YTTRIUM OXYFLUORIDE, STARTING MATERIAL POWDER FOR PRODUCTION OF STABILIZED YTTRIUM OXYFLUORIDE, AND METHOD FOR PRODUCING STABILIZED YTTRIUM OXYFLUORIDE

YTTRIUM OXYFLUORIDE, STARTING MATERIAL POWDER FOR PRODUCTION OF STABILIZED YTTRIUM OXYFLUORIDE, AND METHOD FOR PRODUCING STABILIZED YTTRIUM OXYFLUORIDE

An yttrium oxyfluoride is represented by YOF and is stabilized by a fluoride represented by CaF2. Preferably, the number of moles of Ca with respect to 100 mol of yttrium is from 8 to 40 mol. A powder material is made of a first powder mixture including a calcium fluoride powder represented by CaF2...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KOIDE, Masahiro, IMAURA, Shoji, SETO, Yasuhiro
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Beschreibung
Zusammenfassung:An yttrium oxyfluoride is represented by YOF and is stabilized by a fluoride represented by CaF2. Preferably, the number of moles of Ca with respect to 100 mol of yttrium is from 8 to 40 mol. A powder material is made of a first powder mixture including a calcium fluoride powder represented by CaF2 and an yttrium oxyfluoride powder represented by YOF, or a second powder mixture including a calcium fluoride powder represented by CaF2, an yttrium fluoride powder represented by YF3, and an yttrium oxide powder represented by Y2O3. A production method involves firing a molded product of the first or second powder mixture under predetermined conditions.