JP2879346B2 - Superconducting fiber material - Google Patents
Superconducting fiber materialInfo
- Publication number
- JP2879346B2 JP2879346B2 JP1171675A JP17167589A JP2879346B2 JP 2879346 B2 JP2879346 B2 JP 2879346B2 JP 1171675 A JP1171675 A JP 1171675A JP 17167589 A JP17167589 A JP 17167589A JP 2879346 B2 JP2879346 B2 JP 2879346B2
- Authority
- JP
- Japan
- Prior art keywords
- superconducting
- metal
- layer
- fiber
- carbon fiber
- 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.)
- Expired - Lifetime
Links
- 239000002657 fibrous material Substances 0.000 title claims description 14
- 239000000463 material Substances 0.000 claims description 22
- 229910052751 metal Inorganic materials 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 22
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 20
- 239000004917 carbon fiber Substances 0.000 claims description 20
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 239000011162 core material Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 description 13
- 229910002480 Cu-O Inorganic materials 0.000 description 7
- 239000000835 fiber Substances 0.000 description 7
- 229910000765 intermetallic Inorganic materials 0.000 description 4
- 229910015901 Bi-Sr-Ca-Cu-O Inorganic materials 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 238000007772 electroless plating Methods 0.000 description 3
- 238000009713 electroplating Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052745 lead Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- -1 Nb 3 Sn 2 Chemical class 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 150000002603 lanthanum Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 239000013585 weight reducing agent 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
Landscapes
- Other Surface Treatments For Metallic Materials (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、新規な超電導繊維材料に関するものであ
る。更に詳しくは、Ni/Ag被覆炭素繊維をコア材とし超
電導材料をスキン材とする超電導繊維材料に関するもの
である。Description: TECHNICAL FIELD The present invention relates to a novel superconducting fiber material. More specifically, the present invention relates to a superconducting fiber material using a Ni / Ag-coated carbon fiber as a core material and a superconducting material as a skin material.
超電導繊維材料は超電導磁石や超電導ケーブル等とし
て用いられる。The superconducting fiber material is used as a superconducting magnet or a superconducting cable.
［従来の技術及び問題点］ 超電導材料は合金、金属間化合物又は酸化物等として
存在する。金属間化合物や酸化物という化合物系の材料
は硬く、脆いため塑性加工が困難である。しかし、超電
導材料の使用に際し、線材化は不可欠である。このた
め、粉末法、拡散反応法、複合加工法、化学蒸着法等に
より線材化が検討されている。このうち、金属間化合物
では複合加工法、酸化物では金属被覆材を用いた粉末法
による線材化の研究が進んでいる。[Related Art and Problems] Superconducting materials exist as alloys, intermetallic compounds or oxides. Compound-based materials such as intermetallic compounds and oxides are hard and brittle, so that plastic working is difficult. However, when a superconducting material is used, it is indispensable to use a wire. For this reason, a wire rod is being studied by a powder method, a diffusion reaction method, a composite processing method, a chemical vapor deposition method, or the like. Among them, researches on wire processing by intermetallic compounds by a composite processing method and oxides by a powder method using a metal coating material have been advanced.
しかし、これらの方法による線材化はバッチ式の製造
法であり、連続的に長尺の線材を作成することができな
い。また、金属をマトリックスとすると、重量が大きく
なるなどの欠点がある。However, the formation of a wire by these methods is a batch-type manufacturing method, and it is not possible to continuously produce a long wire. Further, when a metal is used as a matrix, there is a drawback such as an increase in weight.
このような欠点を解消するため、炭素繊維をコア材と
し酸化物系超電導材料をスキン材として形成する方法が
提案されている。この場合、局所的な熱発生により超電
導状態が破れたとき金属より導電性が劣る炭素繊維に電
流が流れジュール熱が発生し、これにより常電導状態が
全体に伝播するという欠点がある。局所的な熱発生の原
因には、磁束線の移動が繰返される磁束跳躍等がある。In order to solve such a defect, a method has been proposed in which carbon fiber is used as a core material and an oxide superconducting material is used as a skin material. In this case, when the superconducting state is broken by local heat generation, an electric current flows through the carbon fiber, which is less conductive than metal, and Joule heat is generated, thereby causing the normal conducting state to propagate throughout. Causes of local heat generation include magnetic flux jumps in which the movement of magnetic flux lines is repeated.
