KR880013823A - 12면체의 결정형을 갖는 산화 스칸듐의 제조방법 - Google Patents

12면체의 결정형을 갖는 산화 스칸듐의 제조방법 Download PDF

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Publication number
KR880013823A
KR880013823A KR1019880006104A KR880006104A KR880013823A KR 880013823 A KR880013823 A KR 880013823A KR 1019880006104 A KR1019880006104 A KR 1019880006104A KR 880006104 A KR880006104 A KR 880006104A KR 880013823 A KR880013823 A KR 880013823A
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KR
South Korea
Prior art keywords
scandium
precipitate
hydroxide
crystal form
scandium oxide
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KR1019880006104A
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English (en)
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KR940010938B1 (ko
Inventor
엣지 기무라
도시오 나까니시
Original Assignee
나가도 다께시
미쓰비시 긴소꾸 가부시기가이샤
시기 모리야
미쓰비시 덴기 가부시기가이샤
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Application filed by 나가도 다께시, 미쓰비시 긴소꾸 가부시기가이샤, 시기 모리야, 미쓰비시 덴기 가부시기가이샤 filed Critical 나가도 다께시
Publication of KR880013823A publication Critical patent/KR880013823A/ko
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Publication of KR940010938B1 publication Critical patent/KR940010938B1/ko

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/14—Solid thermionic cathodes characterised by the material
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F17/00—Compounds of rare earth metals
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F17/00—Compounds of rare earth metals
    • C01F17/20—Compounds containing only rare earth metals as the metal element
    • C01F17/206—Compounds containing only rare earth metals as the metal element oxide or hydroxide being the only anion
    • C01F17/212—Scandium oxides or hydroxides
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/14—Solid thermionic cathodes characterised by the material
    • H01J1/144—Solid thermionic cathodes characterised by the material with other metal oxides as an emissive material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/06—Cathodes
    • H01J35/064—Details of the emitter, e.g. material or structure
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/30—Particle morphology extending in three dimensions
    • C01P2004/42—(bi)pyramid-like

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Steroid Compounds (AREA)

Abstract

내용 없음

Description

12면체의 결정형을 갖는 산화 스칸듐의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 실시예 1과, 실시예 2에서 얻어진 산화 스칸듐 분말의 미립자 구조를 각각으로 나타내는 주사전자 현미사진. 제3도까지는 비교예 1,2 그리고 3에 의해서 얻어진 산화스칸듐 분말의 미립자 구조를 각각으로 나타내는 주사 전자현미 사진.

Claims (6)

12면체 결정 형태인 것을 특징으로 하는 산화 스칸듐 분말.
염화이온과 암모늄 이온이 있는곳에서 스칸듐을 포함하는 산성의 친수성 용액으로부터 수산 스칸듐을 형성하는 것과, 그 침전물을 모으는 것과, 모아진 침전물을 가열하는 것을 포함하는 12면체 결정형의 산화 스칸듐 분말을 제조하기 위한 방법.
제2항에 있어서, 수산 스칸듐의 침전물이 스칸듐을 함유하는 질산 용액이나 황상용액에 옥살산과 염화 암모늄을 첨가시킴으로써 생성되는 것을 특징으로 하는 제조방법.
제2항에 있어서, 수산 스칸듐의 침전물이 스칸듐을 함유하는 염산용액에 수산 암모늄을 첨가시킴으로써 생성되는 것을 특징으로 하는 제조방법.
제2항 내지 제4항에 있어서, 형성된 수산 스칸듐 침전물이 모액에서 묵히어지는 것을 특징으로 하는 제조방법.
제2항 내지 제5항중 어느 항에 있어서, 기술된 제조방법에 의해서 제조된 12면체 결정형의 산화 스칸듐 분말.
※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019880006104A 1987-05-26 1988-05-25 12면체의 결정형을 갖는 산화 스칸듐의 제조방법 KR940010938B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP?62-127216 1987-05-26
JP???62-?127216 1987-05-26
JP62127216A JPH0627004B2 (ja) 1987-05-26 1987-05-26 １２面体の結晶形を有する酸化スカンジウムの製造方法

Publications (2)

Publication Number Publication Date
KR880013823A true KR880013823A (ko) 1988-12-22
KR940010938B1 KR940010938B1 (ko) 1994-11-19

Family

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Application Number Title Priority Date Filing Date
KR1019880006104A KR940010938B1 (ko) 1987-05-26 1988-05-25 12면체의 결정형을 갖는 산화 스칸듐의 제조방법

Country Status (10)

Country Link
US (1) US4980141A (ko)
JP (1) JPH0627004B2 (ko)
KR (1) KR940010938B1 (ko)
CN (1) CN1019097B (ko)
CA (1) CA1331688C (ko)
DE (1) DE3817742A1 (ko)
FR (1) FR2615847B1 (ko)
GB (1) GB2205090B (ko)
NO (1) NO171969C (ko)
RU (1) RU2065401C1 (ko)

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JPH03271118A (ja) * 1990-03-20 1991-12-03 Mitsubishi Kasei Corp 球状希土類酸化物およびその製造法
FR2661674B1 (fr) * 1990-05-04 1994-04-08 Rhone Poulenc Chimie Procede de fabrication d'oxalates doubles de terres rares, et d'ammonium et leurs utilisations pour la fabrication d'oxydes de terres rares, oxalates doubles et oxydes obtenus.
FR2669028B1 (fr) * 1990-11-13 1992-12-31 Rhone Poulenc Chimie Procede de fabrication d'oxalates doubles de terres rares et d'ammonium et leurs utilisations pour la fabrication d'oxydes de terres rares.
FR2669027B1 (fr) * 1990-11-13 1992-12-31 Rhone Poulenc Chimie Procede de fabrication d'oxalates doubles de terres rares et d'ammonium et leurs utilisations pour la fabrication d'oxydes de terres rares et oxydes de terres rares obtenus.
JPH0710730B2 (ja) * 1990-11-22 1995-02-08 信越化学工業株式会社 希土類元素酸化物の製造方法
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Also Published As

Publication number Publication date
CN1019097B (zh) 1992-11-18
US4980141A (en) 1990-12-25
FR2615847A1 (fr) 1988-12-02
CN1038072A (zh) 1989-12-20
GB2205090A (en) 1988-11-30
NO882286D0 (no) 1988-05-25
JPH0627004B2 (ja) 1994-04-13
JPS63291813A (ja) 1988-11-29
NO171969B (no) 1993-02-15
NO171969C (no) 1993-05-26
GB8812374D0 (en) 1988-06-29
DE3817742A1 (de) 1988-12-08
CA1331688C (en) 1994-08-30
RU2065401C1 (ru) 1996-08-20
GB2205090B (en) 1991-03-20
FR2615847B1 (fr) 1990-06-01
KR940010938B1 (ko) 1994-11-19
NO882286L (no) 1988-11-28
DE3817742C2 (ko) 1993-07-22

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