CN105390209A - High-temperature superconducting material - Google Patents
High-temperature superconducting material Download PDFInfo
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- CN105390209A CN105390209A CN201510949640.1A CN201510949640A CN105390209A CN 105390209 A CN105390209 A CN 105390209A CN 201510949640 A CN201510949640 A CN 201510949640A CN 105390209 A CN105390209 A CN 105390209A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B12/00—Superconductive or hyperconductive conductors, cables, or transmission lines
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
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Abstract
The invention discloses a high-temperature superconducting material. The preparation method comprises the following steps: (100) milling and reaction: weighing and mixing boron powder and magnesium powder in a molar ratio of 1:1-1.2, putting in a wear-resistant ball milling jar, then putting a ball milling jar in a high-temperature energy ball milling machine and ball milling for 2-3h at a temperature in a range of 150 DEG C to 500 DEG C in an argon protective atmosphere; (200) secondary grinding: adding a small amount of boric oxide powder and metallic silver powder in the mixed powder, mixing and grinding again; (300) block pressing: pouring the mixed powder obtained after secondary grinding into a mold and pressing into a block; and (400) sintering: packing the block in a quartz tube, vacuumizing and sintering in the argon protective atmosphere. The high-temperature superconducting material has the advantages that the preparation process is simplified and the overall performance is improved.
Description
Technical field
The present invention relates to field of material preparation, particularly relate to a kind of high temperature superconducting materia.
Background technology
Superconduction is one of phenomenon the most marvellous in physical world.General superconducting alloy enters superconducting state reducing to zero close to resistance during absolute zero, and high-temperature superconductor then refers to that material is at certain relatively high critical temperature resistor bust to zero, and it has diverse Physical Mechanism and more wide application prospect.1986, physicist found copper oxide high temperature superconductor, and this works in next year and just obtains Nobel Prize in physics.Since then, scientists just never stopped the exploration of new high temperature superconducting materia, and constantly pursuing more while high-critical temperature, physicists are making great efforts announcement mechanism wherein always.At present, Dou You research institution of nearly all developed country is engaged in the research of high-temperature superconductor aspect in the world.On the one hand, the exploration of high-temperature superconductor mechanism is attract to the concern of numerous physicist; On the other hand, due to the energy and other specific demands, industrial quarters is placed high hopes to superconductor technology, but because the critical temperature of general superconducting alloy is close to absolute zero, the reason of refrigeration causes applying facing lots of obstruction, and high-temperature superconductor is then one of following outlet of expecting of everybody.
Since January calendar year 2001, Late Cambrian critical transition temperature was the MgB2 superconductor of 39K, caused extensive concern, started the upsurge of research MgB2 superconductor, various countries scientist has carried out large quantifier elimination to the synthetic method of MgB2 superconduction.Up to the present no matter be bulk or the technology of preparing of film all more complicated, but also not exclusively ripe.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of preparation method of high temperature superconducting materia, can simplify preparation technology, improves overall performance.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of high temperature superconducting materia, its preparation method comprises the following steps:
(100) refinement reacting: by boron powder and magnesium powder in molar ratio for the ratio of 1:1 ~ 1.2 carries out weighing and mixing, put into wear-resistant ball grinding jar, then ball grinder is put into high temperature energy spheroidal graphite machine, under the protection of argon atmosphere, under temperature 150 DEG C ~ 500 DEG C scopes, carry out ball milling 2 ~ 3 hours;
(200) second time grinding: add small amounts boron powder and argent powder in mixed-powder, carry out mixing and grind again;
(300) briquetting: then under the atmosphere of argon gas, pours into the mixed-powder after second time grinding in mould and is pressed into blocks;
(400) sinter: be finally encapsulated in quartz ampoule by block body and vacuumize, under argon atmosphere, sinter, pressure limit is 0.01 ~ 0.02MPa, with the heating rate of 10 DEG C/min, after rising to 600 DEG C ~ 750 DEG C, sinters 5 ~ 8 hours.
In a preferred embodiment of the present invention, described wear-resistant ball grinding jar is that mould steel is made.
In a preferred embodiment of the present invention, the addition of described boron oxide powder and argent powder is 2 ~ 4wt% of principal component.
The invention has the beneficial effects as follows: high temperature superconducting materia of the present invention, can preparation technology be simplified, improve overall performance.
Embodiment
Below preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
A kind of high temperature superconducting materia of the present invention, its preparation method comprises the following steps:
(100) refinement reacting: by boron powder and magnesium powder in molar ratio for the ratio of 1:1 ~ 1.2 carries out weighing and mixing, put into wear-resistant ball grinding jar, then ball grinder is put into high temperature energy spheroidal graphite machine, under the protection of argon atmosphere, under temperature 150 DEG C ~ 500 DEG C scopes, carry out ball milling 2 ~ 3 hours;
(200) second time grinding: add small amounts boron powder and argent powder in mixed-powder, carry out mixing and grind again;
(300) briquetting: then under the atmosphere of argon gas, pours into the mixed-powder after second time grinding in mould and is pressed into blocks;
(400) sinter: be finally encapsulated in quartz ampoule by block body and vacuumize, under argon atmosphere, sinter, pressure limit is 0.01 ~ 0.02MPa, with the heating rate of 10 DEG C/min, after rising to 600 DEG C ~ 750 DEG C, sinters 5 ~ 8 hours.
Embodiment one
The ratio being 1:1.2 in molar ratio by boron powder and magnesium powder carries out weighing and mixing, and puts into wear-resistant ball grinding jar, then ball grinder is put into high temperature energy spheroidal graphite machine, under the protection of argon atmosphere, under temperature 300 DEG C of scopes, carry out ball milling 2.5 hours; In mixed-powder, add 2wt% boron oxide powder and 1wt% argent powder, carry out mixing and grind again; Then, under the atmosphere of argon gas, the mixed-powder after second time grinding is poured in mould and is pressed into blocks; Finally be encapsulated in quartz ampoule by block body and vacuumize, under argon atmosphere, sinter, pressure limit is 0.015MPa, with the heating rate of 10 DEG C/min, after rising to 700 DEG C, sinters 6 hours.
Embodiment two
The ratio being 1:1.1 in molar ratio by boron powder and magnesium powder carries out weighing and mixing, and puts into wear-resistant ball grinding jar, then ball grinder is put into high temperature energy spheroidal graphite machine, under the protection of argon atmosphere, under temperature 350 DEG C of scopes, carry out ball milling 3 hours; In mixed-powder, add 1wt% boron oxide powder and 3wt% argent powder, carry out mixing and grind again; Then, under the atmosphere of argon gas, the mixed-powder after second time grinding is poured in mould and is pressed into blocks; Finally be encapsulated in quartz ampoule by block body and vacuumize, under argon atmosphere, sinter, pressure limit is 0.02MPa, with the heating rate of 10 DEG C/min, after rising to 600 DEG C, sinters 8 hours.
Embodiment three
The ratio being 1:1 in molar ratio by boron powder and magnesium powder carries out weighing and mixing, and puts into wear-resistant ball grinding jar, then ball grinder is put into high temperature energy spheroidal graphite machine, under the protection of argon atmosphere, under temperature 450 DEG C of scopes, carry out ball milling 2 hours; In mixed-powder, add 3wt% boron oxide powder and 0.5wt% argent powder, carry out mixing and grind again; Then, under the atmosphere of argon gas, the mixed-powder after second time grinding is poured in mould and is pressed into blocks; Finally be encapsulated in quartz ampoule by block body and vacuumize, under argon atmosphere, sinter, pressure limit is 0.01MPa, with the heating rate of 10 DEG C/min, after rising to 600 DEG C, sinters 8 hours.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. a high temperature superconducting materia, is characterized in that, its preparation method comprises the following steps:
(100) refinement reacting: by boron powder and magnesium powder in molar ratio for the ratio of 1:1 ~ 1.2 carries out weighing and mixing, put into wear-resistant ball grinding jar, then ball grinder is put into high temperature energy spheroidal graphite machine, under the protection of argon atmosphere, under temperature 150 DEG C ~ 500 DEG C scopes, carry out ball milling 2 ~ 3 hours;
(200) second time grinding: add small amounts boron powder and argent powder in mixed-powder, carry out mixing and grind again;
(300) briquetting: then under the atmosphere of argon gas, pours into the mixed-powder after second time grinding in mould and is pressed into blocks;
(400) sinter: be finally encapsulated in quartz ampoule by block body and vacuumize, under argon atmosphere, sinter, pressure limit is 0.01 ~ 0.02MPa, with the heating rate of 10 DEG C/min, after rising to 600 DEG C ~ 750 DEG C, sinters 5 ~ 8 hours.
2. high temperature superconducting materia according to claim 1, is characterized in that, described wear-resistant ball grinding jar is that mould steel is made.
3. high temperature superconducting materia according to claim 1, is characterized in that, the addition of described boron oxide powder and argent powder is 2 ~ 4wt% of principal component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510949640.1A CN105390209A (en) | 2015-12-18 | 2015-12-18 | High-temperature superconducting material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510949640.1A CN105390209A (en) | 2015-12-18 | 2015-12-18 | High-temperature superconducting material |
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| CN105390209A true CN105390209A (en) | 2016-03-09 |
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| CN201510949640.1A Pending CN105390209A (en) | 2015-12-18 | 2015-12-18 | High-temperature superconducting material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521291A (en) * | 2016-11-04 | 2017-03-22 | 金福兴 | Composite superconductive nanometer block material and preparation method thereof |
| CN108597682A (en) * | 2018-04-20 | 2018-09-28 | 西北有色金属研究院 | A kind of preparation method of high current-carrying Bi-2223 multi-core superconducting bands |
| CN108580882A (en) * | 2018-06-20 | 2018-09-28 | 西安琦丰光电科技有限公司 | A kind of powder ball milling mixing method of molybdenum silicon boron material for increasing material manufacturing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5168127A (en) * | 1987-03-20 | 1992-12-01 | Fujikura Ltd. | Oxide superconducting wire |
| CN1411004A (en) * | 2002-12-03 | 2003-04-16 | 西北有色金属研究院 | Magnesium boride superconducting wire and preparation method thereof |
| CN1619713A (en) * | 2003-10-22 | 2005-05-25 | 通用电气公司 | Superconducting wire, method of manufacture thereof and the articles derived therefrom |
| CN103848626A (en) * | 2014-02-25 | 2014-06-11 | 上海大学 | In-situ preparation method of magnesium borate-magnesium oxide multiphase superconducting material with different superconducting phase contents |
-
2015
- 2015-12-18 CN CN201510949640.1A patent/CN105390209A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5168127A (en) * | 1987-03-20 | 1992-12-01 | Fujikura Ltd. | Oxide superconducting wire |
| CN1411004A (en) * | 2002-12-03 | 2003-04-16 | 西北有色金属研究院 | Magnesium boride superconducting wire and preparation method thereof |
| CN1619713A (en) * | 2003-10-22 | 2005-05-25 | 通用电气公司 | Superconducting wire, method of manufacture thereof and the articles derived therefrom |
| CN103848626A (en) * | 2014-02-25 | 2014-06-11 | 上海大学 | In-situ preparation method of magnesium borate-magnesium oxide multiphase superconducting material with different superconducting phase contents |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521291A (en) * | 2016-11-04 | 2017-03-22 | 金福兴 | Composite superconductive nanometer block material and preparation method thereof |
| CN108597682A (en) * | 2018-04-20 | 2018-09-28 | 西北有色金属研究院 | A kind of preparation method of high current-carrying Bi-2223 multi-core superconducting bands |
| CN108580882A (en) * | 2018-06-20 | 2018-09-28 | 西安琦丰光电科技有限公司 | A kind of powder ball milling mixing method of molybdenum silicon boron material for increasing material manufacturing |
| CN108580882B (en) * | 2018-06-20 | 2019-12-17 | 西安琦丰光电科技有限公司 | powder ball-milling mixing method of molybdenum-silicon-boron material for additive manufacturing |
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Application publication date: 20160309 |