CN105609627A - Pressure oxygen absorption annealing method for REBCO superconducting material - Google Patents
Pressure oxygen absorption annealing method for REBCO superconducting material Download PDFInfo
- Publication number
- CN105609627A CN105609627A CN201610169261.5A CN201610169261A CN105609627A CN 105609627 A CN105609627 A CN 105609627A CN 201610169261 A CN201610169261 A CN 201610169261A CN 105609627 A CN105609627 A CN 105609627A
- Authority
- CN
- China
- Prior art keywords
- annealing
- rebco
- oxygen
- superconductor
- annealing furnace
- 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
- 238000000137 annealing Methods 0.000 title claims abstract description 178
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 115
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 115
- 239000001301 oxygen Substances 0.000 title claims abstract description 115
- 238000000034 method Methods 0.000 title claims abstract description 40
- 239000000463 material Substances 0.000 title claims abstract description 24
- 238000010521 absorption reaction Methods 0.000 title abstract 3
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 239000002887 superconductor Substances 0.000 claims description 99
- 238000002360 preparation method Methods 0.000 claims description 12
- 238000010792 warming Methods 0.000 claims description 9
- 230000001965 increasing effect Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract 2
- 230000007547 defect Effects 0.000 description 4
- 230000005291 magnetic effect Effects 0.000 description 3
- 230000036961 partial effect Effects 0.000 description 3
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005292 diamagnetic effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
- H10N60/01—Manufacture or treatment
- H10N60/0268—Manufacture or treatment of devices comprising copper oxide
- H10N60/0661—Processes performed after copper oxide formation, e.g. patterning
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention discloses a pressure oxygen absorption annealing method for an REBCO superconducting material. The method comprises the following steps: preparing the REBCO superconducting material; putting the REBCO superconducting material into an annealing furnace; vacuumizing the annealing furnace; charging oxygen into the annealing furnace, and adjusting the pressure of the oxygen in the annealing furnace via a pressure adjusting valve; heating the annealing furnace to an annealing temperature which is 450-550 DEG C, and controlling the heating rate not more than 6 DEG C per minute; keeping a constant temperature, so that the REBCO superconducting material sufficiently absorbs oxygen; cooling the annealing furnace to room temperature, and controlling the cooling rate; taking out the REBCO superconducting material after pressure oxygen absorption annealing, and performing critical current test on the REBCO superconducting material. According to the method, the pressure of the oxygen is controlled, so that the superconducting material sufficiently absorbs oxygen during annealing, and then the critical current value of the superconducting material is increased; the annealing time can be reduced under the condition of high critical current value, and the production efficiency is improved.
Description
Technical field
The present invention relates to superconductor preparation field, the pressurization that is specifically related to a kind of REBCO superconductor is inhaledOxygen method for annealing.
Background technology
Superconductor is under certain cryogenic conditions, to present that resistance equals zero and certain diamagnetic materialMaterial, can be widely used in making the fields such as superconductive current limiter, superconducting magnet and power cable. REBCO (REFor rare earth elements such as Y, Gd, Sm, Nd, Dy) as a kind of high temperature superconducting materia, because having height, it facesBoundary's temperature, high critical current and in magnetic field better superconductivity, become gradually in recent years superconductionStudy hotspot in material.
REBCO(REBa2Cu3O7-x, wherein x is 0≤x≤0.6) and superconductor belongs to complicated perovskite structure,Its oxygen content is not 7 under perfect condition conventionally, when oxygen content x gradually changes to 0.6 time by 0, and superconductionThe structure of material turns to Tetragonal by orthogonal phase transformation, and the superconductivity of material fades away. But oxygen contentNot more high better, appropriate oxygen defect can be introduced defect in material, plays the object of pinning magnetic flux.Therefore, in the time of preparation high-performance REBCO superconductor, the oxygen content of easier its inside configuration of control of energySeem particularly important.
Research shows, the oxygen content in REBCO material and annealing process and ambient oxygen partial pressure are closely related. ExistingIn some REBCO superconductor annealing processes, its inner oxygen content is conventionally by optimizing annealing temperature and annealingTime is controlled. Now conventional annealing process often exists that oxygen uptake is insufficient and annealing time is longProblem. On the one hand, oxygen uptake is insufficient can affect REBCO superconductor critical electric current value; Annealing on the other handTime, long meeting affect production efficiency.
