CN207272419U - A kind of new YBCO coating conductors welding point of graphene-containing - Google Patents
A kind of new YBCO coating conductors welding point of graphene-containing Download PDFInfo
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- CN207272419U CN207272419U CN201720764540.6U CN201720764540U CN207272419U CN 207272419 U CN207272419 U CN 207272419U CN 201720764540 U CN201720764540 U CN 201720764540U CN 207272419 U CN207272419 U CN 207272419U
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- 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
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- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
The utility model discloses a kind of new YBCO coating conductors welding point of graphene-containing, including the weld layer between the YBCO coating conductors and coating conductor of both sides, the YBCO coating conductors include layers of copper, silver layer, Hastelloy layer, cushion, YBCO superconducting layers, there is the novel welding layer of graphene-containing between the YBCO coating conductors.The utility model lives in metal Co., Ltd M705 (Sn 3.0Ag 0.5Cu) soldering paste original Japanese thousand and adds graphene powder, graphene powder is finally dispersed in soldering paste by mechanical agitation and ultrasonic wave stirring, form the new solder of graphene-containing.Pass through the utility model, YBCO coating conductor welding points are prepared using the novel welding material of graphene-containing, connection resistance can effectively be reduced, reduce connector to generate heat and quench during military service, the mechanical property of connector is not influenced at the same time, the application range of YBCO CC is widened, further promotes the industrial applications of YBCO CC.
Description
Technical field
The utility model belongs to YBCO coating conductor welding point technical fields, is related to a kind of new YBCO of graphene-containing and applies
Layer conductor welding point.
Background technology
YBCO coating conductors (also referred to as YBCO CC) are because of current-carrying excellent under its high transition temperature, highfield
Ability, and good mechanical property become current high temperature superconducting materia research hotspot, have important application prospect.But by
Current preparation process is formed on, it can be achieved that the YBCO CC maximum lengths commercially produced are no more than 1Km, in high field magnet coiling
Deng at least needing more than thousands of meters of this kind of material in application, therefore, superconducting joint is inevitable.
At present, common connector has two kinds of superconducting joint and non-super docking head.Wherein, superconducting joint generally use high temperature expands
Prepared by arching pushing, its process examination is the copper stability for removing YBCO CC surfaces, in high temperature environments so that two layers of superconductor
Spread and formed.The advantages of this method, is that connection resistance is very small, but mechanical property is excessively poor, and tensile strength is usually not
And the less welding material of particle diameter is usually selected, in certain pressure and temperature in the 1/2. of original material for non-super docking head
Welding is realized in environment.The connector obtained in this way usually has a preferable mechanical strength, but due to weld layer and
The presence of copper protective layer can bring connection resistance, have superconducting joint while how effectively reducing connection resistance preferable
Mechanical performance becomes the problem that academia faces.
There is two-dimensional graphene material very high carrier concentration, excellent mechanics, electric property to occupy low-dimensional always
The hot spot of investigation of materials.Recently, experiment finds that grapheme material has superconductivity, therefore, the utility model under extremely low temperature
The welding point for proposing to be prepared YBCO CC conductors using graphene-containing material is expected on the basis of high mechanical performance is obtained, greatly
Width reduces its connection resistance, and then further promotes the industrial applications of YBCO CC.
Utility model content
To solve the above problem present in the prior art and actual conditions, the utility model provides a kind of graphene-containing
New YBCO coating conductors welding point, including the weld layer between the YBCO coating conductors and coating conductor of both sides, institute
Stating YBCO coating conductors includes layers of copper, silver layer, Hastelloy layer, cushion, YBCO superconducting layers, between the YBCO coating conductors
There is the novel welding layer of graphene-containing.
Preferably, its preparation method comprises the following steps：
1) graphene powder is added in soldering paste, makes graphene powder finally uniform by mechanical agitation and ultrasonic wave stirring
It is dispersed in soldering paste, forms the new solder of graphene-containing；
2) polished with sand paper close to the YBCO CC surfaces of superconducting layer side, to remove sample surfaces oxide layer；
3) alcohol washes surface is used, and the new solder of graphene-containing is quickly applied to the surface after YBCO CC polishings,
In order to avoid good sample surfaces of polishing are aoxidized again；
4) the YBCO CC for needing to weld are fitted to together face-to-face, wrapping up in the attached welding pressure fixture that is put into paper positions
Inside groove, it is put into after briquetting and fixture is placed in material compression test machine platform, by Control experiment machine, realizes mandril to welding sample
The horizontal precommpression of product, pressure 1-3Mpa, after being kept for 0.5-2 minutes, external force is removed；
5) take out sample to be lain on the metal platform of bulk, open controllable temperature adjusting electric iron, be 230 by temperature setting
DEG C, heating welding is carried out to welding sample using shape of a hoof soldering tip, applies appropriate compression in welding process；Finally it is prepared into
The new YBCO coating conductors welding point of graphene-containing.
Preferably, the soldering paste selects Japan thousand to live metal Co., Ltd M705 (Sn-3.0Ag-0.5Cu) soldering paste.
Preferably, the particle size of the sand paper is 15.3 μm.
Preferably, the precompressed pressure of the transverse direction is 2Mpa, and pressure hold time is 1 minute.
Preferably, the welding pressure fixture, including red copper clamp, briquetting, mandril, the red copper clamp be equipped with opening to
The locating slot of side, is mutually equipped with briquetting with the locating slot, circular hole is equipped with above the locating slot, the mandril passes through institute
Circular hole is stated, can be moved up and down, the briquetting welding is placed in above weldment when pressing.
Preferably, the mandril, the material of briquetting are stainless steel.
