CN105177712B - A kind of method of growth REBCO high-temperature superconducting blocks - Google Patents
A kind of method of growth REBCO high-temperature superconducting blocks Download PDFInfo
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Abstract
The present invention provides a kind of method of growth REBCO high-temperature superconducting blocks, including following process：A) according to mol ratio Ba：Cu=2：3 prepare Ba2Cu3O5Powder；B) (0.55~0.8) RE is pressed2O3+Ba2Cu3O5+ (0.3~1.5) wt%CeO2Proportioning prepare presoma；C) presoma is placed in growth furnace and REBCO high-temperature superconducting blocks is grown with seed crystal induced fusion texture method；Wherein, the presoma in process b) is the Ba that process a) is obtained2Cu3O5Powder presses (0.55~0.8) RE2O3+Ba2Cu3O5+ (0.3~1.5) wt%CeO2Ratio be well mixed, compacting cylindrical presoma.The present invention is in presoma directly using mol ratio Ba：Cu=2：3 Ba prepared2Cu3O5Powder, and avoid preparing RE123, RE211 powder, time and process costs have been saved, ensure that the proportioning of each element in whole growth course keeps RE123 and RE211 mol ratio to be approximately equal to 1 again：(0.1~0.4), so as to obtain REBCO high-temperature superconducting blocks.
Description
Technical field
The present invention relates to high temperature superconducting materia field, more particularly, to a kind of side of growth REBCO high-temperature superconducting blocks
Method.
Background technology
From REBa2Cu3Ox(abbreviation REBCO, RE123, RE, Ba and Cu oxide, RE=Y, Gd, Sm, Nd etc.) superconductor is found
Since, just cause the extensive concern of people.Because it has perfect diamganetism, high critical current densities and high frozen-in magnetic field etc.
Characteristic, REBCO superconductors have in terms of such as magnetic suspension force, magnetic bearing, flywheel energy storage and permanent magnet it is many potentially should
With.
Top seed crystal infiltration growth method (TSIG) and top seed crystal melt growth method (TSMG) are all to prepare superconducting single crystal block
The common method of material.But in traditional growing method, it would be desirable to prepare Y2BaCuO5(Y211),YBa2Cu3Oy(Y123)
Etc. a variety of powders, process is complicated and wastes time and energy, and the Y211 particle contents in sample are also complied with one's wishes not to the utmost.
At present, top seed crystal melting texture method (MT) can effectively be prepared large-sized REBCO superconduction block materials and easily be made with it
It is standby, a kind of highly doped and the features such as grow reliable, the REBCO high temperature superconducting materias preparation side as great potential can be achieved
Method, but generally will be by a certain amount of RE211 phases of adulterating, this makes in sample, and RE211 particles are big, content is high.
Therefore, those skilled in the art is directed to developing one kind using melting texture method growth REBCO hts bulks
The method of material, compared to prior art, can significantly optimize size and the distribution of RE211 in superconduction block material, so as to improve
The superconductivity of REBCO bulks.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to a kind of method of REBCO high-temperature superconducting blocks is provided,
Melting texture method prepares growth REBCO high-temperature superconducting blocks in air, realizes being uniformly distributed and chi for RE211 in REBCO single domains
Very little refinement, meets the demand of scientific research and the production of actual industrial metaplasia.
The present invention solves the technical scheme that is used of above-mentioned technical problem：
A kind of method of growth REBCO high-temperature superconducting blocks, including following process：
A) according to mol ratio Ba：Cu=2：3 prepare Ba2Cu3O5Powder；
B) (0.55~0.8) RE is pressed2O3+Ba2Cu3O5+ (0.3~1.5) wt%CeO2Proportioning prepare presoma；
C) presoma is placed in growth furnace and REBCO high-temperature superconducting blocks is grown with seed crystal induced fusion texture method；
Wherein, the presoma in process b) is the Ba that process a) is obtained2Cu3O5Powder presses (0.55~0.8) RE2O3+
Ba2Cu3O5+ (0.3~1.5) wt%CeO2Ratio be well mixed, compacting cylindrical presoma.Specifically, presoma
Middle RE2O3And Ba2Cu3O5Mol ratio be (0.55~0.8):1, CeO2For RE2O3And Ba2Cu3O5The 0.3 of the gross mass of powder~
1.5%；
Further, in process c), the seed crystal is placed in the upper surface center of presoma, with top seed crystal melting texture
Grow REBCO high-temperature superconducting blocks.