［発明の目的］ 本発明の目的は、金属被覆炭素繊維をコア材とし超電
導材料をスキン材とした超電導繊維材料を提供すること
である。[Object of the Invention] An object of the present invention is to provide a superconducting fiber material using a metal-coated carbon fiber as a core material and a superconducting material as a skin material.
本発明によれば、長尺の線材を製造し、軽量化と超電
導性の安定化をはかることができる。ADVANTAGE OF THE INVENTION According to this invention, a long wire can be manufactured and weight reduction and superconductivity can be stabilized.
［発明の構成］ 本発明の構成は次の通りである。[Configuration of the Invention] The configuration of the present invention is as follows.
（１）金属被覆炭素繊維をコア材とし超電導材料をスキ
ン材として形成した超電導繊維材料において、金属被覆
炭素繊維が炭素繊維を少なくとも２層の金属層にて被覆
してなり、最内層がNi層であり、最外層がAg層である超
電導繊維材料。(1) In a superconducting fiber material formed by using a metal-coated carbon fiber as a core material and a superconducting material as a skin material, the metal-coated carbon fiber is formed by coating the carbon fiber with at least two metal layers, and the innermost layer is a Ni layer. And a superconducting fiber material whose outermost layer is an Ag layer.
図面は、本発明の超電導繊維材料の繊維軸方向の断面
図をモデル的に示したものである。The drawings schematically show a cross-sectional view in the fiber axis direction of the superconducting fiber material of the present invention.
炭素繊維１は金属を被覆した繊維である。炭素繊維は
直径が４〜10μｍの単繊維100本程度以上から構成され
るポリアクリロニトリル系、ピッチ系、レーヨン系の炭
素質及び黒鉛質の繊維をいう。The carbon fiber 1 is a fiber coated with a metal. The carbon fibers are polyacrylonitrile-based, pitch-based, rayon-based carbonaceous and graphitic fibers composed of about 100 or more single fibers having a diameter of 4 to 10 µm.
炭素繊維表面への金属被覆の形成は電解メッキ、無電
解メッキ、物理蒸着、科学蒸着、溶射等の方法が知られ
ているが、個々の繊維に均一な被膜を形成し、繊維相互
の接着を防止する点から電解メッキ、無電解メッキが好
ましい。Methods of forming a metal coating on the carbon fiber surface include electrolytic plating, electroless plating, physical vapor deposition, chemical vapor deposition, and thermal spraying.However, a uniform coating is formed on individual fibers to bond the fibers with each other. From the viewpoint of prevention, electrolytic plating and electroless plating are preferred.
被覆の形態は複数層とする。複数層の構成は、最内層
（炭素繊維と接触する層）は炭素繊維と密着性のよいNi
層とし、最外層（超電導材料と接触する層）は、導電性
に優れ酸化物との反応性が低いAg層とした、複数構造と
する。The form of coating is a plurality of layers. The innermost layer (layer in contact with the carbon fiber) is made of Ni with good adhesion to the carbon fiber.
The outermost layer (layer in contact with the superconducting material) is an Ag layer having excellent conductivity and low reactivity with an oxide, and has a plurality of structures.
金属皮膜の厚さは0.1〜１μｍが好ましく、0.1μｍ未
満では導電性の向上が足りず金属被覆の意義が小さい。
また、１μｍ超では、金属被覆炭素繊維の比重が大きく
なり軽量である利点がなくなる。The thickness of the metal film is preferably 0.1 to 1 μm, and if it is less than 0.1 μm, the conductivity is not sufficiently improved, and the significance of the metal coating is small.
On the other hand, if it exceeds 1 μm, the specific gravity of the metal-coated carbon fiber becomes large, and the advantage of light weight is lost.
超電導材料を金属被覆炭素繊維に被覆する方法として
は、気相法が有利である。気相法としては、スパッター
蒸着法、真空蒸着法、化学蒸着法等がある。超電導材料
が合金、金属間化合物あるいは一部の酸化物にみられる
固溶系の材料の場合は電解メッキ、無電解メッキ、蒸
着、溶射等により各元素を層状にコーティングした後熱
処理による固相拡散法により形成することもできる。As a method of coating the superconducting material on the metal-coated carbon fiber, a gas phase method is advantageous. Examples of the vapor phase method include a sputter deposition method, a vacuum deposition method, and a chemical vapor deposition method. If the superconducting material is a solid solution material found in alloys, intermetallic compounds or some oxides, solid phase diffusion method by heat treatment after coating each element in layers by electrolytic plating, electroless plating, vapor deposition, spraying, etc. Can also be formed.
本発明において用いられる超電導材料としてはTc、N
b、Pb、La、Ｖ、Ta、Hg、Pb−Bi等の金属合金、Nb3Ge、
Nb3（Al、Ge）、Nb3Sn、Nb3Al、NbNC、NbN、Y3Si、Y2G
a、Nb3Sn2等の化合物、Ba−Pb−Bi−Ｏ系、La−Ba−Cu
−Ｏ系、La−Sr−Cu−Ｏ系、Ba−Ｙ−Cu−Ｏ系、Bi−Sr
−Ca−Cu−Ｏ系、Tl−Ba−Ca−Cu−Ｏ系等の酸化物があ
る。このうち臨界温度が高いなど超電導特性に優れてい
る。Ba−Ｙ−Cu−Ｏ系、Bi−Sr−Ca−Cu−Ｏ系、あるい
はTl−Ba−Ca−Cu−Ｏ系が特に好ましい。なお、Ba−Ｙ
−Cu−Ｏ系ではBaを他のII a属元素、ＹをScあるいはラ
ンタン系列元素（原子番号57〜71）に置き換えてもよ
い。また、Bi−Sr−Ca−Cu−Ｏ系では超電導層の安定化
のためにPb,In等の元素を１種以上添加してもよい。As the superconducting material used in the present invention, Tc, N
b, Pb, La, V, metal alloys such as Ta, Hg, Pb-Bi, Nb 3 Ge,
Nb 3 (Al, Ge), Nb 3 Sn, Nb 3 Al, NbNC, NbN, Y 3 Si, Y 2 G
a, compounds such as Nb 3 Sn 2 , Ba-Pb-Bi-O system, La-Ba-Cu
-O system, La-Sr-Cu-O system, Ba-Y-Cu-O system, Bi-Sr
There are oxides such as -Ca-Cu-O-based and Tl-Ba-Ca-Cu-O-based. Among them, the superconductivity is excellent such as a high critical temperature. A Ba-Y-Cu-O system, a Bi-Sr-Ca-Cu-O system, or a Tl-Ba-Ca-Cu-O system is particularly preferred. In addition, Ba-Y
In the -Cu-O system, Ba may be replaced with another element belonging to group IIa, and Y may be replaced with Sc or a lanthanum series element (atomic numbers 57 to 71). In the Bi-Sr-Ca-Cu-O system, one or more elements such as Pb and In may be added to stabilize the superconducting layer.
［発明の効果］ 本発明により長尺かつ軽量な超電導繊維材料を得るこ
とができる。また、金属層の存在により、磁束跳躍等に
よる局所的な発熱が起きたとき金属の高い熱伝導率から
熱をすばやく拡散することができる。万一、超電導状態
が壊れた場合も、金属層が電流をバイパスする役目を果
たし、超電導線全体が壊れることを防ぎ、超電導状態を
安定化させる効果がある。[Effect of the Invention] According to the present invention, a long and lightweight superconducting fiber material can be obtained. In addition, due to the presence of the metal layer, when local heat generation occurs due to magnetic flux jumping or the like, heat can be quickly diffused from the high thermal conductivity of the metal. Even if the superconducting state is broken, the metal layer plays a role of bypassing the current, preventing the whole superconducting wire from being broken and stabilizing the superconducting state.
更に、金属層は、超電導層を形成する時、又は、その
後の熱処理時に内部の炭素繊維の反応を防ぐ効果があ
る。Further, the metal layer has an effect of preventing the reaction of the internal carbon fibers when forming the superconducting layer or during the subsequent heat treatment.
［実施例］ Ni被覆炭素繊維〔東邦レーヨン（株）製ベスファイト
−MC〕にAgをコーティングしたものをコア材とし、これ
にBi−Sr−Ca−Cu−Ｏ系酸化物超電導材を真空蒸着によ
りスキン材として形成した。これを大気中でアニールす
ることにより第１図に示すような超電導繊維材料を得
た。この超電導繊維材料の臨界温度は85Kであった。[Example] Ni-coated carbon fiber (Vesfight-MC manufactured by Toho Rayon Co., Ltd.) coated with Ag was used as a core material, and a Bi-Sr-Ca-Cu-O-based oxide superconducting material was vacuum-deposited on the core material. To form a skin material. This was annealed in the air to obtain a superconducting fiber material as shown in FIG. The critical temperature of this superconducting fiber material was 85K.
