | 1997-10-01 | 2000-07-19 | American Superconductor Corporation | Substrates with improved oxidation resistance |
EP1019920A4 (en) * | 1997-10-01 | 2001-02-28 | American Superconductor Corp | Substrates with improved oxidation resistance |
JP2010174351A (en) * | 2009-01-30 | 2010-08-12 | Mitsubishi Materials Corp | Oxygen-free copper rough drawing wire for winding and method for producing oxygen-free copper rough drawing wire for winding |
CN107002179A (en) * | 2015-01-07 | 2017-08-01 | 三菱综合材料株式会社 | Superconducting line and superconducting coil |
CN107002180A (en) * | 2015-01-07 | 2017-08-01 | 三菱综合材料株式会社 | Superconduction stabilization material, superconducting line and superconducting coil |
TWI593813B (en) * | 2015-01-07 | 2017-08-01 | 三菱綜合材料股份有限公司 | Superconducting stabilization material, superconducting wire, and superconducting coil |
KR20170102227A (en) | 2015-01-07 | 2017-09-08 | 미쓰비시 마테리알 가부시키가이샤 | Superconduction stabilizer material, superconducting wire, and superconducting coil |
KR20170102224A (en) | 2015-01-07 | 2017-09-08 | 미쓰비시 마테리알 가부시키가이샤 | Superconducting wire and superconducting coil |
US10964454B2 (en) | 2015-01-07 | 2021-03-30 | Mitsubishi Materials Corporation | Superconducting wire and superconducting coil |
US10964453B2 (en) | 2015-01-07 | 2021-03-30 | Mitsubishi Materials Corporation | Superconducting stabilization material, superconducting wire, and superconducting coil |
WO2017175713A1 (en) | 2016-04-06 | 2017-10-12 | 三菱マテリアル株式会社 | Superconducting wire and superconducting coil |
KR20180127330A (en) | 2016-04-06 | 2018-11-28 | 미쓰비시 마테리알 가부시키가이샤 | Superconducting stabilized fire, superconducting wire and superconducting coil |
KR20180127331A (en) | 2016-04-06 | 2018-11-28 | 미쓰비시 마테리알 가부시키가이샤 | Superconducting wire and superconducting coil |
KR20180131536A (en) | 2016-04-06 | 2018-12-10 | 미쓰비시 마테리알 가부시키가이샤 | Superconductivity stable fire |
CN109072339A (en) * | 2016-04-06 | 2018-12-21 | 三菱综合材料株式会社 | Superconduction stabilization material, superconducting line and superconducting coil |
WO2017175711A1 (en) * | 2016-04-06 | 2017-10-12 | 三菱マテリアル株式会社 | Superconducting stabilizer, superconducting wire and superconducting coil |
JP2017186623A (en) * | 2016-04-06 | 2017-10-12 | 三菱マテリアル株式会社 | Superconductive stabilization material, superconductive wire and superconductive coil |
US10971278B2 (en) | 2016-04-06 | 2021-04-06 | Mitsubishi Materials Corporation | Superconducting wire and superconducting coil |
US11149329B2 (en) | 2016-04-06 | 2021-10-19 | Mitsubishi Materials Corporation | Stabilizer material for superconductor |
KR20200070229A (en) | 2017-10-30 | 2020-06-17 | 미쓰비시 마테리알 가부시키가이샤 | Superconducting stabilizer, superconducting wire and superconducting coil |
US11613794B2 (en) | 2017-10-30 | 2023-03-28 | Mitsubishi Materials Corporation | Superconductivity stabilizing material, superconducting wire and superconducting coil |
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