Therefore, how REBCO superconductor preparation field, realize and enhancing productivity and superconduction material nowThe sufficient technique of material oxygen uptake is letter problem to be solved in whole superconductor field.
Summary of the invention
The object of the invention is to overcome the above problem that prior art exists, a kind of REBCO superconduction is providedThe oxygen inhalation under pressure method for annealing of material, the oxygen inhalation under pressure method for annealing of above-mentioned REBCO superconductor is in superconductionIn anneal of material process, introduce a new oxygen pressure technological parameter, increased and increase oxygen pressure techniqueControl, make superconductor oxygen uptake in oxygen uptake annealing process more abundant.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is real by the following technical programsExisting:
An oxygen inhalation under pressure method for annealing for REBCO superconductor, is characterized in that, comprises the following steps:
S100: preparation REBCO superconductor, described REBCO superconductor comprise REBCO superconducting layer andBe arranged on the Ag stabilized zone on described REBCO superconducting layer;
S200: described REBCO superconductor is put in annealing furnace;
S300: will vacuumize in described annealing furnace;
S400: be filled with oxygen in described annealing furnace, described annealing furnace is provided with pressure regulator valve, by describedPressure regulator valve regulates the oxygen pressure in described annealing furnace, and oxygen pressure in described annealing furnace is minimum is 1atm;
S500: described annealing furnace heats up, and is warming up to annealing temperature, and described annealing temperature is 450 DEG C-550 DEG C,Control heating rate and be no more than 6 DEG C/min;
In S600:S500, reach after annealing temperature, keep annealing temperature constant temperature, make described REBCO superconductionThe abundant oxygen uptake of material;
S700: described annealing furnace is cooled to room temperature, controls rate of temperature fall and is no more than 1 DEG C/min;
S800: take out the described REBCO superconductor after oxygen inhalation under pressure annealing, to described REBCO superconductionMaterial carries out critical current test.
Preferably, in described S400, regulate oxygen pressure to the above 0-0.05MPa of 1atm by pressure regulator valve.
Preferably, the annealing temperature in described S500 is 500 DEG C, and heating rate is 3-6 DEG C/min.
Preferably, in described S600, constant temperature time is 4-6h.
Preferably, in described S700, rate of temperature fall is 0.5-1 DEG C/min.
Preferably, in described S800, detect the critical electric current value of described REBCO superconductor, as described S400When middle oxygen pressure is 0.015MPa, the critical electric current value of described REBCO superconductor is the highest, described inThe oxygen content of REBCO superconductor is in good state.
The invention has the beneficial effects as follows:
The oxygen inhalation under pressure method for annealing of one, REBCO superconductor disclosed by the invention moves back at superconductorIn fire process, introduce a new oxygen pressure technological parameter, increased the control that increases oxygen pressure technique,Make superconductor oxygen uptake in oxygen uptake annealing process more abundant.
Two, the oxygen inhalation under pressure method for annealing technique of REBCO superconductor of the present invention is simple, by rightThe control of oxygen pressure, can increase the diffusion rate of oxygen in superconductor, and superconductor is being moved backIn fire process, oxygen uptake is more abundant, thereby increases the critical electric current value of superconductor; And can be high in guaranteeIn the situation of critical electric current value, reduce annealing time, improved production efficiency.
Three, the oxygen inhalation under pressure method for annealing technological parameter controllability of REBCO superconductor of the present invention is good,For example, annealing temperature, annealing time, heating rate, rate of temperature fall are easy to adjust, make this technique energyEnough extensive uses.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand skill of the present inventionArt means, and can being implemented according to the content of description, below with preferred embodiment of the present invention and joinClosing accompanying drawing is described in detail as follows. The specific embodiment of the present invention is given in detail by following examples and accompanying drawing thereofGo out.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme in embodiment of the present invention technology, below will be to embodiment skillIn art description, the accompanying drawing of required use is briefly described, apparently, and the accompanying drawing in the following describesBe only some embodiments of the present invention, for those of ordinary skill in the art, do not paying creationUnder the prerequisite of property work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is that REBCO superconductor critical current of the present invention is with different oxygen pressure situation of change figure.
