METHOD FOR MANUFACTURING CERAMIC FUEL PELLETS FOR NUCLEAR REACTORS

METHOD FOR MANUFACTURING CERAMIC FUEL PELLETS FOR NUCLEAR REACTORS

production of sintered fuel pellets for nuclear reactors incorporating fissionable materials. SUBSTANCE: method includes molding and sintering of pellets from uranium dioxide powder; prior to molding superdispersed UO2 powder having mean crystal size not over diffusion length of uranium vacancy with...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: FEDOTOV A.V, PETRUNIN V.F, MALYGIN V.B, SHILOV V.V
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
INORGANIC CHEMISTRY
METALLURGY
NUCLEAR ENGINEERING
NUCLEAR PHYSICS
NUCLEAR REACTORS
PHYSICS
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:production of sintered fuel pellets for nuclear reactors incorporating fissionable materials. SUBSTANCE: method includes molding and sintering of pellets from uranium dioxide powder; prior to molding superdispersed UO2 powder having mean crystal size not over diffusion length of uranium vacancy within time of molded pellet exposure to sintering temperature is added to UO2 powder having specific surface area of particles of at least 2.0 sq. m/g in the amount of up to 30% of mixture obtained. EFFECT: reduced sintering temperature while maintaining specified density and microstructure of pellets. 1 cl, 1 tbl