Preferably, the seed crystal is pressed into cylindrical presoma, and process c) using embedded seed-grain method, the seed
Crystalline substance is with embedded seed-grain method melting texture growing REBCO high-temperature superconducting blocks.
Wherein, embedded seed-grain method is pressed into cylindrical presoma and referred to：By Ba2Cu3O5Powder presses (0.55~0.8)
RE2O3+Ba2Cu3O5+ (0.3~1.5) wt%CeO2Proportioning be well mixed, it is re-compacted formed cylinder presoma, and pressure
During system, seed crystal level is fixedly embedded to the inside in the presoma upper face center region, the induction life of the seed crystal
Long face is located at the inside of the presoma, and the back side and the upper surface of the presoma in the induced growth face are coplanar, is formed
The embedded seed crystal presoma.
Further, process a) includes：First step, according to Ba：Cu=2：3 molar ratio is by BaCO3With CuO powder
Mixing, obtains BaCO3+ CuO powders；Second step, to the BaCO3+ CuO powders are added after absolute ethyl alcohol is well mixed and carried out
Wet-milling, to obtain BaCO3+ CuO slurries, the wet-milling time is 2-4 hours；Third step, the BaCO obtained by drying previous step3+
CuO slurries prepare Ba2Cu3O5Powder；Four steps, by above-mentioned steps Ba2Cu3O5Powder is sintered 48 hours for 900 DEG C in atmosphere
And grinding, sintering process are repeated twice, finally obtain Ba2Cu3O5Powder.
Further, process c) melting texture growing comprises the following steps：Make the temperature in growth furnace in the very first time
Inside rise to the first temperature；Insulation 2~5 hours；The temperature in growth furnace is set to be down to second temperature within the second time；Make growth furnace
Interior temperature is down to the 3rd temperature within the 3rd time；Finally quench, obtain REBCO high-temperature superconducting blocks.
Further, the very first time is 3~10 hours, and the first temperature is higher than the peritectic reaction of REBCO high-temperature superconducting blocks
30~80 DEG C of temperature；Second time was 15~30 minutes, and second temperature is peritectic reaction temperature；3rd time was 10~50 small
When, the 3rd temperature is less than 5~20 DEG C of peritectic reaction temperature.
Further, quench and be：By REBCO high-temperature superconducting block furnace coolings.
Further, process c) seed crystal is NdBCO/YBCO/MgO thin film seeds.
Further, NdBCO/YBCO/MgO thin film seeds are orientated for c-axis, the size of NdBCO/YBCO/MgO thin film seeds
For 2mm × 2mm.
Further, a diameter of 15~30mm of presoma.
Further, REBCO is YBCO, NdBCO, SmBCO or GdBCO.
Beneficial effects of the present invention are as follows：
1st, present invention introduces the NdBCO/YBCO/MgO films of c-axis orientation as seed crystal, embedded seed crystal melting texture method
Induced growth REBCO high-temperature superconducting blocks, the thin film seed has very high heat endurance, and its fusing point is up to 1120 DEG C, favorably
In the integrality for ensureing membrane structure and component in the growth furnace in high-temperature, for successfully inducing the extension of REBCO materials to give birth to
It is long.