Wherein, abscissa is oxygen pressure, and ordinate is critical electric current value.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried outDescribe clearly and completely, obviously, described embodiment is only the present invention's part embodiment, andNot whole embodiment. Based on the embodiment in the present invention, those of ordinary skill in the art are not doingGo out the every other embodiment obtaining under creative work prerequisite, all belong to the scope of protection of the invention.
Embodiment 1
The oxygen inhalation under pressure method for annealing that discloses a kind of REBCO superconductor in embodiment 1, mainly comprisesFollowing steps:
S100: preparation REBCO superconductor, above-mentioned REBCO superconductor comprise REBCO superconducting layer andBe arranged on the Ag stabilized zone on above-mentioned REBCO superconducting layer.
S200: above-mentioned REBCO superconductor is put in annealing furnace.
S300: will in above-mentioned annealing furnace, vacuumize, while ensureing the annealing of above-mentioned REBCO superconductor at oxygenUnder atmosphere, carry out.
S400: be filled with oxygen in above-mentioned annealing furnace, above-mentioned annealing furnace is provided with pressure regulator valve, by above-mentionedPressure regulator valve regulates the oxygen pressure in above-mentioned annealing furnace, and the oxygen pressure in above-mentioned annealing furnace is 1atm;
S500: above-mentioned annealing furnace heats up, and is warming up to annealing temperature, and above-mentioned annealing temperature is 450 DEG C, controlsApproximately 3 DEG C/min of heating rate, the 100min that approximately heats up is to above-mentioned annealing temperature.
In S600:S500, reach after 450 DEG C of annealing temperatures, keep annealing temperature constant temperature, constant temperature 4h, makesState the abundant oxygen uptake of REBCO superconductor;
S700: above-mentioned annealing furnace is cooled to room temperature, is cooled to room temperature by 450 DEG C, controls rate of temperature fall to be0.5℃/min。
S800: take out the above-mentioned REBCO superconductor after oxygen inhalation under pressure annealing, to above-mentioned REBCO superconductionMaterial carries out critical current test.
Embodiment 2
The oxygen inhalation under pressure method for annealing that discloses a kind of REBCO superconductor in embodiment 2, mainly comprisesFollowing steps:
S100: preparation REBCO superconductor, above-mentioned REBCO superconductor comprise REBCO superconducting layer andBe arranged on the Ag stabilized zone on above-mentioned REBCO superconducting layer.
S200: above-mentioned REBCO superconductor is put in annealing furnace.
S300: will in above-mentioned annealing furnace, vacuumize, while ensureing the annealing of above-mentioned REBCO superconductor at oxygenUnder atmosphere, carry out.
S400: be filled with oxygen in above-mentioned annealing furnace, above-mentioned annealing furnace is provided with pressure regulator valve, by above-mentionedPressure regulator valve regulates the oxygen pressure in above-mentioned annealing furnace, the oxygen pressure in above-mentioned annealing furnace be 1atm withUpper 0.010MPa;
S500: above-mentioned annealing furnace heats up, and is warming up to annealing temperature, and above-mentioned annealing temperature is 500 DEG C, controlsApproximately 5 DEG C/min of heating rate, the 100min that approximately heats up is to above-mentioned annealing temperature.
In S600:S500, reach after 500 DEG C of annealing temperatures, keep annealing temperature constant temperature, constant temperature 5h, makesState the abundant oxygen uptake of REBCO superconductor;
S700: above-mentioned annealing furnace is cooled to room temperature, is cooled to room temperature by 500 DEG C, controls rate of temperature fall0.5℃/min。
S800: take out the above-mentioned REBCO superconductor after oxygen inhalation under pressure annealing, to above-mentioned REBCO superconductionMaterial carries out critical current test.
Embodiment 3
The oxygen inhalation under pressure method for annealing that discloses a kind of REBCO superconductor in embodiment 3, mainly comprisesFollowing steps:
S100: preparation REBCO superconductor, above-mentioned REBCO superconductor comprise REBCO superconducting layer andBe arranged on the Ag stabilized zone on above-mentioned REBCO superconducting layer.
S200: above-mentioned REBCO superconductor is put in annealing furnace.
S300: will in above-mentioned annealing furnace, vacuumize, while ensureing the annealing of above-mentioned REBCO superconductor at oxygenUnder atmosphere, carry out.
S400: be filled with oxygen in above-mentioned annealing furnace, above-mentioned annealing furnace is provided with pressure regulator valve, by above-mentionedPressure regulator valve regulates the oxygen pressure in above-mentioned annealing furnace, the oxygen pressure in above-mentioned annealing furnace be 1atm withUpper 0.015MPa;
S500: above-mentioned annealing furnace heats up, and is warming up to annealing temperature, and above-mentioned annealing temperature is 500 DEG C, controlsApproximately 5 DEG C/min of heating rate, the 100min that approximately heats up is to above-mentioned annealing temperature.
In S600:S500, reach after 500 DEG C of annealing temperatures, keep annealing temperature constant temperature, constant temperature 5h, makesState the abundant oxygen uptake of REBCO superconductor;
S700: above-mentioned annealing furnace is cooled to room temperature, is cooled to room temperature by 500 DEG C, controls rate of temperature fall0.5℃/min。
S800: take out the above-mentioned REBCO superconductor after oxygen inhalation under pressure annealing, to above-mentioned REBCO superconductionMaterial carries out critical current test.
Embodiment 4
The oxygen inhalation under pressure method for annealing that discloses a kind of REBCO superconductor in embodiment 4, mainly comprisesFollowing steps:
S100: preparation REBCO superconductor, above-mentioned REBCO superconductor comprise REBCO superconducting layer andBe arranged on the Ag stabilized zone on above-mentioned REBCO superconducting layer.
S200: above-mentioned REBCO superconductor is put in annealing furnace.
S300: will in above-mentioned annealing furnace, vacuumize, while ensureing the annealing of above-mentioned REBCO superconductor at oxygenUnder atmosphere, carry out.
S400: be filled with oxygen in above-mentioned annealing furnace, above-mentioned annealing furnace is provided with pressure regulator valve, by above-mentionedPressure regulator valve regulates the oxygen pressure in above-mentioned annealing furnace, the oxygen pressure in above-mentioned annealing furnace be 1atm withUpper 0.02MPa;
S500: above-mentioned annealing furnace heats up, and is warming up to annealing temperature, and above-mentioned annealing temperature is 500 DEG C, controlsApproximately 5 DEG C/min of heating rate, the 100min that approximately heats up is to above-mentioned annealing temperature.
In S600:S500, reach after 500 DEG C of annealing temperatures, keep annealing temperature constant temperature, constant temperature 5h, makesState the abundant oxygen uptake of REBCO superconductor;
S700: above-mentioned annealing furnace is cooled to room temperature, is cooled to room temperature by 500 DEG C, controls rate of temperature fall0.5℃/min。
S800: take out the above-mentioned REBCO superconductor after oxygen inhalation under pressure annealing, to above-mentioned REBCO superconductionMaterial carries out critical current test.
Embodiment 5
The oxygen inhalation under pressure method for annealing that discloses a kind of REBCO superconductor in embodiment 5, mainly comprisesFollowing steps:
S100: preparation REBCO superconductor, above-mentioned REBCO superconductor comprise REBCO superconducting layer andBe arranged on the Ag stabilized zone on above-mentioned REBCO superconducting layer.
S200: above-mentioned REBCO superconductor is put in annealing furnace.
S300: will in above-mentioned annealing furnace, vacuumize, while ensureing the annealing of above-mentioned REBCO superconductor at oxygenUnder atmosphere, carry out.
S400: be filled with oxygen in above-mentioned annealing furnace, above-mentioned annealing furnace is provided with pressure regulator valve, by above-mentionedPressure regulator valve regulates the oxygen pressure in above-mentioned annealing furnace, the oxygen pressure in above-mentioned annealing furnace be 1atm withUpper 0.025MPa;
S500: above-mentioned annealing furnace heats up, and is warming up to annealing temperature, and above-mentioned annealing temperature is 500 DEG C, controlsApproximately 5 DEG C/min of heating rate, the 100min that approximately heats up is to above-mentioned annealing temperature.
In S600:S500, reach after 500 DEG C of annealing temperatures, keep annealing temperature constant temperature, constant temperature 5h, makesState the abundant oxygen uptake of REBCO superconductor;
S700: above-mentioned annealing furnace is cooled to room temperature, is cooled to room temperature by 500 DEG C, controls rate of temperature fall0.5℃/min。
S800: take out the above-mentioned REBCO superconductor after oxygen inhalation under pressure annealing, to above-mentioned REBCO superconductionMaterial carries out critical current test.
