KR940000688B1 - Bi-Pb-Sr-Ca-Cu-O계 초전도체의 제조방법 - Google Patents

Bi-Pb-Sr-Ca-Cu-O계 초전도체의 제조방법 Download PDF

Info

Publication number
KR940000688B1
KR940000688B1 KR1019890014743A KR890014743A KR940000688B1 KR 940000688 B1 KR940000688 B1 KR 940000688B1 KR 1019890014743 A KR1019890014743 A KR 1019890014743A KR 890014743 A KR890014743 A KR 890014743A KR 940000688 B1 KR940000688 B1 KR 940000688B1
Authority
KR
South Korea
Prior art keywords
sintering
days
manufacturing
hrs
superconductor
Prior art date
Application number
KR1019890014743A
Other languages
English (en)
Other versions
KR910008878A (ko
Inventor
허필화
Original Assignee
주식회사 금성사
이헌조
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 주식회사 금성사, 이헌조 filed Critical 주식회사 금성사
Priority to KR1019890014743A priority Critical patent/KR940000688B1/ko
Priority to EP19900311112 priority patent/EP0424022A3/en
Priority to JP2272505A priority patent/JPH03174351A/ja
Publication of KR910008878A publication Critical patent/KR910008878A/ko
Application granted granted Critical
Publication of KR940000688B1 publication Critical patent/KR940000688B1/ko

Links

Images

Classifications

    • 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
    • H10N60/80—Constructional details
    • H10N60/85—Superconducting active materials
    • 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
    • C04B35/4521—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 containing bismuth oxide
    • C04B35/4525—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 containing bismuth oxide also containing lead oxide
    • 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
    • C04B35/64—Burning or sintering processes
    • C04B35/645—Pressure sintering
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)

Abstract

내용 없음.

Description

Bi-Pb-Sr-Ca-Cu-O계 초전도체의 제조방법
제1도는 종래 세라믹스의 제조공정도.
제2도는 본발명의 세라믹스 제조공정도.
제3도는 핫프레스(Hot Press)장치도.
제4도는 압력변화에 따른 비저항과 온도와의 상태도.
제5도는 인덕턴스와 온도와의 상태도.
* 도면의 주요부분에 대한 부호의 설명
1 : 지지대 2 : 발열체
3 : 시료홀더
본발명은 Bi-Pb-Sr-Ca-Cu-O계 초전도체의 제조방법에 관한 것이다. 종래의 Bi-계 고온 초전도체 세라믹스의 제조방법은 제1도에서와 같이 원료분말인 Bi2O3, PbO, SrCo3, CaCo3, CuO를 볼밀(ball mill)을 이용하여 12-48시간 분쇄 혼합하여 600-850℃에서 12-48시간씩 하소를 2∼3회 반복한 후 800-900℃에서 7-10일 소결을 행하였다.
이와같은 종래의 제조방법은 소결시간이 7-10일 정도 소요되므로 아주 비경제적이었다. 이에따라 본발명은 상기와 같은 종래의 문제점을 해결코자 하는 것으로서 이하 본발명을 구체적으로 설명한다.
본발명의 Bi-Pb-Sr-Ca-Cu-O계 고온 초전도체 세라믹스 제조방법은 제2도에서와 같이 원료분말인 Bi2O3, SrCo3, CaCo3, CuO, PbO를 각각 1.4:0.6:2:2:3.8의 몰비로 평량한후 볼밀을 이용하여 혼합및 분쇄한후 600-800℃에서 24-48시간 2-3회 하소를 한다.
그후 800-900℃에서 48시간 소결을 행한후 콜드프레싱(Cold Pressing)하여 원하는 크기로 성형하고 800-900℃에서 제3도의 핫프레스의 압력봉(4)을 이용하여 시료(3)에 압력변화 시키면서 2일간 소결을 한다.
도면상 미설명부호 1은 지지대이고, 2는 발열체이다. 이와같이 본발명은 소결을 행한후 콜드프레싱과 핫 프레싱후 2일정도만 소결을 하므로서 종래의 소결시간인 7일간에 비해 약 1/3이하로 단축하므로서 생산성 향상에 기여 한다.
이상에서와 같이 본발명은 제4도와 같이 압력변화에 따른 전기적 특성이 조사되었고 또한 제5도에서와 같이 압력변화에 따른 자기적 특성을 조사하였다. 전기적 특성조사에서 압력변화에 따른 초전도체의 TC(임계온도)의 변화는 (표 1)과 같이 나타났다.
[표 1]
Figure kpo00001

Claims (1)

