Published November 2002 | Version v1
Book Metadata-only

Resintering behavior in oxidatively sintered UO2 and UO2-5wt%CeO2 pellet

Creators

  • 1. Korea Atomic Energy Research Inst., Daejon (Korea, Republic of)

Description

The cause of large density drop, 2-3%T.D., of oxidatively sintered UO2 and UO2-5wt%CeO2 pellets during the resintering in H2 atmosphere has been studied for powders admixed with zinc stearate lubricant for pressing. The density of UO2-5wt%CeO2 pellet admixed with zinc stearate and sintered in CO2-H2 atmosphere was decreased by about 3%T.D. and a number of crack-like pores were observed in the pellet after the resintering, while that of the pellets admixed with stearic acid or Acrawax and sintered in the same condition was little changed. The pellets admixed with zinc stearate and sintered in H2-CO2-H2 or H2 atmospheres showed the density increase below 1%T.D. during the resintering. Oxidatively sintered UO2-5wt%CeO2 pellets mixed with Zn or ZnO also displayed the density drop of about 2.7%T.D. and crack-like pores after the resintering. Therefore, the major cause of large swelling of the pellets admixed with zinc stearate and sintered in CO2-H2 atmosphere after the resintering is found to be Zn residues. (author)

Availability note (English)

Available from the Internet at URL https://doi.org/10.1080/00223131.2002.10875562
Part of:
Proceedings of actinide 2001 international conference

Additional details

Identifiers

DOI
10.1080/00223131.2002.10875562;

Publishing Information

Publisher
Atomic Energy Society of Japan
Imprint Place
Tokyo (Japan)
Imprint Title
Proceedings of actinide 2001 international conference
Imprint Pagination
986 p.
Journal Page Range
p. 697-700

Conference

Title
Actinide 2001 international conference
Dates
4-9 Nov 2001
Place
Hayama, Kanagawa (Japan)

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
51054834
Subject category
S36: MATERIALS SCIENCE; S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CERIUM OXIDES; DENSITY; DILATOMETRY; FUEL PELLETS; LUBRICANTS; MICROSTRUCTURE; MIXTURES; NUCLEAR FUELS; OXIDATION; SINTERING; SWELLING; URANIUM OXIDES; WATER COOLED REACTORS; ZINC
Descriptors DEC
ACTINIDE COMPOUNDS; CERIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; DEFORMATION; DISPERSIONS; ELEMENTS; ENERGY SOURCES; FABRICATION; FUELS; MATERIALS; METALS; OXIDES; OXYGEN COMPOUNDS; PELLETS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; REACTOR MATERIALS; REACTORS; THERMAL ANALYSIS; URANIUM COMPOUNDS

Optional Information

Notes
9 refs., 6 figs., 1 tab.; This record replaces 34044892