2nd, the present invention directly uses mol ratio Ba in presoma：Cu=2：3 Ba prepared2Cu3O5Powder, and avoid system
Standby RE123, RE211 powder, has been saved time and process costs, and each element proportioning in whole growth course is ensure that again
RE123 and RE211 mol ratio is kept to be approximately equal to 1：(0.1~0.4), so as to obtain REBCO high-temperature superconducting blocks.
3rd, the present invention uses the dense of the rare earth element in the presoma under embedded seed-grain method, raising high temperature fused state
Degree, so as to effectively suppress the dissolving and diffusion of the rare earth element in thin film seed, and then ensures structure of the film in the condition of high temperature
Completely, the heat endurance of film is improved.In addition, being shown experimentally that, inventor has found to prepare originally when using embedded seed-grain method
The yield of product is higher during the REBCO high-temperature superconducting blocks of invention.
The technique effect of the design of the present invention, concrete structure and generation is described further below with reference to accompanying drawing, with
It is fully understood from the purpose of the present invention, feature and effect.
Brief description of the drawings
Fig. 1 is shown as the flow chart of the method for the REBCO high-temperature superconducting blocks that the present invention is provided.
Fig. 2 is shown as the schematic diagram of the temperature program(me) of the Melt-Textured Growth Process of embodiments of the invention one.
Fig. 3 is shown as the optical photograph of the YBCO high-temperature superconducting blocks obtained in embodiments of the invention one.
Component label instructions
S10~S30 steps
Embodiment
Illustrate embodiments of the present invention below by way of specific instantiation, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through specific realities different in addition
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.
The present invention provides a kind of method of growth REBCO high-temperature superconducting blocks, as shown in figure 1, including following process：
S10：According to mol ratio Ba：Cu=2：3 prepare Ba2Cu3O5Powder.
S20：By (0.55~0.8) RE2O3+Ba2Cu3O5+ (0.3~1.5) wt%CeO2Proportioning prepare presoma；Its
In, RE2O3And CeO2To be commercially available, purity is 99.99%.
S30：The presoma is placed in growth furnace REBCO hts bulks are grown with seed crystal induced fusion texture method
Material.
Wherein, presoma is the Ba obtained2Cu3O5Powder presses (0.55~0.8) RE2O3+Ba2Cu3O5+ (0.3~1.5)
Wt%CeO2Ratio be well mixed, compacting cylindrical presoma.Specifically, RE in presoma2O3And Ba2Cu3O5's
Mol ratio substantially (0.55~0.8):1, CeO2For RE2O3And Ba2Cu3O5The 0.3~1.5% of the gross mass of powder.
In addition, Ba2Cu3O5Powder is made by grinding, sintering repeatedly, alternatively, including following process：First step, is pressed
According to Ba：Cu=2：3 molar ratio is by BaCO3With the mixing of CuO powder, BaCO is obtained3+ CuO powders；Second step, to described
BaCO3+ CuO powders add after absolute ethyl alcohol is well mixed and carry out wet-milling, to obtain BaCO3+ CuO slurries, the wet-milling time is 2-4
Hour；Third step, the BaCO obtained by drying previous step3+ CuO slurries prepare Ba2Cu3O5Powder；Four steps, will be above-mentioned
Step Ba2Cu3O5Powder sinters 48 hours in atmosphere and is repeated twice grinding, sintering process for 900 DEG C, finally obtains Ba2Cu3O5
Powder.
Thus, by directly using mol ratio Ba in presoma：Cu=2：3 Ba prepared2Cu3O5Powder, and avoid system
Standby RE123, RE211 powder, has been saved time and process costs, and each element proportioning in whole growth course is ensure that again
RE123 and RE211 mol ratio is kept to be approximately equal to 1：(0.1~0.4), so as to obtain REBCO high-temperature superconducting blocks.