  1. 원료분말인 Bi2O3, SrCo3, CaCo3, CuO, PbO를 평량하여 볼밀(ball mill)에서 혼합, 분쇄한후 600-800℃에서 24-48시간 2-3회 하소하고, 800-900℃에서 48시간 소결하여 콜드프레싱(Cold Pressing)을 거친후 800-900℃에서 핫프레스(Hot Press)한다음 2일간 소결함을 특징으로한 Bi-Pb-Sr-Ca-Cu-O계 초전도체의 제조방법.
KR1019890014743A 1989-10-14 1989-10-14 Bi-Pb-Sr-Ca-Cu-O계 초전도체의 제조방법 KR940000688B1 (ko)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019890014743A KR940000688B1 (ko) 1989-10-14 1989-10-14 Bi-Pb-Sr-Ca-Cu-O계 초전도체의 제조방법
EP19900311112 EP0424022A3 (en) 1989-10-14 1990-10-10 Manufacturing process for superconductor of bi-pb-sr-ca-cu-o series
JP2272505A JPH03174351A (ja) 1989-10-14 1990-10-12 Ｂｉ―Ｐｂ―Ｓｒ―Ｃａ―Ｃｕ―Ｏ系超伝導体の製造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890014743A KR940000688B1 (ko) 1989-10-14 1989-10-14 Bi-Pb-Sr-Ca-Cu-O계 초전도체의 제조방법

Publications (2)

Publication Number Publication Date
KR910008878A KR910008878A (ko) 1991-05-31
KR940000688B1 true KR940000688B1 (ko) 1994-01-27

Family

ID=19290668

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890014743A KR940000688B1 (ko) 1989-10-14 1989-10-14 Bi-Pb-Sr-Ca-Cu-O계 초전도체의 제조방법

Country Status (3)

Country Link
EP (1) EP0424022A3 (ko)
JP (1) JPH03174351A (ko)
KR (1) KR940000688B1 (ko)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3727910C2 (de) * 1987-08-21 1995-11-23 Hoechst Ag Dichter supraleitender keramischer Formkörper und Verfahren zu seiner Herstellung sowie seine Verwendungen
JP2804039B2 (ja) * 1988-02-24 1998-09-24 株式会社東芝 化合物超電導体およびその製造方法
EP0367844A1 (de) * 1988-11-07 1990-05-16 Siemens Aktiengesellschaft Verfahren zur Herstellung eines sinterkeramischen Körpers aus einem Supraleitermaterial mit hoher Sprungtemperatur

Also Published As

Publication number Publication date
KR910008878A (ko) 1991-05-31
EP0424022A2 (en) 1991-04-24
EP0424022A3 (en) 1991-08-28
JPH03174351A (ja) 1991-07-29

Similar Documents

Publication Publication Date Title
EP0302308A2 (en) Method for producing superconducting material
KR940000688B1 (ko) Bi-Pb-Sr-Ca-Cu-O계 초전도체의 제조방법
EP0500966B1 (en) Oxide superconductor and method of manufacturing said superconductor
Rahaman et al. Mass Transport and Chemical Demixing of Y‐Ba‐Cu‐O Compounds During Sintering in Temperature Gradients
Motai et al. Preparation of Superconducting YBa2Cu3O7-x Powders by Ball Milling and Their Properties
KR900005788B1 (ko) 초전도체 제조방법
KR970001258B1 (ko) 초전도체
KR940004998B1 (ko) Bi-Pb계 초전도체의 제조방법
JPH01176268A (ja) 高温超伝導体の製造方法
JP2632543B2 (ja) Ｂｉ−Ｓｒ−Ｃａ−Ｃｕ−Ｏ系超伝導体の製造方法
JP2507538B2 (ja) 酸化物超電導体の製造方法
JPS6424067A (en) Production of compound oxide superconductor
KR920007597B1 (ko) 산화물 초전도체 및 그 제조 방법
CN117142857A (zh) 一种温度稳定型复合微波介质陶瓷及其制备方法
JP2597579B2 (ja) 超電導体の製造方法
JPH01317123A (ja) 酸化物超伝導体の製造方法
JPH01119555A (ja) セラミック超伝導材料の製造方法
JPH0431355A (ja) 超伝導セラミックスの製造方法
JPH01179750A (ja) 超電導セラミックス及びその製造方法
JPH0234516A (ja) Ｔｌ−Ｂａ−Ｃａ−Ｃｕ−Ｏ系超電導セラミックスの製造法
JPS63291815A (ja) 超電導体の製造方法
JPH06263519A (ja) 酸化物超電導構造体の製造方法
JPH02196058A (ja) 超電導体の製造方法
JPS6445764A (en) Production of ceramic superconducting form
JPH01160857A (ja) 超伝導セラミックスおよびその製造法

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 19951226

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee