CN104790036A - Method for infiltration growth of nanometer composite yttrium-barium-copper-oxygen superconducting block by using ytterbium-based liquid phase source - Google Patents

Method for infiltration growth of nanometer composite yttrium-barium-copper-oxygen superconducting block by using ytterbium-based liquid phase source Download PDF

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CN104790036A
CN104790036A CN201510091849.9A CN201510091849A CN104790036A CN 104790036 A CN104790036 A CN 104790036A CN 201510091849 A CN201510091849 A CN 201510091849A CN 104790036 A CN104790036 A CN 104790036A
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CN104790036B (en
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李国政
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Tianjin Normal University
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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
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    • 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

Abstract

The present invention discloses a method for infiltration growth of a nanometer composite yttrium-barium-copper-oxygen superconducting block by using a ytterbium-based liquid phase source, wherein the method comprises solid phase powder preparing, liquid phase source powder preparing, precursor block pressing, precursor block assembling, infiltration growth of a nanometer composite yttrium-barium-copper-oxygen single domain block, and oxygen permeation treatment. According to the present invention, the mixture of the Y2O3 nanometer powder, the BaCuO2 precursor powder and the CeO2 initial powder is adopted as the solid phase powder and the high temperature infiltration and the slow cooling growth are performed, such that the nano-scale Y2BaCuO5 particles are successfully introduced into the yttrium-barium-copper-oxygen superconducting block so as to obtain the high superconducting performance; the mixture of the Yb2BaCuO5 precursor powder, the BaO and the CuO initial powder is adopted as the ytterbium-based liquid phase source powder to press the liquid phase source block so as to stably support the solid phase block and supply the liquid phase for the growth of the yttrium-barium-copper-oxygen block to the maximal degree; and the method of the present invention can further be used for preparation of Nd, Sm, Gd and other series of the nanometer composite superconducting blocks.

Description

By the method for ytterbium base liquid phase source infiltration growing nano compound preparing YBCO superconducting blocks
Technical field
The invention belongs to high temperature cuprate superconductor field of material technology, be specifically related to a kind of method of ytterbium base liquid phase source infiltration growing nano compound preparing YBCO superconducting blocks.
Background technology
Top seed crystal technology is utilized to guide the single domain RE-Ba-Cu-O(REBCO of growth, RE=Y, Gd, Sm, Nd etc.) high-temperature superconducting block, efficiently solve " Weak link " phenomenon that in Polycrystalline and multidomain sample, grain boundaries exists, higher body critical current can be carried, show higher trapped flux and magnetic levitation performance, have broad application prospects in miniature superconducting magnet, superconduction electricmachine, magnetic suspension bearing, accumulated energy flywheel and magnetic suspension train etc.
By doping RE 2baCuO 5front axle shell is at REBa 2cu 3o 7 δthe tiny RE of Dispersed precipitate is introduced in superconduction matrix 2baCuO 5particle can significantly improve the flux pinning ability of REBCO superconductive block.Under low field condition, the critical current density J of sample cwith V f211/ d 211be directly proportional (V f211for RE 2baCuO 5particle is at REBa 2cu 3o 7 δthe volume fraction accounted in superconduction matrix, d 211for RE 2baCuO 5the median size of particle).Therefore, to obtain higher J c, RE must be reduced further 2baCuO 5the size of particle, and make it be uniformly distributed.People once attempted nano level RE for this reason 2baCuO 5front axle shell is doped in REBCO superconductive block, but due to REBa 2cu 3o 7 δthe growth solidification process of crystal slowly, RE 2baCuO 5particle is being rich in RE 3+ba-Cu-O liquid phase in can experience serious Ostwald alligatoring growth process, the RE of final sample IT 2baCuO 5the median size of particle still increases between submicron to 1 micron, cannot play the most effective flux pinning effect.If do not have enough strong magnetic flux pinning center in superconductor, its without hindrance current capacity will be restricted, thus cause the trapped flux of sample and magnetic levitation performance on the low side, do not reach the technical indicator needed for practical application.And the flux creep that lower flux pinning force also cannot stop high-temperature superconductor to produce because of hot activation when liquid nitrogen temperature (77K) works, thus occur that trapped flux and magnetic suspension force are decayed serious problem in time.The existence of these problems has had a strong impact on practical value and the practicalization thereof of such material.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of can introduce nano level pinning center in superconduction matrix thus ensure sample superconductivity, by the method for ytterbium base liquid phase source infiltration growing nano compound preparing YBCO superconducting blocks.