Further, seed crystal is placed in the upper surface center of presoma in S30, is melted with top seed crystal or embedded seed crystal
Texture growing REBCO high-temperature superconducting blocks.Wherein, embedded seed-grain method is pressed into cylindrical presoma and referred to：By Ba2Cu3O5Powder
Press (0.55~0.8) RE in end2O3+Ba2Cu3O5+ (0.3~1.5) wt%CeO2Proportioning be well mixed, it is re-compacted formed cylinder
Presoma, and in pressing process, seed crystal level is fixedly embedded to the inside in the presoma upper face center region, institute
The induced growth face for stating seed crystal is located at the inside of the presoma, and the back side and the presoma in the induced growth face is upper
Surface co-planar, forms the embedded seed crystal presoma.
It is emphasized that the present invention uses embedded seed-grain method, it is possible to increase in the presoma under high temperature fused state
Rare earth element concentration so that effectively suppress thin film seed in rare earth element dissolving and diffusion, and then ensure film exist
The structural integrity of the condition of high temperature, improves the heat endurance of film.In addition, being shown experimentally that, knitted compared to the melting of top seed crystal
Structure growth method, inventor find when using embedded seed-grain method prepare the present invention REBCO high-temperature superconducting blocks when product it is good
Rate is higher.This may be also in that embedded seed-grain method, it is possible to increase the rare earth element in presoma under high temperature fused state
Concentration so that effectively suppress thin film seed in rare earth element dissolving and diffusion, be conducive to presoma melting texture give birth to
Growth process avoids the deviation of component.
Further, S30 melting texture growing comprises the following steps：The temperature in growth furnace is set to be risen within the very first time
To the first temperature；Insulation 2~5 hours；The temperature in growth furnace is set to be down to second temperature within the second time；Make in growth furnace
Temperature is down to the 3rd temperature within the 3rd time；Finally quench, obtain REBCO high-temperature superconducting blocks.Alternatively, the very first time is
3~10 hours, the first temperature was higher than 30~80 DEG C of the peritectic reaction temperature of REBCO high-temperature superconducting blocks；Second time be 15~
30 minutes, second temperature was peritectic reaction temperature；3rd time was 10~50 hours, and the 3rd temperature is less than peritectic reaction temperature
5~20 DEG C.
Further, S30 seed crystal is NdBCO/YBCO/MgO thin film seeds.Wherein, NdBCO/YBCO/MgO films seed
Crystalline substance is c-axis orientation, and the size of NdBCO/YBCO/MgO thin film seeds is preferably cut into 2mm × 2mm.
Present invention introduces the NdBCO/YBCO/MgO films of c-axis orientation as seed crystal, embedded seed crystal melting texture method is lured
Growth REBCO high-temperature superconducting blocks are led, the thin film seed has very high heat endurance, and its fusing point is up to 1120 DEG C, is conducive to
Ensure the integrality of membrane structure and component, the epitaxial growth for successfully inducing REBCO materials in the growth furnace of high-temperature.
Embodiment 1
A kind of method of growth YBCO high-temperature superconducting blocks, including following process：
1st, according to Ba：Cu=2：3 molar ratio is by BaCO3With the mixing of CuO powder, BaCO is obtained3+ CuO powders；
2nd, to BaCO described in step 13+ CuO powders add after absolute ethyl alcohol is well mixed and carry out wet-milling, to obtain BaCO3+
CuO slurries, the wet-milling time is 2-4 hours；
3rd, in baking step 2 gained BaCO3+ CuO slurries prepare Ba2Cu3O5Powder；
4th, by the Ba in step 32Cu3O5Powder in atmosphere 900 DEG C sintering 48 hours and be repeated 2 times this grinding, it is sintered
Journey, finally obtains Ba2Cu3O5Powder.
5th, by step 4 gained Ba2Cu3O5Powder presses 0.75Y2O3+Ba2Cu3O5+ (0.3~1.5) wt%CeO2Proportioning match somebody with somebody
Material, fully mills after being well mixed, and takes 10g to mix powder and is put into mould.
