Melting apparatus for the synthesis of bulk ZrF/sub 4/-based fluoride glass
Journal Article
·
· Journal of the American Ceramic Society; (USA)
- AT and T Bell Labs., Murray Hill, NJ (US)
Heavy-metal fluoride glasses are currently prepared by melting of the solid fluoride precursors. The authors constructed a melting facility for the synthesis of ZrF/sub 4/-based fluoride glass cullet. This stand-alone system is presented. It provides a controlled (dry and reactive) atmosphere and in situ quenching of the melts. The glass is melted in a vitreous carbon crucible, which is mounted in a silica tube flow reactor. The reactor is resistively heated with a tube furnace and purged with He and SF/sub 6/ or Cl/sub 2/. It was found that of the latter two halogenating species only Cl/sub 2/ prevents effectively the formation of black inclusions in the melt (ZrF/sub 3/ and ZrF/sub 2/ particles). With this melting apparatus they routinely melted 250-g batches of optically clear ZrF/sub 4/-BaF/sub 2/-LaF/sub 3/-AlF/sub 3/-NaF glass samples.
- OSTI ID:
- 5214259
- Journal Information:
- Journal of the American Ceramic Society; (USA), Journal Name: Journal of the American Ceramic Society; (USA) Vol. 72:3; ISSN JACTA; ISSN 0002-7820
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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RARE EARTH AND YTTRIUM FLUORIDES. SOLUBILITY RELATIONS IN VARIOUS MOLTEN NaF-ZrF$sub 4$ AND NaF-ZrF$sub 4$-UF$sub 4$ SOLVENTS
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OSTI ID:4162147
Related Subjects
36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM FLUORIDES
CHEMICAL COMPOSITION
CHLORIDES
CHLORINE COMPOUNDS
CRYSTALLIZATION
ELEMENTS
FLUIDS
FLUORIDES
FLUORINE COMPOUNDS
GASES
GLASS
HALIDES
HALOGEN COMPOUNDS
HELIUM
LANTHANUM COMPOUNDS
LANTHANUM FLUORIDES
MELTING
METALLIC GLASSES
NONMETALS
PHASE TRANSFORMATIONS
PRECURSOR
QUENCHING
RARE EARTH COMPOUNDS
RARE GASES
SODIUM COMPOUNDS
SODIUM FLUORIDES
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM FLUORIDES
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM FLUORIDES
CHEMICAL COMPOSITION
CHLORIDES
CHLORINE COMPOUNDS
CRYSTALLIZATION
ELEMENTS
FLUIDS
FLUORIDES
FLUORINE COMPOUNDS
GASES
GLASS
HALIDES
HALOGEN COMPOUNDS
HELIUM
LANTHANUM COMPOUNDS
LANTHANUM FLUORIDES
MELTING
METALLIC GLASSES
NONMETALS
PHASE TRANSFORMATIONS
PRECURSOR
QUENCHING
RARE EARTH COMPOUNDS
RARE GASES
SODIUM COMPOUNDS
SODIUM FLUORIDES
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM FLUORIDES