Embodiment 6
The oxygen inhalation under pressure method for annealing that discloses a kind of REBCO superconductor in embodiment 6, mainly comprisesFollowing steps:
S100: preparation REBCO superconductor, above-mentioned REBCO superconductor comprise REBCO superconducting layer andBe arranged on the Ag stabilized zone on above-mentioned REBCO superconducting layer.
S200: above-mentioned REBCO superconductor is put in annealing furnace.
S300: will in above-mentioned annealing furnace, vacuumize, while ensureing the annealing of above-mentioned REBCO superconductor at oxygenUnder atmosphere, carry out.
S400: be filled with oxygen in above-mentioned annealing furnace, above-mentioned annealing furnace is provided with pressure regulator valve, by above-mentionedPressure regulator valve regulates the oxygen pressure in above-mentioned annealing furnace, the oxygen pressure in above-mentioned annealing furnace be 1atm withUpper 0.030MPa;
S500: above-mentioned annealing furnace heats up, and is warming up to annealing temperature, and above-mentioned annealing temperature is 500 DEG C, controlsApproximately 5 DEG C/min of heating rate, the 100min that approximately heats up is to above-mentioned annealing temperature.
In S600:S500, reach after 500 DEG C of annealing temperatures, keep annealing temperature constant temperature, constant temperature 5h, makesState the abundant oxygen uptake of REBCO superconductor;
S700: above-mentioned annealing furnace is cooled to room temperature, is cooled to room temperature by 500 DEG C, controls rate of temperature fall0.5℃/min。
S800: take out the above-mentioned REBCO superconductor after oxygen inhalation under pressure annealing, to above-mentioned REBCO superconductionMaterial carries out critical current test.
Embodiment 7
The oxygen inhalation under pressure method for annealing that discloses a kind of REBCO superconductor in embodiment 7, mainly comprisesFollowing steps:
S100: preparation REBCO superconductor, above-mentioned REBCO superconductor comprise REBCO superconducting layer andBe arranged on the Ag stabilized zone on above-mentioned REBCO superconducting layer.
S200: above-mentioned REBCO superconductor is put in annealing furnace.
S300: will in above-mentioned annealing furnace, vacuumize, while ensureing the annealing of above-mentioned REBCO superconductor at oxygenUnder atmosphere, carry out.
S400: be filled with oxygen in above-mentioned annealing furnace, above-mentioned annealing furnace is provided with pressure regulator valve, by above-mentionedPressure regulator valve regulates the oxygen pressure in above-mentioned annealing furnace, the oxygen pressure in above-mentioned annealing furnace be 1atm withUpper 0.015MPa;
S500: above-mentioned annealing furnace heats up, and is warming up to annealing temperature, and above-mentioned annealing temperature is 550 DEG C, controlsApproximately 6 DEG C/min of heating rate.
In S600:S500, reach after 500 DEG C of annealing temperatures, keep annealing temperature constant temperature, constant temperature 6h, makesState the abundant oxygen uptake of REBCO superconductor;
S700: above-mentioned annealing furnace is cooled to room temperature, is cooled to room temperature by 550 DEG C, controls 1 DEG C of rate of temperature fall/min。
S800: take out the above-mentioned REBCO superconductor after oxygen inhalation under pressure annealing, to above-mentioned REBCO superconductionMaterial carries out critical current test.
Embodiment 8
REBCO superconductor after embodiment 8 anneals to oxygen inhalation under pressure in embodiment 1-7 carries out critical electricityCurrent test, critical current test result as shown in fig. 1, within the scope of the above 0-0.015MPa of 1atm,Along with oxygen pressure increases, the critical electric current value of REBCO superconductor is increasing, wherein at 0.015MPaTime reach peak, then along with oxygen pressure increases, the critical electric current value of REBCO superconductor diminishes gradually.