6th, powder described in step 5 is used into embedded seed-grain method, the NdBCO/ that size is orientated for 2mm × 2mm c-axis
The seed crystal material of YBCO/MgO films is pressed into a diameter of 20mm cylindrical presoma, wherein, 2mm × 2mm represents film
The length and width of seed crystal are 2mm.
7th, the seed crystal material in step 6, presoma are positioned over progress melting structure growth in growth furnace, as shown in Fig. 2
The actual temp program of growth furnace is：
A, begin to pass through from room temperature 4h and be warming up to 900 DEG C, be incubated 2h.
2h is heated in b, continuation, is warming up to 1080 DEG C, is incubated 1.5h.
C, in 35min, fast cooling is to 1005 DEG C.
D, 0.5 DEG C/h grow 50h.
YBCO high-temperature superconductor block materials are made in e, quenching.
Fig. 3 is the photo for the YBCO high-temperature superconducting blocks that growth is obtained, and growth time 50h, growth maximum temperature is 1080
℃.It can be seen that using embedded seed-grain method, Y2O3Powder and Ba2Cu3O5Powder is mixed directly as preceding by a certain percentage
Body component is driven, YBCO high-temperature superconducting blocks can be grown using melting texture method.As can be seen that the embedded seed crystal induction
YBCO high-temperature superconducting blocks induce outside growth regularity by seed crystal, form complete one-domain structure.In addition, inventor is to obtained
YBCO high-temperature superconducting blocks induce the section in direction to observe along seed crystal, find being evenly distributed for Y211, away from seed crystal position
Y211 aggregations are not obvious, and Y211 size is smaller.
Embodiment 2
A kind of method of growth NdBCO high-temperature superconducting blocks, including following process：
1st, according to Ba：Cu=2：3 ratio is by BaCO3With the mixing of CuO powder, BaCO is obtained3+ CuO powders；
2nd, to BaCO described in step 13+ CuO powders add after absolute ethyl alcohol is well mixed and carry out wet-milling, to obtain BaCO3+
CuO slurries, the wet-milling time is 2-4 hours；
3rd, in baking step 2 gained BaCO3+ CuO slurries prepare Ba2Cu3O5Powder；
4th, by the Ba in step 32Cu3O5Powder in atmosphere 900 DEG C sintering 48 hours and be repeated 2 times this grinding, it is sintered
Journey, finally obtains Ba2Cu3O5Powder.
5th, by step 4 gained Ba2Cu3O5Powder presses 0.75Nd2O3+Ba2Cu3O5+ (0.3~1.5) wt%CeO2Proportioning match somebody with somebody
Material, fully mills after being well mixed, and takes 10g to mix powder and is put into mould.
6th, powder described in step 5 is used into embedded seed-grain method, the NdBCO/ that size is orientated for 2mm × 2mm c-axis
The seed crystal material of YBCO/MgO films is pressed into a diameter of 20mm cylindrical presoma, wherein, 2mm × 2mm represents film
The length and width of seed crystal are 2mm.
7th, the seed crystal material in step 6, presoma are positioned over progress melting structure growth, the tool of growth furnace in growth furnace
Temperature program is：
A, begin to pass through from room temperature 4h and be warming up to 900 DEG C, be incubated 2h.
2h is heated in b, continuation, is warming up to 1120 DEG C, is incubated 1.5h.
C, in 35min, fast cooling is to 1090 DEG C.
D, 0.2 DEG C/h slow coolings growth 20h, 0.3 DEG C/h slow coolings growth 20h, the growth of 0.4 DEG C/h slow coolings
20h, altogether 60h.
NdBCO high-temperature superconductor block materials are made in e, quenching.
Embodiment 3
A kind of method of growth SmBCO high-temperature superconducting blocks, including following process：
1st, according to Ba：Cu=2：3 ratio is by BaCO3With the mixing of CuO powder, BaCO is obtained3+ CuO powders；
2nd, to BaCO described in step 13+ CuO powders add after absolute ethyl alcohol is well mixed and carry out wet-milling, to obtain BaCO3+
CuO slurries, the wet-milling time is 2-4 hours；
3rd, in baking step 2 gained BaCO3+ CuO slurries prepare Ba2Cu3O5Powder；
4th, by the Ba in step 32Cu3O5Powder in atmosphere 900 DEG C sintering 48 hours and be repeated 2 times this grinding, it is sintered
Journey, finally obtains Ba2Cu3O5Powder.
5th, by step 4 gained Ba2Cu3O5Powder presses 0.75Sm2O3+Ba2Cu3O5+ (0.3~1.5) wt%CeO2Proportioning match somebody with somebody
Material, fully mills after being well mixed, and takes 10g to mix powder and is put into mould.
6th, powder described in step 5 is used into embedded seed-grain method, the NdBCO/ that size is orientated for 2mm × 2mm c-axis
The seed crystal material of YBCO/MgO films is pressed into a diameter of 20mm cylindrical presoma, wherein, 2mm × 2mm represents film
The length and width of seed crystal are 2mm.
7th, the seed crystal material in step 6, presoma are positioned over progress melting structure growth, the tool of growth furnace in growth furnace
Temperature program is：
A, begin to pass through from room temperature 4h and be warming up to 900 DEG C, be incubated 2h.
2h is heated in b, continuation, is warming up to 1110 DEG C, is incubated 1.5h.
C, in 35min, fast cooling is to 1060 DEG C.
D, 0.2 DEG C/h slow coolings growth 20h, 0.3 DEG C/h slow coolings growth 20h, the growth of 0.4 DEG C/h slow coolings
20h, altogether 60h.
SmBCO high-temperature superconductor block materials are made in e, quenching.
Embodiment 4
A kind of method of growth GdBCO high-temperature superconducting blocks, including following process：
1st, according to Ba：Cu=2：3 ratio is by BaCO3With the mixing of CuO powder, BaCO is obtained3+ CuO powders；
2nd, to BaCO described in step 13+ CuO powders add after absolute ethyl alcohol is well mixed and carry out wet-milling, to obtain BaCO3+
CuO slurries, the wet-milling time is 2-4 hours；
3rd, in baking step 2 gained BaCO3+ CuO slurries prepare Ba2Cu3O5Powder；
4th, by the Ba in step 32Cu3O5Powder in atmosphere 900 DEG C sintering 48 hours and be repeated 2 times this grinding, it is sintered
Journey, finally obtains Ba2Cu3O5Powder.
5th, by step 4 gained Ba2Cu3O5Powder presses 0.75Gd2O3+Ba2Cu3O5+ (0.3~1.5) wt%CeO2Proportioning match somebody with somebody
Material, fully mills after being well mixed, and takes 10g to mix powder and is put into mould.
6th, powder described in step 5 is used into embedded seed-grain method, the NdBCO/ that size is orientated for 2mm × 2mm c-axis
The seed crystal material of YBCO/MgO films is pressed into a diameter of 20mm cylindrical presoma, wherein, 2mm × 2mm represents film
The length and width of seed crystal are 2mm.
7th, the seed crystal material in step 6, presoma are positioned over progress melting structure growth, the tool of growth furnace in growth furnace
Temperature program is：
A, begin to pass through from room temperature 4h and be warming up to 900 DEG C, be incubated 2h.
2h is heated in b, continuation, is warming up to 1110 DEG C, is incubated 1.5h.
C, in 35min, fast cooling is to 1040 DEG C.
D, 0.3 DEG C/h slow coolings growth 10h, 0.4 DEG C/h slow coolings growth 15h, the growth of 0.5 DEG C/h slow coolings
20h, altogether 45h.
GdBCO high-temperature superconductor block materials are made in e, quenching.
Preferred embodiment of the invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Need creative work just can make many modifications and variations according to the design of the present invention.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (10)
1. a kind of method of growth REBCO high-temperature superconducting blocks, including following process：
A) according to mol ratio Ba：Cu=2：3 prepare Ba2Cu3O5Powder；
B) (0.55~0.8) RE is pressed2O3+Ba2Cu3O5+ (0.3~1.5) wt%CeO2Proportioning prepare presoma；
C) presoma is placed in growth furnace and REBCO high-temperature superconducting blocks is grown with seed crystal induced fusion texture method；
Wherein, the presoma in process b) is the Ba that process a) is obtained2Cu3O5Powder presses (0.55~0.8) RE2O3+Ba2Cu3O5+
(0.3~1.5) wt%CeO2Ratio be well mixed, compacting cylindrical presoma.
2. the method for growth REBCO high-temperature superconducting blocks according to claim 1, it is characterised in that：The seed crystal is placed in
The upper surface center of presoma, with top seed crystal melting texture growing REBCO high-temperature superconducting blocks.
3. the method for growth REBCO high-temperature superconducting blocks according to claim 1, it is characterised in that：The seed crystal is used
Embedded seed-grain method is pressed into cylindrical presoma, and with embedded seed-grain method melting texture growing REBCO high-temperature superconducting blocks.
4. the method for growth REBCO high-temperature superconducting blocks according to claim 1, it is characterised in that：Process a) includes：The
One step, according to Ba：Cu=2：3 molar ratio is by BaCO3With the mixing of CuO powder, BaCO is obtained3+ CuO powders；Second step
Suddenly, to the BaCO3+ CuO powders add after absolute ethyl alcohol is well mixed and carry out wet-milling, to obtain BaCO3+ CuO slurries, wet-milling
Time is 2-4 hours；Third step, the BaCO obtained by drying previous step3+ CuO slurries prepare Ba2Cu3O5Powder；4th step
Suddenly, by above-mentioned steps Ba2Cu3O5Powder sinters 48 hours in atmosphere and is repeated twice grinding, sintering process for 900 DEG C, finally obtains
Obtain Ba2Cu3O5Powder.
5. the method for growth REBCO high-temperature superconducting blocks according to claim 1, it is characterised in that：Process c) melting
Texture growing comprises the following steps：The temperature in growth furnace is set to rise to the first temperature within the very first time；Insulation 2~5 hours；Make
Temperature in growth furnace is down to second temperature within the second time；The temperature in growth furnace is set to be down to the 3rd temperature within the 3rd time
Degree；Finally quench, obtain REBCO high-temperature superconducting blocks.
6. the method for growth REBCO high-temperature superconducting blocks according to claim 5, it is characterised in that：The very first time be 3~
10 hours, the first temperature was higher than 30~80 DEG C of the peritectic reaction temperature of REBCO high-temperature superconducting blocks；Second time was 15~30 points
Clock, second temperature is peritectic reaction temperature；3rd time be 10~50 hours, the 3rd temperature be less than peritectic reaction temperature 5~
20℃。
7. the method for growth REBCO high-temperature superconducting blocks according to claim 5, it is characterised in that：Quench and be：Will
REBCO high-temperature superconducting block furnace coolings.
8. the method for growth REBCO high-temperature superconducting blocks according to claim 1, it is characterised in that：Process c) seed crystal
It is NdBCO/YBCO/MgO thin film seeds, the NdBCO/YBCO/MgO thin film seeds are orientated for c-axis, NdBCO/YBCO/MgO is thin
The size of film seed crystal is 2mm × 2mm.
9. the method for growth REBCO high-temperature superconducting blocks according to claim 1, it is characterised in that：The diameter of presoma
For 15~30mm.
10. the method for growth REBCO high-temperature superconducting blocks according to claim 1, it is characterised in that：REBCO be YBCO,
NdBCO, SmBCO or GdBCO.
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