Solve the problems of the technologies described above adopted technical scheme to be made up of following step:
(1) solid phase powder is prepared:
By initial to BaO, CuO powder in molar ratio for the ratio of 1:1 mixes, make BaCuO with solid reaction process 2front axle shell; Again by the Y of median size 50nm 2o 3nano powder and BaCuO 2front axle shell be in molar ratio 1:1 ratio mixing, add 0.5% ~ 1.5%(w/w simultaneously) CeO 2initial powder, mixes, as solid phase powder;
CeO in said ratio 2initial powder directly adds in solid phase powder, plays and suppress Y in infiltration process of growth 2baCuO 5nanoparticle alligatoring is grown up, refinement Y 2baCuO 5the effect of granularity, ensure that the successful preparation of nano combined preparing YBCO superconducting blocks;
(2) liquid phase source powder is prepared:
By Yb 2o 3with the initial powder of BaO, CuO in molar ratio for the ratio of 1:1:1 mixes, make Yb with solid reaction process 2baCuO 5front axle shell; Again by Yb 2baCuO 5front axle shell and the initial powder of BaO, CuO are in molar ratio for the ratio of 1:9:15 mixes, as liquid phase source powder;
(3) predecessor block is suppressed:
Get solid phase powder and put into cylinder shape mould 1, be pressed into solid phase block; Get liquid phase source powder and put into cylinder shape mould 2, be pressed into liquid phase source block; Wherein the mass ratio of solid phase powder used and liquid phase source powder is 1:2.5 ~ 3.5, and the diameter of cylinder shape mould 2 is 10mm larger than cylinder shape mould 1; Get Yb again 2baCuO 5front axle shell puts into cylinder shape mould 2, is pressed into the thin slice of thick about 2mm, as back-up block;
(4) predecessor block is assembled:
Liquid phase source block, solid phase block are coaxially placed on directly over back-up block from bottom to top successively, then one piece of Nd-Ba-Cu oxygen seed crystal is placed in the upper surface central position of solid phase block, complete the assembling of predecessor block;
(5) infiltration growing nano compound yttrium barium copper oxide single domain bulk:
The predecessor block assembled is placed on Al 2o 3on pad, middle interval is with 5 contour MgO single die, and then entirety puts into pit furnace, is warming up to 800 ~ 900 DEG C with the temperature rise rate of 300 DEG C per hour, is incubated 5 ~ 15 hours; Be warming up to 1030 ~ 1040 DEG C with the temperature rise rate of 60 DEG C per hour again, be incubated 0.5 ~ 1.5 hour; Then be cooled to 1000 ~ 1010 DEG C with the rate of temperature fall of 60 DEG C per hour, then with rate of temperature fall slow cooling to 970 ~ 980 DEG C of 0.2 ~ 0.5 DEG C per hour, naturally cool to room temperature with stove, obtain nano combined yttrium barium copper oxide single domain bulk;
(6) oxygen process is oozed:
Nano combined yttrium barium copper oxide single domain bulk is put into quartz tube furnace, and in circulation oxygen atmosphere, in the warm area of 450 ~ 400 DEG C, slow cooling 200 hours, obtains nano combined preparing YBCO superconducting blocks.
