METHOD FOR REDUCTION OF CRUCIBLES FROM PRECIOUS METALS, IN PARTICULAR FROM IRIDIUM

The invention relates to the growing technology of monocrystals. A method for reduction of crucible from precious metal, in particular from iridium, which comprises its preliminary annealing at pressure 10- 10torr with subsequent welding of cracks. The annealing is carried out at 2000-2200 ° during...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	BONDAR VALERII HRYHOROVYCH, KRYVOSHEIN VADYM IVANOVYCH
Format:	Patent
Sprache:	eng ; rus ; ukr
Schlagworte:	AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE APPARATUS THEREFOR CHEMISTRY CRYSTAL GROWTH METALLURGY PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE REFINING BY ZONE-MELTING OF MATERIAL SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE SINGLE-CRYSTAL-GROWTH UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL
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