第１図は、本発明の超電導繊維材料の繊維軸方向の断面
図をモデル的に示したものである。 符号の説明 1:炭素繊維、2a:金属（Ni）層、2b:金属（Ag）層、3:超
電導材料FIG. 1 is a model view showing a cross-sectional view in the fiber axis direction of a superconducting fiber material of the present invention. Explanation of symbols 1: carbon fiber, 2a: metal (Ni) layer, 2b: metal (Ag) layer, 3: superconducting material
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) H01B 13/00 H01B 12/06 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 6 , DB name) H01B 13/00 H01B 12/06
Claims (1)
をスキン材として形成した超電導繊維材料において、金
属被覆炭素繊維が炭素繊維を少なくとも２層の金属層に
て被覆してなり、最内層がNi層であり、最外層がAg層で
あることを特徴とする超電導繊維材料。1. A superconducting fiber material formed by using a metal-coated carbon fiber as a core material and a superconducting material as a skin material, wherein the metal-coated carbon fiber is formed by coating the carbon fiber with at least two metal layers, A superconducting fiber material comprising a Ni layer and an outermost layer being an Ag layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1171675A JP2879346B2 (en) | 1989-07-03 | 1989-07-03 | Superconducting fiber material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1171675A JP2879346B2 (en) | 1989-07-03 | 1989-07-03 | Superconducting fiber material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0337914A JPH0337914A (en) | 1991-02-19 |
| JP2879346B2 true JP2879346B2 (en) | 1999-04-05 |
Family
ID=15927613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1171675A Expired - Lifetime JP2879346B2 (en) | 1989-07-03 | 1989-07-03 | Superconducting fiber material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2879346B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102247321B1 (en) * | 2019-12-12 | 2021-05-03 | 재단법인 한국탄소산업진흥원 | Method for controlling electromagnetic properties of metal coated carbon fiber |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4869703B2 (en) * | 2005-12-19 | 2012-02-08 | 昭和電工株式会社 | Superconductor, superconducting wire, manufacturing method and use thereof |
| ATE495552T1 (en) * | 2006-11-17 | 2011-01-15 | Nexans | METHOD FOR PRODUCING A SUPERCONDUCTIVE ELECTRICAL CONDUCTOR |
-
1989
- 1989-07-03 JP JP1171675A patent/JP2879346B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102247321B1 (en) * | 2019-12-12 | 2021-05-03 | 재단법인 한국탄소산업진흥원 | Method for controlling electromagnetic properties of metal coated carbon fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0337914A (en) | 1991-02-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6291402B1 (en) | Method of making a superconductive oxide body | |
| US3763552A (en) | Method of fabricating a twisted composite superconductor | |
| US5330969A (en) | Method for producing strain tolerant multifilamentary oxide superconducting wire | |
| WO1989012307A1 (en) | Metal coatings for superconducting ceramic fibers, electrical devices therewith, and processes for producing the same | |
| JP2693255B2 (en) | Nb (Bottom 3) Method and apparatus for manufacturing Al-based superconducting wire | |
| JP2879346B2 (en) | Superconducting fiber material | |
| CN1200435C (en) | Preparation method of ultrafine high-temp. superconducting wire material | |
| US4975413A (en) | Superconductor-coated carbon fiber composites | |
| JP2009503792A (en) | Improved structure with high critical current density in YBCO coating | |
| US3868768A (en) | Method of producing a composite superconductor | |
| JP2929622B2 (en) | How to use oxide superconductor | |
| JP3045517B2 (en) | Compound based superconducting stranded wire and method for producing the same | |
| JP4001996B2 (en) | Superconducting precursor composite wire and method for producing superconducting composite wire | |
| JP2585366B2 (en) | Oxide superconducting wire | |
| JP2527179B2 (en) | Method for producing superconducting composite material | |
| US6187718B1 (en) | Carbon composite superconductors | |
| JP2742436B2 (en) | Method for producing compound superconducting stranded wire | |
| JPH0628930A (en) | Oxide superconductor wire rod and manufacture thereof | |
| JP2742437B2 (en) | Method for producing compound superconducting stranded wire | |
| JPH01143108A (en) | Manufacture of ceramics superconductive wire | |
| JP2555089B2 (en) | Method for manufacturing superconducting conductor | |
| JPH01149316A (en) | Manufacture of ceramic superconductive wire | |
| JPH01144514A (en) | Ceramic-based superconductive cable | |
| JPH01144524A (en) | Manufacture of ceramic-based superconductive wire | |
| JPS63244524A (en) | superconducting wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080129 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090129 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100129 Year of fee payment: 11 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100129 Year of fee payment: 11 |