In preparation solid phase powder step (1) of the present invention, by the Y of median size 50nm 2o 3nano powder and BaCuO 2front axle shell is the ratio mixing of 1:1 in molar ratio, best adds 1%(w/w) CeO 2initial powder; Drive in block step (3) before compaction, the optimum quality ratio of solid phase powder used and liquid phase source powder is 1:3; In infiltration growing nano compound yttrium barium copper oxide single domain bulk step (5), the best is warming up to 850 DEG C with the temperature rise rate of 300 DEG C per hour, is incubated 10 hours; Be warming up to 1035 DEG C with the temperature rise rate of 60 DEG C per hour again, be incubated 1 hour; Then be cooled to 1005 DEG C with the rate of temperature fall of 60 DEG C per hour, then with the rate of temperature fall slow cooling to 975 DEG C of 0.33 DEG C per hour, naturally cool to room temperature with stove, obtain nano combined yttrium barium copper oxide single domain bulk.
The present invention adopts top seed crystal infiltration growth (TSIG) method, by using Y 2o 3nano powder and BaCuO 2front axle shell, CeO 2the mixture of initial powder serves as solid phase powder, after high temperature infiltration and slow cooling growth, in preparing YBCO superconducting blocks, successfully introduces nano level Y 2baCuO 5particle, obtains higher superconductivity.Have employed Yb 2baCuO 5the mixture of front axle shell and the initial powder of BaO, CuO serves as ytterbium base liquid phase source powder and suppresses liquid phase source block, stably can support the solid phase block on it, can be farthest again the growth supply liquid phase of yttrium, barium, copper and oxygen block.The present invention also can be used for the nano combined superconductive block preparing other series such as Nd, Sm, Gd.
Accompanying drawing illustrates:
Fig. 1 is the schematic diagram of the assembling predecessor block of embodiment 1; Wherein 1 is liquid phase source block, and 2 is solid phase block, and 3 is back-up block, and 4 is Nd-Ba-Cu oxygen seed crystal;
Fig. 2 is the surface topography map of nano combined preparing YBCO superconducting blocks prepared by embodiment 1;
Fig. 3 is the magnetic suspension force curve of nano combined preparing YBCO superconducting blocks prepared by embodiment 1;
Fig. 4 is the micro-structure diagram of nano combined preparing YBCO superconducting blocks prepared by embodiment 1.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in more detail, but the invention is not restricted to these embodiments.Wherein used nanometer Y 2o 3(median size 50nm), Yb 2o 3, CeO 2, BaO and CuO chemical feedstocks all has commercially available.
Embodiment 1
(1) solid phase powder is prepared:
Get 65.8415g BaO to mix with the initial powder of 34.1585g CuO, namely the mol ratio of the initial powder of BaO and CuO is 1:1, makes BaCuO with solid reaction process 2front axle shell; Get 39.3842g Y again 2o 3nano powder (median size 50nm) and 40.6158g BaCuO 2front axle shell mixes, and adds 0.8g CeO simultaneously 2initial powder, i.e. Y 2o 3nano powder and BaCuO 2the mol ratio of front axle shell is 1:1, adds 1%(w/w simultaneously) CeO 2initial powder, mixes, as solid phase powder;
(2) liquid phase source powder is prepared:
Get 62.8564g Yb 2o 3mix with the initial powder of 24.4559g BaO, 12.6877g CuO, i.e. Yb 2o 3be 1:1:1 with the mol ratio of the initial powder of BaO, CuO, make Yb with solid reaction process 2baCuO 5front axle shell; Get 15.6734g Yb again 2baCuO 5front axle shell mixes with the initial powder of 34.4977g BaO, 29.8289g CuO, i.e. Yb 2baCuO 5the mol ratio of front axle shell and the initial powder of BaO, CuO is 1:9:15, as liquid phase source powder;
(3) predecessor block is suppressed:
Get 5g solid phase powder and put into cylinder shape mould 1(diameter 16mm), be pressed into solid phase block; Get 15g liquid phase source powder and put into cylinder shape mould 2(diameter 26mm), be pressed into liquid phase source block; Namely the mass ratio of solid phase powder used and liquid phase source powder is 1:3, and the diameter of cylinder shape mould 2 is 10mm larger than cylinder shape mould 1; Get 3g Yb again 2baCuO 5front axle shell puts into cylinder shape mould 2(diameter 26mm), be pressed into the thin slice of thick about 2mm, as back-up block;
