CN87101570A - Method of attachment between the oxide superconductor - Google Patents
Method of attachment between the oxide superconductor Download PDFInfo
- Publication number
- CN87101570A CN87101570A CN 87101570 CN87101570A CN87101570A CN 87101570 A CN87101570 A CN 87101570A CN 87101570 CN87101570 CN 87101570 CN 87101570 A CN87101570 A CN 87101570A CN 87101570 A CN87101570 A CN 87101570A
- Authority
- CN
- China
- Prior art keywords
- superconductor
- attachment
- oxide superconductor
- oxide
- joint
- 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
- 239000002887 superconductor Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000003466 welding Methods 0.000 claims description 8
- 238000009792 diffusion process Methods 0.000 claims description 7
- 239000011224 oxide ceramic Substances 0.000 claims description 6
- 229910052574 oxide ceramic Inorganic materials 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229910002480 Cu-O Inorganic materials 0.000 claims description 3
- 238000005219 brazing Methods 0.000 claims description 2
- 239000007791 liquid phase Substances 0.000 claims description 2
- 229910009203 Y-Ba-Cu-O Inorganic materials 0.000 claims 1
- 238000003746 solid phase reaction Methods 0.000 claims 1
- 238000010671 solid-state reaction Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 102000040350 B family Human genes 0.000 description 1
- 108091072128 B family Proteins 0.000 description 1
- 229910014472 Ca—O Inorganic materials 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Landscapes
- Manufacturing Of Electrical Connectors (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Ceramic Products (AREA)
Abstract
Method of attachment between a kind of oxide superconductor, feature of the present invention mainly is to coat or be not coated with scolder after superconductor surface machinery polishes, superconductor part (plate, rod, wire rod etc.) is clipped with anchor clamps, and apply certain pressure and heat with certain speed then, the certain hour insulation is reduced to room temperature with certain speed at last, and its advantage is to guarantee that joint has superconductivity and technology is simple, with low cost, this has opened up wide prospect for superconductor technology in practical engineering application.
Description
The invention belongs to welding technology field.
Recently, people have found that the Y, Ba, Cu, oxide series pottery presents superconductivity at liquid nitrogen temperature, this makes superconductor stride forward major step in actual engineering application, general oxide ceramics superconductor all is to make by the high temperature sintering method, shape of products, size and its process all will be subjected to the restriction of certain condition, for making this superconductor large-scale application in actual engineering, must solve the connectivity problem between the superconductor, for now, do not see that as yet the interrelated data report is about the successful connection between the ceramic superconductor, in addition, in actual heavy current engineering, require the joint of superconductor material to present a kind of good superconducting state, otherwise under the heavy current effect, blank area will generate heat rapidly and cause quench, therefore, realize that the connection between the superconductor is one of key of this material large-scale industrial application.
The objective of the invention is to solve the connection between the oxide ceramics superconductor, promptly provide a kind of joint that guarantees that the welding method of excellent conducting performance is arranged.
Material of the present invention is yttrium-barium-coppevapor-oxygen series oxide (A-B-Cu-O oxide, wherein A is an III B family element, B is an II A family element), method provided by the present invention is to carrying out mechanical treatment earlier in superconductor surface to be connected, coat (not being coated with sometimes) scolder then on the surface, then superconductor to be welded is carried out clamping, and on joint, apply 0.01～10MPa pressure with mechanical means, the Diffusion Welding of heating at last, heating can be local warming, also can be that integral body is heated, Diffusion Welding can be oral by the connection that solid-state anti-attitude reaction generates at interface, also can be the diffusion brazing of being participated in by a small amount of liquid phase reactor.
Concrete technological process provided by the present invention:
1, the surface to be connected with the oxide ceramics superconductor polishes and polishes, and coats (or not being coated with) scolder on demand at welding surface.
2, other part (plate, rod, wire rod etc.) of superconductor to be connected is clipped with anchor clamps, and apply certain pressure.
3, heat gradually to 500 ℃～1100 ℃ high temperature, be incubated 10 minutes～4 hours, realize Diffusion Welding, slowly cool to room temperature again.
Connection technology provided by the present invention can be successful the oxide ceramics superconductor of series such as connection Y-Ba-Ca-O, and the superconductivity that has guaranteed the joint is not less than mother metal, its advantage is that technology is simple, cost is low, joint performance is reliable and stable, this for superconductor technology in real process is used and the production of superconductive element opened up wide prospect.
Superconductor joint technology provided by the invention can be divided into and add scolder and do not add wlding two classes, and its technical process is illustrated by embodiment.