REBCO(REBa2Cu3O7-x, x is 0≤x≤0.6) and superconductor belongs to complicated perovskite structure,Its oxygen content is not 7 under perfect condition conventionally, when oxygen content x gradually changes to 0.6 time by 0, superThe structure of leading material turns to Tetragonal by orthogonal phase transformation, and the superconductivity of material fades away. But oxygen containsAmount is not more high better, and appropriate oxygen defect can be introduced defect in material, plays the order of pinning magnetic flux. Therefore, in above-described embodiment, by adjusting different partials pressure of oxygen, we can well control superconduction materialOxygen content in material, thus realize high critical current.
As shown in fig. 1 for partial pressure of oxygen superconductor in the time of the above 0.015Mpa of 1atm have more suitableOxygen content, thus higher critical current obtained.
The oxygen inhalation under pressure method for annealing of the REBCO superconductor in above-described embodiment, by being adjusted in oxygenOxygen pressure under atmosphere, can increase the diffusion rate of oxygen in superconductor, and superconductor is being moved backIn fire process, oxygen uptake is more abundant, thereby increases the critical electric current value of superconductor, compares existing lehr attendantSkill, can reduce annealing time, thereby enhance productivity.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field can be realized or useThe present invention. To be aobvious and easy for those skilled in the art to the multiple amendment of these embodimentSee, General Principle as defined herein can be in the situation that not departing from the spirit or scope of the present invention,Realize in other embodiments. Therefore, the present invention will can not be restricted to these embodiment shown in this article,But to meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. an oxygen inhalation under pressure method for annealing for REBCO superconductor, is characterized in that, comprises following stepRapid:
S100: preparation REBCO superconductor, described REBCO superconductor comprise REBCO superconducting layer andBe arranged on the Ag stabilized zone on described REBCO superconducting layer;
S200: described REBCO superconductor is put in annealing furnace;
S300: will vacuumize in described annealing furnace;
S400: be filled with oxygen in described annealing furnace, described annealing furnace is provided with pressure regulator valve, by describedPressure regulator valve regulates the oxygen pressure in described annealing furnace, and oxygen pressure in described annealing furnace is minimum is 1atm;
S500: described annealing furnace heats up, and is warming up to annealing temperature, and described annealing temperature is 450 DEG C-550 DEG C,Control heating rate and be no more than 6 DEG C/min;
In S600:S500, reach after annealing temperature, keep annealing temperature constant temperature, make described REBCO superconductionThe abundant oxygen uptake of material;
S700: described annealing furnace is cooled to room temperature, controls rate of temperature fall and is no more than 1 DEG C/min;
S800: take out the described REBCO superconductor after oxygen inhalation under pressure annealing, to described REBCO superconductionMaterial carries out critical current test.
2. the oxygen inhalation under pressure method for annealing of REBCO superconductor according to claim 1, its featureBe, in described S400, regulate oxygen pressure to the above 0-0.05MPa of 1atm by pressure regulator valve.
3. the oxygen inhalation under pressure method for annealing of REBCO superconductor according to claim 1, its featureBe, the annealing temperature in described S500 is 500 DEG C, and heating rate is 3-6 DEG C/min.
4. the oxygen inhalation under pressure method for annealing of REBCO superconductor according to claim 1, its featureBe, in described S600, constant temperature time is 4-6h.
5. the oxygen inhalation under pressure method for annealing of REBCO superconductor according to claim 1, its featureBe, in described S700, rate of temperature fall is 0.5-1 DEG C/min.
6. the oxygen inhalation under pressure method for annealing of REBCO superconductor according to claim 1, its featureBe, in described S800, detect the critical electric current value of described REBCO superconductor, when in described S400When oxygen pressure is 0.015MPa, the critical electric current value of described REBCO superconductor is the highest, described REBCOThe oxygen content of superconductor is in good state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610169261.5A CN105609627A (en) | 2016-03-23 | 2016-03-23 | Pressure oxygen absorption annealing method for REBCO superconducting material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610169261.5A CN105609627A (en) | 2016-03-23 | 2016-03-23 | Pressure oxygen absorption annealing method for REBCO superconducting material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105609627A true CN105609627A (en) | 2016-05-25 |
Family
ID=55989383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610169261.5A Pending CN105609627A (en) | 2016-03-23 | 2016-03-23 | Pressure oxygen absorption annealing method for REBCO superconducting material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105609627A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112233850A (en) * | 2020-09-11 | 2021-01-15 | 上海大学 | Method for improving high-temperature superconducting coating conductor microstructure and current-carrying capacity thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102682919A (en) * | 2012-05-08 | 2012-09-19 | 上海超导科技股份有限公司 | Method for annealing simplified, efficient, low-cost and high-temperature superconductive long band |
-
2016
- 2016-03-23 CN CN201610169261.5A patent/CN105609627A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102682919A (en) * | 2012-05-08 | 2012-09-19 | 上海超导科技股份有限公司 | Method for annealing simplified, efficient, low-cost and high-temperature superconductive long band |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112233850A (en) * | 2020-09-11 | 2021-01-15 | 上海大学 | Method for improving high-temperature superconducting coating conductor microstructure and current-carrying capacity thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106399756B (en) | A kind of preparation method of high-performance cubic texture nickel-base alloy base band | |
| WO2009124447A1 (en) | A high temperature superconductive material and the preparation method thereof | |
| CN103924108B (en) | A kind of nonmagnetic strong cubic texture copper base alloy composite baseband and preparation method thereof | |
| CN105609627A (en) | Pressure oxygen absorption annealing method for REBCO superconducting material | |
| CN107267901A (en) | A kind of preparation method of high intensity without ferromagnetism texture Ni W alloy base band | |
| CN104217817B (en) | Preparation (Ba/Sr)1-xkxfe2as2superconducting wire or the method for band | |
| CN105523527B (en) | A kind of dilute magnetic semiconductor material of yellow copper structure and preparation method thereof | |
| CN102615280A (en) | Method for manufacturing iron-based superconductor by using SPS (Spark Plasma Sintering) technology | |
| CN104928660B (en) | Superconducting coating YxCe1‑xO2/La2Zr2O7The preparation method of compound transition layer film | |
| CN102832333B (en) | Heat treatment method of Bi-2212 superconducting line/strip | |
| CN102682919B (en) | Method for annealing simplified, efficient, low-cost and high-temperature superconductive long band | |
| CN103086709A (en) | Preparation method of yttrium-barium-copper-oxidize superconducting film | |
| CN109524174A (en) | A kind of preparation method of Bi-2212 hts tape | |
| CN105541338B (en) | The method that first position magnesium diboride bulk superconducting critical current density is improved by autoreaction | |
| CN105405957B (en) | A kind of manufacturing method of bismuth system oxide superconductivity wire | |
| CN101880165B (en) | Method for preparing iron-based superconductor through short-time solid-phase sintering technology | |
| CN103243383B (en) | A kind of cooling rate controls the growth method of high-temperature superconductor block material | |
| KR20100094049A (en) | Fabrication method of mgb2 superconducting wire | |
| Dou et al. | Optimization of processing to improve critical current density of Ag/Bi-2223 tapes | |
| Wu et al. | Precipitation from Gd/sub 1+ x/Ba/sub 2-x/Cu/sub 3/O/sub 7/superconductor in low oxygen partial pressure | |
| Yuan et al. | Microstructure and J/sub c/improvements in overpressure processed Ag-sheathed Bi-2223 tapes | |
| Zhang et al. | Optimization of a Novel Melt-Growth Heat Treatment of YbBa 2 Cu 3 O 7-δ/Ag Tapes | |
| CN116259442A (en) | Method for improving current carrying capacity of second-generation superconducting tape in strong magnetic field environment | |
| CN104264132A (en) | Single buffer layer of coated conductor and preparation method of single buffer layer | |
| Lu et al. | Effect of MgO and Ag2O Mix-Additions on the Formation and Superconducting Properties of Bi-2223 Phase |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Shudong Inventor after: Gan Xinshi Inventor after: Chen Yimin Inventor after: Zhang Guodong Inventor after: Jiang Ping Inventor before: Gan Xinshi Inventor before: Zhang Shudong Inventor before: Chen Yimin Inventor before: Zhang Guodong Inventor before: Jiang Ping |
|
| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160921 Address after: 110819 Heping Road, Heping District, Liaoning, Shenyang, Lane 11, No. three Applicant after: Northeastern University Applicant after: Suzhou Advanced Materials Research Istitute Co., Ltd. Address before: 215021 Jiangsu Province, Suzhou City Industrial Park BioBAY Xinghu Street No. 218 building C18 Applicant before: Suzhou Advanced Materials Research Istitute Co., Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160525 |