CN1059227A - 用高温超导体母体制造模制体的方法 - Google Patents

用高温超导体母体制造模制体的方法 Download PDF

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CN1059227A
CN1059227A CN91105722A CN91105722A CN1059227A CN 1059227 A CN1059227 A CN 1059227A CN 91105722 A CN91105722 A CN 91105722A CN 91105722 A CN91105722 A CN 91105722A CN 1059227 A CN1059227 A CN 1059227A
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mould
molding
strontium
hydrochloric acid
calcium
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CN1039856C (zh
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艾伯哈德·泼雷斯勒
夭齐姆·柏克
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Hoechst AG
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/45—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on copper oxide or solid solutions thereof with other oxides
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/653—Processes involving a melting step
    • 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S505/00—Superconductor technology: apparatus, material, process
    • Y10S505/725—Process of making or treating high tc, above 30 k, superconducting shaped material, article, or device
    • Y10S505/739—Molding, coating, shaping, or casting of superconducting material

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Glass Compositions (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Superconductor Devices And Manufacturing Methods Thereof (AREA)

Abstract

870-1000℃下将铋，锶，钙和铜氧化物均匀熔体 注入模中而用这些高温超导体母体制造更复杂模制 体的方法，其特征是适当几何形状模由熔点至少 1000℃的物料制成，而且含固化铋，锶，钙和铜氧化 物熔体的模20-90℃用稀盐酸处理，直到模溶解为 止。

Description

本发明涉及用铋，锶，钙和铜的氧化物高温超导体母体制造更为复杂的模制体的方法，其中870-1000℃下将上述氧化物均匀熔体注入模中。
DE-OS 3，830，092公开了Bi2（Sr，Ca）3Cu2OS（x＝8-10）的高温超导体制造方法，其中将铋，锶，钙和铜的氧化物或碳酸盐之化学计量混合物于870-1100℃加热形成缺氧均匀熔体，再将熔体浇注入模中固化。从模中脱除的浇注体780-850℃回火6-30h后在氧气氛中600-830℃处理至少6h而补偿缺氧。因此可制成几个cm边长或直径的片及长50cm，直径10mm的杆，总是由相纯化合物构成。
该法缺点是只能制得简单模制体，如块或半圆柱体，其中固化后从开口模中取出模制体并于氧气氛中回火而转化成高温超导体。
本发明目的是提出用铋，锶，钙和铜氧化物高温超导体母体制造更为复杂的模制体，如环件或螺圈的方法，其中将其均匀熔体注入模中，该方法中熔体固化后的模制体可以简单方式从模中脱除并送入氧气氛中回火，而又不会损坏或侵蚀模制体，而且该法中适当几何形状模由熔点至少1000℃的物料制成并且含铋，锶，钙和铜氧化物固化熔体的模20-90℃用盐酸处理，直到模熔解为止，
本发明方法必要时还可具有以下特征;
a）模由铜制成;
b）盐酸中加硝酸;
c）所用盐酸和硝酸大致等浓度;
d）模由含二氧化硅物料制成;
e）用石英玻璃;
f）用玻璃，特别是硼硅酸盐玻璃;
g）盐酸含5-30wt%HF。
本发明方法中模在几小时内溶解，而铋，锶，钙和铜氧化物构成的模制体基本上不受侵蚀，这显然是由于模制体表面形成了锶和钙氟化物层。
本发明用玻璃或石英玻璃制成模也可制得复杂几何形状的模制体体，因为用普通玻璃吹制技术生产适当的模之工艺相当简单。
例1
用铜板（13.8cm2;4.64g）和固化铋，锶，钙和铜氧化物模制体（14.0cm2;13.4g）制成的等面积试片50℃用200ml浓度均为16%的硝酸和盐酸之混合物处理。
尽管1h后铜片已基本上完全溶解，但模制体在这一时间点的失重却低于2mg。经6h进一步在混合物中露出模制体后，失重11mg，少于0.1%或0.8mg/cm2。
例2
用Duran玻璃（14cm2;2.36g）和铋，锶，钙和铜氧化物模制体（7cm2;7.54g）制成的等面积试片50℃用200ml16%盐酸处理。8h后，2.10g（ 89%）Duran玻璃溶解，而模制体失重3mg（
Figure 911057226_IMG2
0.04%）
例3
重复例2，只是用30%盐酸处理。尽管3.5h后Duran玻璃已完全被溶解，但这一时间点的模制体失重6mg（
Figure 911057226_IMG3
0.07%）。

Claims (8)

1、870-1000℃下将铋，锶，钙和铜氧化物均匀熔体注入模中而用这些高温超导体母体制造更复杂模制体的方法，其特征是适当几何形状模由熔点至少1000℃的物料制成，而且含固化铋，锶，钙和铜氧化物熔体的模20-90℃用稀盐酸处理，直到模溶解为止。
2、权利要求1的方法，其特征是模是铜制成。
3、权利要求1或2的方法，其特征是盐酸中加硝酸。
4、权利要求3的方法其特征是所用盐酸和硝酸大致等浓度。
5、权利要求1的方法，其特征是模由含二氧化硅的物料制成。
6、权利要求5的方法，其特征是用石英玻璃。
7、权利要求5的方法，其特征是用玻璃，特别是硼硅酸盐玻璃。
8、权利要求1-7中至少一次的方法其特征是盐酸含5-30wt%HF。
CN91105722A 1990-08-17 1991-08-16 用高温超导体母体制造模制体的方法 Expired - Fee Related CN1039856C (zh)

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DE4026017A DE4026017A1 (de) 1990-08-17 1990-08-17 Verfahren zur herstellung von formkoerpern aus vorstufen von hochtemperatursupraleitern
DEP4026017.8 1990-08-17

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AT (1) ATE111877T1 (zh)
CA (1) CA2048144A1 (zh)
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DE4320753A1 (de) * 1993-06-23 1995-01-05 Hoechst Ag Verfahren zur Herstellung rohrförmiger Formteile aus Hoch-T¶c¶-Supraleiter-Material
US6878251B2 (en) * 1998-03-12 2005-04-12 Lifescan, Inc. Heated electrochemical cell
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US2974388A (en) * 1958-01-30 1961-03-14 Norton Co Process of making ceramic shells
US3429962A (en) * 1965-12-01 1969-02-25 Gen Electric Method of forming a metallic oxide article
JPS55134170A (en) * 1979-04-04 1980-10-18 Oyo Kagaku Kenkyusho Manufacture of deformed tungusten structure
EP0327044B2 (de) * 1988-02-05 1998-04-22 Hoechst Aktiengesellschaft Supraleiter und Verfahren zu seiner Herstellung
WO1989009343A1 (en) * 1988-03-23 1989-10-05 Hitachi Construction Machinery Co., Ltd. Hydraulic driving unit
DE3830092A1 (de) * 1988-09-03 1990-03-15 Hoechst Ag Verfahren zur herstellung eines hochtemperatursupraleiters sowie daraus bestehende formkoerper
JPH0394061A (ja) * 1989-09-07 1991-04-18 Nisshin Steel Co Ltd タングステンルツボの製造方法
US5215961A (en) * 1990-06-25 1993-06-01 The United States Of America As Represented By The Secretary Of The Navy Machinable oxide ceramic

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NO305898B1 (no) 1999-08-16
CA2048144A1 (en) 1992-02-18
US5328890A (en) 1994-07-12
NO913221L (no) 1992-02-18
DE59103029D1 (de) 1994-10-27
JPH04254415A (ja) 1992-09-09
NO913221D0 (no) 1991-08-16
EP0472876B1 (de) 1994-09-21
DE4026017A1 (de) 1992-02-20
CN1039856C (zh) 1998-09-16
KR920004306A (ko) 1992-03-27
ATE111877T1 (de) 1994-10-15
EP0472876A3 (de) 1992-03-11

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