CN1013812B - 用高能量激光合成Y-Ba-Cu-O超导体的方法 - Google Patents
用高能量激光合成Y-Ba-Cu-O超导体的方法Info
- Publication number
- CN1013812B CN1013812B CN87103978A CN87103978A CN1013812B CN 1013812 B CN1013812 B CN 1013812B CN 87103978 A CN87103978 A CN 87103978A CN 87103978 A CN87103978 A CN 87103978A CN 1013812 B CN1013812 B CN 1013812B
- Authority
- CN
- China
- Prior art keywords
- small pieces
- laser
- sample
- laser scanning
- superconductor
- 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.)
- Expired
Links
- 239000002887 superconductor Substances 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000010949 copper Substances 0.000 claims abstract description 10
- 239000010453 quartz Substances 0.000 claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052788 barium Inorganic materials 0.000 claims abstract description 5
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052802 copper Inorganic materials 0.000 claims abstract description 5
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 5
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims abstract description 5
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 12
- 239000003708 ampul Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 7
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 claims description 6
- CSSYLTMKCUORDA-UHFFFAOYSA-N barium(2+);oxygen(2-) Chemical compound [O-2].[Ba+2] CSSYLTMKCUORDA-UHFFFAOYSA-N 0.000 claims description 6
- 229960004643 cupric oxide Drugs 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 claims description 3
- 229910009203 Y-Ba-Cu-O Inorganic materials 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
- 229910000807 Ga alloy Inorganic materials 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000003746 solid phase reaction Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 208000037805 labour Diseases 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Superconductors And Manufacturing Methods Therefor (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
用高能量激光技术合成超导体的方法，将一定比例的钇(Y)、钡(Ba)、铜(Cu)的混合物片子放在石英管中进行激光扫描，从而在短时间内即可制成一个具有超导效应的试样，不但操作方便、节约能量、不受环境污染，而且可获得丝状、片状和薄膜等各种给定尺寸的超导体。
Description
本发明涉及一种用高能量激光合成材料的技术。
一般地，国内外采用高温烧结、固相反应的传统工艺合成超导体（文献（1）赵忠贤、陈立泉等，科学通报，32，6，412～414，1987;（2）Bednorz，J.G.and Muller，K·A·，Z·Phys·B·Condensed Matter，64，189～193，1986），这种方法操作繁琐，周期长，设备费用大，需要付出大量劳动力，不能快速维持试样的高温固相微观结构，只能合成一定尺寸的超导体，特别是使超导薄膜的制备受到限制，不能拓开超导试样形状的要求。欧洲专利公开了（公开号：0202895）一种用高能量激光合成超导体的方法，但是，这种方法所需的装置复杂，所制得的超导体的超导电性和稳定性低。
本发明的目的旨在克服上述现有技术的缺点，将一定比例的钇（Y）、钡（Ba）、铜（Cu）的混合物的片子放在高能量的激光中进行激光扫描，从而在短时间内即可制成一个具有超导效应的试样，不但操作方便、节约能量，而且可获得丝状、片状和薄膜等各种给定尺寸的超导体，具有所制得的超导电性和稳定性高的特点。
本发明是根据以下原理实现的：
激光能量密度大，可获得较快的升温速度，到达指定温度的时间很短，试样在精确可靠的高能量密度激光扫描下，发生均匀可控的固相反应。随着激光的消失，试样立即冷却而趋于稳定，因此可反复进行试样的热处理，使试样成为超导体。
本发明合成超导体的方法如下：
按钇（Y）比钡（Ba）比铜（Cu）为1比2比3的配方分别取相应的干燥氧化物三氧化二钇（Y2O3）、氧化钡（BaO）、氧化铜（CuO），于玛瑙研钵中充分研磨均匀，变成粉体;然后称取一定份额的粉体于压片机上压成片子，将压好的片子切成所需尺寸的小片试样，将小片试样放在石英管中。也可将粉体附着在耐高温的绝缘体上，一起放入石英管中，石英管的上面开有一个能射入激光束的小孔。打开激光器电源，调整激光扫描尺寸，让小片试样处于激光扫描范围内，再向石英管中连续通入一定量的氧气、调整激光激励电流，控制小片试样温度在950±10℃进行激光扫描，约30分钟到1小时后取出试样，涂上铟-镓合金电极，用四引线技术测定小片试样的转变温度和零电阻温度。测定完毕后，将小片试样进行蜡封，以保持样品特性。
由此可见，利用本发明合成超导体，所需装置简单、操作方便，而且试样不受环境污染。
本发明的一个实施例如下：
按钇（Y）比钡（Ba）比铜（Cu）为1比2比3的配方分别称取在130℃烘干的相应的氧化物三氧化二钇（Y2O3）氧化钡（BaO）、氧化铜（CuO），于玛瑙研钵中充分研磨均匀，变成粉体;然后称取每份为1.5克粉体于压片机上压成直径为18毫米的片子，使用的压力为180公斤，将压好的片子切成长10毫米、宽8毫米的小试样放进长200毫米，内径30毫米的石英管中，然后打开激光器电源，调整激光扫描尺寸，让小片试样处于激光扫描范围内，再向石英管中以0.5升/分的流量通入氧气，调整激光激励电流，控制小片试样温度在950±10℃进行激光扫描，三十分钟后取出，该小片试样即具备有超导性能，涂上铟-镓合金电极，用四引线技术测得小片试样的转变温度为122开。
Claims (1)
1、用高能量激光合成Y-Ba-Cu-O超导体的方法，首先按钇(Y)比钡(Ba)比铜(Cu)为1比2比3的配方分别称取相应的干燥氧化物三氧化二钇(Y2O3)、氧化钡(BaO)、氧化铜(CuO)，于玛瑙研钵中充分研磨均匀，变成粉体，然后称取一定份额的粉体于压片机上压成片子，将压好的片子切成所需形状和尺寸的小片试样，切好的小片试样放在一个开有能射入激光束小孔的石英管中，然后打开激光器电源，调整激光扫描尺寸，让小片试样处于激光扫描范围内，再向石英管中连续通入0.5升/分的氧气，将小片试样的温度控制在950±10℃进行激光扫描，激光扫描30分钟到1小时后，将小片试样取出。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87103978A CN1013812B (zh) | 1987-05-31 | 1987-05-31 | 用高能量激光合成Y-Ba-Cu-O超导体的方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87103978A CN1013812B (zh) | 1987-05-31 | 1987-05-31 | 用高能量激光合成Y-Ba-Cu-O超导体的方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87103978A CN87103978A (zh) | 1988-12-21 |
| CN1013812B true CN1013812B (zh) | 1991-09-04 |
Family
ID=4814666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87103978A Expired CN1013812B (zh) | 1987-05-31 | 1987-05-31 | 用高能量激光合成Y-Ba-Cu-O超导体的方法 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1013812B (zh) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100367525C (zh) * | 2001-07-31 | 2008-02-06 | 美国超导体公司 | 用于制造超导体材料的方法、系统和反应器 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101857429A (zh) * | 2010-06-30 | 2010-10-13 | 西南交通大学 | 一种无氟化学溶液沉积制备高温超导涂层导体超导层的方法 |
-
1987
- 1987-05-31 CN CN87103978A patent/CN1013812B/zh not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100367525C (zh) * | 2001-07-31 | 2008-02-06 | 美国超导体公司 | 用于制造超导体材料的方法、系统和反应器 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN87103978A (zh) | 1988-12-21 |
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| GR02 | Examined patent application | ||
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