By the utility model, YBCO coating conductor welding points are prepared using the novel welding material of graphene-containing, can
Effectively to reduce connection resistance, reduce connector and generate heat and quench during military service, while do not influence the mechanical property of connector, open up
The application range of wide YBCO CC, further promotes the industrial applications of YBCO CC.
Brief description of the drawings
Fig. 1 is the structure diagram of the new YBCO coating conductors welding point of graphene-containing of the utility model embodiment.
Fig. 2 is the welding pressure fixture welding course of exerting pressure schematic diagram of the utility model embodiment.
Fig. 3 is the welding pressure clamp structure schematic diagram of the utility model embodiment.
In figure, 1, layers of copper, 2, silver layer, 3, Hastelloy layer, 4, cushion, 5, YBCO superconducting layers, 6, graphene-containing it is new
Type weld layer, 7, compression test, 8, testing machine sensor, 9, pressure head of testing machine, 10, welding pressure fixture, 11, stainless steel top
Bar, 12, red copper clamp, 13, stainless steel briquetting, 14, YBCO connectors.
Embodiment
Technical solutions of the utility model are discussed in detail below in conjunction with the accompanying drawings.
The utility model has very high carrier concentration, excellent mechanics, electric property, Shen using grapheme material
Ask someone to live in metal Co., Ltd M705 (Sn-3.0Ag-0.5Cu) soldering paste original Japanese thousand and add graphene powder, pass through machine
Tool stirs and ultrasonic wave stirring makes graphene powder finally be dispersed in soldering paste, forms the new solder of graphene-containing.
As shown in Figs. 1-3, by taking the short samples of YBCO CC of 110mm as an example, prepared by connector is divided into following steps：First, from length
The short sample that two length are 110mm is cut on YBCO CC samples, then with sand paper (particle size is 15.3 μm) polishing close to super
The YBCO CC surfaces of conducting shell side, to remove sample surfaces oxide layer.Then, with alcohol washes surface, and quickly by graphitiferous
The new solder of alkene is applied to the surface after YBCO CC polishings, in case good sample surfaces of polishing are aoxidized again.According to same
Method prepare another sample.Finally, it would be desirable to which the YBCO CC of welding are fitted to together face-to-face, are wrapped up in paper and attached are put into weldering
Connect inside pressure 10 locating slot of fixture, be put into after briquetting 13 and fixture is placed in 7 platform of material compression test, pass through Control experiment
Machine, realizes horizontal precommpression (pressure 2MPa) of the mandril 11 to welding sample, after being kept for about 1 minute, external force is removed, is taken
Go out sample to be lain on the metal platform of bulk, open controllable temperature adjusting electric iron, be 230 DEG C by temperature setting, using horseshoe
Shape soldering tip carries out heating welding to welding sample, applies appropriate compression in welding process.Finally it is prepared into graphene-containing
New YBCO coating conductors welding point 14.
The welding pressure fixture 10, including red copper clamp 12, briquetting 13, mandril 11, the red copper clamp 12 are equipped with and open
Mouth is mutually equipped with briquetting 13 with the locating slot, circular hole, the mandril is equipped with above the locating slot to the locating slot of side
11 pass through the circular hole, can move up and down, and the welding of briquetting 13 is placed in above weldment when pressing.
The mandril, the material of briquetting are stainless steel.
A kind of new YBCO coating conductors welding point of graphene-containing, including YBCO coating conductors and coating positioned at both sides
Weld layer between conductor, the YBCO coating conductors include layers of copper 1, silver layer 2, Hastelloy layer 3, cushion 4, YBCO superconductions
Layer 5, there is the novel welding layer 6 of graphene-containing between the YBCO coating conductors.
The design method utilizes excellent electricity, the mechanical property of graphene, and being added in traditional welding material for innovation, makes
Obtaining YBCO coating conductor welding points resistance reduces, while does not influence its mechanical property.
It is expected to the utility model proposes the welding point that YBCO CC conductors are prepared using graphene-containing material high in acquisition
On the basis of mechanical performance, its connection resistance is greatly reduced, and then further promotes the industrial applications of YBCO CC.
Finally it should be noted that：The above descriptions are merely preferred embodiments of the present invention, is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it can still modify the technical solution described in foregoing embodiments, or to which part technical characteristic
Carry out equivalent substitution.Where within the spirit and principles of the present invention, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (1)
1. a kind of new YBCO coating conductors welding point of graphene-containing, including YBCO coating conductors and coating positioned at both sides is led
Weld layer between body, the YBCO coating conductors include layers of copper, silver layer, Hastelloy layer, cushion, YBCO superconducting layers, its
It is characterized in that thering is the novel welding layer of graphene-containing between the YBCO coating conductors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720764540.6U CN207272419U (en) | 2017-06-28 | 2017-06-28 | A kind of new YBCO coating conductors welding point of graphene-containing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720764540.6U CN207272419U (en) | 2017-06-28 | 2017-06-28 | A kind of new YBCO coating conductors welding point of graphene-containing |
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| Publication Number | Publication Date |
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| CN207272419U true CN207272419U (en) | 2018-04-27 |
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| CN201720764540.6U Active CN207272419U (en) | 2017-06-28 | 2017-06-28 | A kind of new YBCO coating conductors welding point of graphene-containing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110808123A (en) * | 2019-10-09 | 2020-02-18 | 上海交通大学 | Superconducting tape suitable for superconducting current lead, superconducting current lead and preparation method |
-
2017
- 2017-06-28 CN CN201720764540.6U patent/CN207272419U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110808123A (en) * | 2019-10-09 | 2020-02-18 | 上海交通大学 | Superconducting tape suitable for superconducting current lead, superconducting current lead and preparation method |
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