FR2422594A1 - Procede de fabrication d'oxyde d'yttrium ayant des particules particulierement grosses - Google Patents

Procede de fabrication d'oxyde d'yttrium ayant des particules particulierement grosses

Info

Publication number
FR2422594A1
FR2422594A1 FR7909533A FR7909533A FR2422594A1 FR 2422594 A1 FR2422594 A1 FR 2422594A1 FR 7909533 A FR7909533 A FR 7909533A FR 7909533 A FR7909533 A FR 7909533A FR 2422594 A1 FR2422594 A1 FR 2422594A1
Authority
FR
France
Prior art keywords
yttrium
particularly large
yttrium oxide
large particles
oxalate
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.)
Granted
Application number
FR7909533A
Other languages
English (en)
Other versions
FR2422594B1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FORSKNINGSGRUPPE SJELDNE JORDART
SJELDNE JORDARTER FORSKNING
Original Assignee
FORSKNINGSGRUPPE SJELDNE JORDART
SJELDNE JORDARTER FORSKNING
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 FORSKNINGSGRUPPE SJELDNE JORDART, SJELDNE JORDARTER FORSKNING filed Critical FORSKNINGSGRUPPE SJELDNE JORDART
Publication of FR2422594A1 publication Critical patent/FR2422594A1/fr
Application granted granted Critical
Publication of FR2422594B1 publication Critical patent/FR2422594B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/41—Preparation of salts of carboxylic acids
    • C07C51/412—Preparation of salts of carboxylic acids by conversion of the acids, their salts, esters or anhydrides with the same carboxylic acid part
    • 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
    • C01F17/218—Yttrium oxides or hydroxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Cosmetics (AREA)

Abstract

a. Procédé de fabrication d'oxyde d'yttrium sous la forme de particules de dimensions particulièrement importantes par précipitation d'oxalate d'yttrium résultant de la réaction des ions d'yttrium avec des ions d'oxalate; b. Procédé caractérisé en ce qu'on maintient l'oxalate d'yttrium, précipité, à une température comprise entre 90 degrés et 100 degrés C pendant une durée comprise entre une demi-heure et 24 heures pour former des cristaux d'oxalate d'yttrium que l'on peut sécher, brûler en oxyde sans que ces cristaux se désintègrent.
FR7909533A 1978-04-14 1979-04-13 Procede de fabrication d'oxyde d'yttrium ayant des particules particulierement grosses Granted FR2422594A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO781307A NO140925C (no) 1978-04-14 1978-04-14 Fremgangsmaate til fremstilling av yttriumoksyd med saerlig store partikler

Publications (2)

Publication Number Publication Date
FR2422594A1 true FR2422594A1 (fr) 1979-11-09
FR2422594B1 FR2422594B1 (fr) 1983-01-21

Family

ID=19884165

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7909533A Granted FR2422594A1 (fr) 1978-04-14 1979-04-13 Procede de fabrication d'oxyde d'yttrium ayant des particules particulierement grosses

Country Status (7)

Country Link
US (1) US4238467A (fr)
JP (1) JPS5515987A (fr)
DE (1) DE2915396C2 (fr)
FR (1) FR2422594A1 (fr)
GB (1) GB2018760B (fr)
NL (1) NL7902934A (fr)
NO (1) NO140925C (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61251514A (ja) * 1985-04-30 1986-11-08 Mitsubishi Chem Ind Ltd 高純度希土類酸化物の回収方法
US4755492A (en) * 1986-10-06 1988-07-05 General Electric Company Yttrium oxide ceramic body
BR8707200A (pt) * 1987-12-23 1989-08-15 Pirelli Brasil Sintese de supercondutores a partir da xenotima
US4815516A (en) * 1988-03-04 1989-03-28 Precision Castparts Corp. Method for recovering casting refractory compositions from investment casting shell molds
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.
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.
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
JP2868176B2 (ja) * 1993-04-27 1999-03-10 信越化学工業株式会社 希土類元素酸化物粉末の製造方法
US5435959A (en) * 1993-12-17 1995-07-25 Nike, Inc. Method of making a mold and parts from the mold
JPH07309623A (ja) * 1994-05-18 1995-11-28 Shin Etsu Chem Co Ltd 角状希土類元素蓚酸アンモニウム複塩および角状希土類元素酸化物の製造方法
JP3522990B2 (ja) * 1996-11-13 2004-04-26 信越化学工業株式会社 イットリア球状微粒子の製造方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE691847A (fr) * 1965-12-28 1967-05-29
GB1208565A (en) * 1966-10-10 1970-10-14 Johnson Matthey Co Ltd Improvements in and relating to phosphors
DE2015519A1 (de) * 1969-04-02 1970-10-15 Sylvania Electric Products, Inc., Wilmington, Del. (V.St.A.) Verfahren zur Vergrößerung der Partikelgröße von Oxyden seltener Erden

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5246199B2 (fr) * 1972-12-25 1977-11-22

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE691847A (fr) * 1965-12-28 1967-05-29
GB1208565A (en) * 1966-10-10 1970-10-14 Johnson Matthey Co Ltd Improvements in and relating to phosphors
DE2015519A1 (de) * 1969-04-02 1970-10-15 Sylvania Electric Products, Inc., Wilmington, Del. (V.St.A.) Verfahren zur Vergrößerung der Partikelgröße von Oxyden seltener Erden

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CA1976 *

Also Published As

Publication number Publication date
GB2018760A (en) 1979-10-24
NO140925B (no) 1979-09-03
NL7902934A (nl) 1979-10-16
DE2915396A1 (de) 1979-10-31
FR2422594B1 (fr) 1983-01-21
DE2915396C2 (de) 1982-06-09
NO140925C (no) 1979-12-12
US4238467A (en) 1980-12-09
GB2018760B (en) 1982-09-22
JPS5747133B2 (fr) 1982-10-07
NO781307L (no) 1979-09-03
JPS5515987A (en) 1980-02-04

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