(4) predecessor block is assembled:
As shown in Figure 1, in FIG, liquid phase source block 1, solid phase block 2 are coaxially placed on directly over back-up block 3 from bottom to top successively, then one piece of Nd-Ba-Cu oxygen seed crystal 4 is placed in the upper surface central position of solid phase block 2, complete the assembling of predecessor block;
(5) infiltration growing nano compound yttrium barium copper oxide single domain bulk:
The predecessor block assembled is placed on Al 2o 3on pad, middle interval is with 5 contour MgO single die, and then entirety puts into pit furnace, is warming up to 850 DEG C with the temperature rise rate of 300 DEG C per hour, is incubated 10 hours; Be warming up to 1035 DEG C with the temperature rise rate of 60 DEG C per hour again, be incubated 1 hour; Then be cooled to 1005 DEG C with the rate of temperature fall of 60 DEG C per hour, then with the rate of temperature fall slow cooling to 975 DEG C of 0.33 DEG C per hour, naturally cool to room temperature with stove, obtain the nano combined yttrium barium copper oxide single domain bulk of diameter 16mm;
(6) oxygen process is oozed:
Nano combined yttrium barium copper oxide single domain bulk is put into quartz tube furnace, and in circulation oxygen atmosphere, in the warm area of 450 ~ 400 DEG C, slow cooling 200 hours, obtains nano combined preparing YBCO superconducting blocks.
Prepared nano combined preparing YBCO superconducting blocks, take surface topography with photographic camera, photo as shown in Figure 2.As seen from the figure, sample surfaces four footpath is clear, and without sporadic nucleation phenomenon, interpret sample successful growth is the superconductive block of single crystal domains.
Applying three-dimensional magnetic field and magnetic force test set carry out levitation force test to the nano combined preparing YBCO superconducting blocks prepared, and result as shown in Figure 3.As seen from the figure, the maximum magnetic flux suspending power of sample is 28.5321N, and corresponding magnetic suspension force density is 14.1907N/cm 2, interpret sample has superior superconductivity.
At next little wafer of marginal position cleavage of nano combined preparing YBCO superconducting blocks, utilize scanning electronic microscope to carry out Micro-Structure Analysis to it, result as shown in Figure 4.As seen from the figure, in superconduction matrix, Dispersed precipitate a large amount of nano level Y 2baCuO 5particle (median size is about 50nm), illustrates that nano level magnetic flux pinning center has been successfully introduced in preparing YBCO superconducting blocks.
Embodiment 2
In preparation solid phase powder step (1), preparation BaCuO 2the raw material that front axle shell is used and preparation method identical with embodiment 1, then get 39.3842g Y 2o 3nano powder (median size 50nm) and 40.6158g BaCuO 2front axle shell mixes, and adds 0.4g CeO simultaneously 2initial powder, i.e. Y 2o 3nano powder and BaCuO 2the mol ratio of front axle shell is 1:1, adds 0.5%(w/w simultaneously) CeO 2initial powder, mixes, as solid phase powder.
Drive before compaction in block step (3), get 5g solid phase powder and put into cylinder shape mould 1(diameter 16mm), be pressed into solid phase block; Get 12.5g liquid phase source powder and put into cylinder shape mould 2(diameter 26mm), be pressed into liquid phase source block; Namely the mass ratio of solid phase powder used and liquid phase source powder is 1:2.5, and the diameter of cylinder shape mould 2 is 10mm larger than cylinder shape mould 1; Get 3g Yb again 2baCuO 5front axle shell puts into cylinder shape mould 2(diameter 26mm), be pressed into the thin slice of thick about 2mm, as back-up block.
In infiltration growing nano compound yttrium barium copper oxide single domain bulk step (5), the predecessor block assembled is placed on Al 2o 3on pad, middle interval is with 5 contour MgO single die, and then entirety puts into pit furnace, is warming up to 800 DEG C with the temperature rise rate of 300 DEG C per hour, is incubated 15 hours; Be warming up to 1030 DEG C with the temperature rise rate of 60 DEG C per hour again, be incubated 1.5 hours; Then be cooled to 1000 DEG C with the rate of temperature fall of 60 DEG C per hour, then with the rate of temperature fall slow cooling to 970 DEG C of 0.5 DEG C per hour, naturally cool to room temperature with stove, obtain the nano combined yttrium barium copper oxide single domain bulk of diameter 16mm.
Other steps are identical with embodiment 1.Prepare nano combined preparing YBCO superconducting blocks.
Embodiment 3
In preparation solid phase powder step (1), preparation BaCuO 2the raw material that front axle shell is used and preparation method identical with embodiment 1, then get 39.3842g Y 2o 3nano powder (median size 50nm) and 40.6158g BaCuO 2front axle shell mixes, and adds 1.2g CeO simultaneously 2initial powder, i.e. Y 2o 3nano powder and BaCuO 2the mol ratio of front axle shell is 1:1, adds 1.5%(w/w simultaneously) CeO 2initial powder, mixes, as solid phase powder.
Drive before compaction in block step (3), get 5g solid phase powder and put into cylinder shape mould 1(diameter 16mm), be pressed into solid phase block; Get 17.5g liquid phase source powder and put into cylinder shape mould 2(diameter 26mm), be pressed into liquid phase source block; Namely the mass ratio of solid phase powder used and liquid phase source powder is 1:3.5, and the diameter of cylinder shape mould 2 is 10mm larger than cylinder shape mould 1; Get 3g Yb again 2baCuO 5front axle shell puts into cylinder shape mould 2(diameter 26mm), be pressed into the thin slice of thick about 2mm, as back-up block.
In infiltration growing nano compound yttrium barium copper oxide single domain bulk step (5), the predecessor block assembled is placed on Al 2o 3on pad, middle interval is with 5 contour MgO single die, and then entirety puts into pit furnace, is warming up to 900 DEG C with the temperature rise rate of 300 DEG C per hour, is incubated 5 hours; Be warming up to 1040 DEG C with the temperature rise rate of 60 DEG C per hour again, be incubated 0.5 hour; Then be cooled to 1010 DEG C with the rate of temperature fall of 60 DEG C per hour, then with the rate of temperature fall slow cooling to 980 DEG C of 0.25 DEG C per hour, naturally cool to room temperature with stove, obtain the nano combined yttrium barium copper oxide single domain bulk of diameter 16mm.
Other steps are identical with embodiment 1.Prepare nano combined preparing YBCO superconducting blocks.
Embodiment 4
Drive before compaction in block step (3), get 10g solid phase powder and put into cylinder shape mould 1(diameter 26mm), be pressed into solid phase block; Get 30g liquid phase source powder and put into cylinder shape mould 2(diameter 36mm), be pressed into liquid phase source block; Namely the mass ratio of solid phase powder used and liquid phase source powder is 1:3, and the diameter of cylinder shape mould 2 is 10mm larger than cylinder shape mould 1; Get 4.5g Yb again 2baCuO 5front axle shell puts into cylinder shape mould 2(diameter 36mm), be pressed into the thin slice of thick about 2mm, as back-up block.
In infiltration growing nano compound yttrium barium copper oxide single domain bulk step (5), the predecessor block assembled is placed on Al 2o 3on pad, middle interval is with 5 contour MgO single die, and then entirety puts into pit furnace, is warming up to 850 DEG C with the temperature rise rate of 300 DEG C per hour, is incubated 10 hours; Be warming up to 1035 DEG C with the temperature rise rate of 60 DEG C per hour again, be incubated 1.5 hours; Then be cooled to 1005 DEG C with the rate of temperature fall of 60 DEG C per hour, then with the rate of temperature fall slow cooling to 975 DEG C of 0.2 DEG C per hour, naturally cool to room temperature with stove, obtain the nano combined yttrium barium copper oxide single domain bulk of diameter 26mm.
Other steps are identical with embodiment 1.Prepare nano combined preparing YBCO superconducting blocks.
Embodiment 5 simultaneous test
Customary preparation methods: with Y 2baCuO 5for solid phase powder, with Y 2o 3with BaCuO 2, CuO mixture be liquid phase source powder, use Yb 2o 3compacting back-up block;
Preparation method of the present invention: with Y 2o 3nano powder and BaCuO 2, CeO 2mixture be solid phase powder, with Yb 2baCuO 5be liquid phase source powder with the mixture of BaO, CuO, use Yb 2baCuO 5compacting back-up block;
Conclusion:
(1) the present invention can introduce nano level Y in superconduction matrix 2baCuO 5particle;
(2) the preparing YBCO superconducting blocks performance prepared of the present invention is more superior.

Claims (2)

1., by a method for ytterbium base liquid phase source infiltration growing nano compound preparing YBCO superconducting blocks, it is characterized in that it is made up of following step:
(1) solid phase powder is prepared:
By initial to BaO, CuO powder in molar ratio for the ratio of 1:1 mixes, make BaCuO with solid reaction process 2front axle shell; Again by the Y of median size 50nm 2o 3nano powder and BaCuO 2front axle shell is the ratio mixing of 1:1 in molar ratio, adds the CeO of 0.5% ~ 1.5% (w/w) simultaneously 2initial powder, mixes, as solid phase powder;
(2) liquid phase source powder is prepared:
By Yb 2o 3with the initial powder of BaO, CuO in molar ratio for the ratio of 1:1:1 mixes, make Yb with solid reaction process 2baCuO 5front axle shell; Again by Yb 2baCuO 5front axle shell and the initial powder of BaO, CuO are in molar ratio for the ratio of 1:9:15 mixes, as liquid phase source powder;
(3) predecessor block is suppressed:
Get solid phase powder and put into cylinder shape mould 1, be pressed into solid phase block; Get liquid phase source powder and put into cylinder shape mould 2, be pressed into liquid phase source block; Wherein the mass ratio of solid phase powder used and liquid phase source powder is 1:2.5 ~ 3.5, and the diameter of cylinder shape mould 2 is 10mm larger than cylinder shape mould 1; Get Yb again 2baCuO 5front axle shell puts into cylinder shape mould 2, is pressed into the thin slice of thick about 2mm, as back-up block;
(4) predecessor block is assembled:
Liquid phase source block, solid phase block are coaxially placed on directly over back-up block from bottom to top successively, then one piece of Nd-Ba-Cu oxygen seed crystal is placed in the upper surface central position of solid phase block, complete the assembling of predecessor block;
(5) infiltration growing nano compound yttrium barium copper oxide single domain bulk:
The predecessor block assembled is placed on Al 2o 3on pad, middle interval is with 5 contour MgO single die, and then entirety puts into pit furnace, is warming up to 800 ~ 900 DEG C with the temperature rise rate of 300 DEG C per hour, is incubated 5 ~ 15 hours; Be warming up to 1030 ~ 1040 DEG C with the temperature rise rate of 60 DEG C per hour again, be incubated 0.5 ~ 1.5 hour; Then be cooled to 1000 ~ 1010 DEG C with the rate of temperature fall of 60 DEG C per hour, then with rate of temperature fall slow cooling to 970 ~ 980 DEG C of 0.2 ~ 0.5 DEG C per hour, naturally cool to room temperature with stove, obtain nano combined yttrium barium copper oxide single domain bulk;
(6) oxygen process is oozed:
Nano combined yttrium barium copper oxide single domain bulk is put into quartz tube furnace, and in circulation oxygen atmosphere, in the warm area of 450 ~ 400 DEG C, slow cooling 200 hours, obtains nano combined preparing YBCO superconducting blocks.
2. the method for ytterbium base liquid phase source infiltration growing nano compound preparing YBCO superconducting blocks according to claim 1, is characterized in that: in preparation solid phase powder step (1), by the Y of median size 50nm 2o 3nano powder and BaCuO 2front axle shell be in molar ratio 1:1 ratio mixing, add 1%(w/w simultaneously) CeO 2initial powder, mixes, as solid phase powder; Drive in block step (3) before compaction, the mass ratio of solid phase powder used and liquid phase source powder is 1:3; In infiltration growing nano compound yttrium barium copper oxide single domain bulk step (5), the predecessor block assembled is placed on Al 2o 3on pad, middle interval is with 5 contour MgO single die, and then entirety puts into pit furnace, is warming up to 850 DEG C with the temperature rise rate of 300 DEG C per hour, is incubated 10 hours; Be warming up to 1035 DEG C with the temperature rise rate of 60 DEG C per hour again, be incubated 1 hour; Then be cooled to 1005 DEG C with the rate of temperature fall of 60 DEG C per hour, then with the rate of temperature fall slow cooling to 975 DEG C of 0.33 DEG C per hour, naturally cool to room temperature with stove, obtain nano combined yttrium barium copper oxide single domain bulk.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113818071A (en) * 2021-10-25 2021-12-21 天津师范大学 Method for preventing top seed crystal from moving in growth process of nano composite yttrium barium copper oxide superconducting block

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6046139A (en) * 1997-08-08 2000-04-04 The Boeing Company Making large, single crystal, 123 YBCO superconductors
CN101665980A (en) * 2009-09-25 2010-03-10 陕西师范大学 Infiltration method for preparing single-domain Gd-Ba-Cu-O superconducting block
CN102534787A (en) * 2012-02-28 2012-07-04 陕西师范大学 Preparation method of single domain yttrium barium copper oxide superconductor
CN102925954A (en) * 2012-11-29 2013-02-13 陕西师范大学 Method for preparing single domain yttrium barium copper oxide superconduction block
CN102942359A (en) * 2012-11-29 2013-02-27 陕西师范大学 Preparation method of single domain GdBaCuO superconductor block
CN103979951A (en) * 2014-05-22 2014-08-13 天津师范大学 Method for preparing single-domain yttrium barium copper oxide bulk superconductor by taking Y2BaCuO5 as base material
CN104313691A (en) * 2014-10-13 2015-01-28 天津师范大学 Method for preparing single domain (Gd/Y)-Ba-Cu-O superconductivity block

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6046139A (en) * 1997-08-08 2000-04-04 The Boeing Company Making large, single crystal, 123 YBCO superconductors
CN101665980A (en) * 2009-09-25 2010-03-10 陕西师范大学 Infiltration method for preparing single-domain Gd-Ba-Cu-O superconducting block
CN102534787A (en) * 2012-02-28 2012-07-04 陕西师范大学 Preparation method of single domain yttrium barium copper oxide superconductor
CN102925954A (en) * 2012-11-29 2013-02-13 陕西师范大学 Method for preparing single domain yttrium barium copper oxide superconduction block
CN102942359A (en) * 2012-11-29 2013-02-27 陕西师范大学 Preparation method of single domain GdBaCuO superconductor block
CN103979951A (en) * 2014-05-22 2014-08-13 天津师范大学 Method for preparing single-domain yttrium barium copper oxide bulk superconductor by taking Y2BaCuO5 as base material
CN104313691A (en) * 2014-10-13 2015-01-28 天津师范大学 Method for preparing single domain (Gd/Y)-Ba-Cu-O superconductivity block

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
W K YEOH，等: "Control of Y2BaCuO5 particle formation in bulk, single grain Y–Ba–Cu–O", 《SUPERCOND. SCI. TECHNOL.》 *
王高峰: "Y2Ba4CuWOx掺杂对单畴YBCO块材微观结构及超导性能的影响", 《中国优秀硕士学位论文全文数据库 基础科学辑》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113818071A (en) * 2021-10-25 2021-12-21 天津师范大学 Method for preventing top seed crystal from moving in growth process of nano composite yttrium barium copper oxide superconducting block
CN113818071B (en) * 2021-10-25 2024-01-26 天津师范大学 Method for preventing top seed crystal from moving in growth process of nano composite yttrium barium copper oxide superconducting bulk material

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