Embodiment 1: after the direct connection between the superconductor will wait to connect superconductor surface rubbing and polishing, clip with anchor clamps, select the pressure of 0.01～10MPa by different superconductors, heat then, the temperature of heating is 800 ℃～1100 ℃, be incubated 10 minutes～4 hours, again slowly to reduce to room temperature less than 20 ℃～30 ℃/minute speed.
Embodiment 2: add the connection of scolder between the superconductor.After superconductor waited to connect the surface rubbing ramming head, evenly be coated with the last layer scolder and (select suitable solder according to the different series oxide superconductor, being modulated into pasty state with alcohol uses), with anchor clamps two superconductors are clipped again, 0.01～10MPa pressure is heated 800 ℃～1100 ℃ in addition, keeps 10 minutes～4 hours, slowly to reduce to room temperature, can obtain the connection between the superconductor again less than 20 ℃～30 ℃/minute speed.
Claims (4)
1, the method for attachment between the oxide superconductor the invention is characterized in two oxide ceramics superconductor surface rubbings, after the machinery assembling, applies the pressure of 0.01～10MPa on joint, heats under normal pressure at last and carries out Diffusion Welding.
2, by the method for attachment between the described oxide superconductor of claim 1, it is characterized in that heating adds to 500 ℃～1100 ℃ high temperature, keeps 10 minutes～4 hours, slowly cools to room temperature again.
3, by the method for attachment between the described oxide superconductor of claim 1, it is characterized in that the oxide ceramics superconductor is:
Y-Ba-Cu-O system
La-Sr-Cu-O system
La-Ba-Cu-O system
4, by the method for attachment between the described oxide superconductor of claim 1, it is characterized in that Diffusion Welding can be at the jointing of interface by the solid-state reaction generation, also can be the diffusion brazing of participating in by a small amount of liquid phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87101570 CN87101570A (en) | 1987-06-08 | 1987-06-08 | Method of attachment between the oxide superconductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87101570 CN87101570A (en) | 1987-06-08 | 1987-06-08 | Method of attachment between the oxide superconductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87101570A true CN87101570A (en) | 1988-12-28 |
Family
ID=4813536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87101570 Pending CN87101570A (en) | 1987-06-08 | 1987-06-08 | Method of attachment between the oxide superconductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87101570A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920983A (en) * | 2014-05-05 | 2014-07-16 | 西南科技大学 | Superconductor cold pressing connecting method |
| CN104671818A (en) * | 2014-12-19 | 2015-06-03 | 上海大学 | Technology for YBCO high-temperature superconducting thin film strips with silver layers through diffusion welding |
| CN104710186A (en) * | 2014-12-19 | 2015-06-17 | 上海大学 | YBCO high-temperature superconductive film band connection technology and special-purpose auxiliary clamp thereof |
| CN105826789A (en) * | 2016-03-29 | 2016-08-03 | 上海大学 | ReBa2Cu3O7-[Delta] high-temperature superconducting-thin film strip attachment technology and pressure heating system thereof |
| CN110326062A (en) * | 2017-02-27 | 2019-10-11 | 古河电气工业株式会社 | The connection structure of superconducting wire |
| WO2023045288A1 (en) * | 2021-09-24 | 2023-03-30 | 上海交通大学 | Solder-free welded joint and welding manufacturing method therefor |
-
1987
- 1987-06-08 CN CN 87101570 patent/CN87101570A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920983A (en) * | 2014-05-05 | 2014-07-16 | 西南科技大学 | Superconductor cold pressing connecting method |
| CN104671818A (en) * | 2014-12-19 | 2015-06-03 | 上海大学 | Technology for YBCO high-temperature superconducting thin film strips with silver layers through diffusion welding |
| CN104710186A (en) * | 2014-12-19 | 2015-06-17 | 上海大学 | YBCO high-temperature superconductive film band connection technology and special-purpose auxiliary clamp thereof |
| CN104710186B (en) * | 2014-12-19 | 2016-12-07 | 上海大学 | The Joining Technology of YBCO high-temperature superconducting thin film band and special auxiliary clamp thereof |
| CN105826789A (en) * | 2016-03-29 | 2016-08-03 | 上海大学 | ReBa2Cu3O7-[Delta] high-temperature superconducting-thin film strip attachment technology and pressure heating system thereof |
| CN110326062A (en) * | 2017-02-27 | 2019-10-11 | 古河电气工业株式会社 | The connection structure of superconducting wire |
| US11289829B2 (en) | 2017-02-27 | 2022-03-29 | Furukawa Electric Co., Ltd. | Connection structure for superconductor wires |
| CN110326062B (en) * | 2017-02-27 | 2023-01-13 | 古河电气工业株式会社 | Connection structure of superconducting wire |
| WO2023045288A1 (en) * | 2021-09-24 | 2023-03-30 | 上海交通大学 | Solder-free welded joint and welding manufacturing method therefor |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |