Effect of sintering temperature and thorium content on density of (Th, U)O2 pellets
- 1. National Key Laboratory for Nuclear Fuel and Materials, Nuclear Power Institute of China, Chengdu (China)
Description
This paper studies the effects of sintering temperature and thorium content On the density of (Th, U)O2 pellets. The activation energy for sintering (Th, U)O2 pellets were calculated, the movement and transplantation were analyzed by using Scanning Electron Microscope(SEM). The results show that the density of (Th, U)O2 pellets decrease as the proportion of thorium increase when sintering temperature is constant. The density of pellets increase as the sintering temperature increase. The activation energy for sintering (Th, U)O2 pellets increase as the proportion of thorium increase. When the proportion of thorium were 20%, 50%,80070, the activation energy for sintering (Th, U)O2 pellets were 277.65 kJ/mol, 300.70 kJ/mol, 380.99 kJ/mol respectively. The pores in the (Th, U)O2 pellets which the proportion of thorium was 20% were mainly at the junction of grain boundary, and most of the pores were spherical. (authors)
Additional details
Publishing Information
- Journal Title
- Nuclear Power Engineering
- Journal Volume
- 35
- Journal Issue
- 6
- Journal Page Range
- p. 41-44
- ISSN
- 0258-0926
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 48083679
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ACTIVATION ENERGY; BREEDING PELLETS; CONCENTRATION RATIO; DENSITY; GRAIN BOUNDARIES; SCANNING ELECTRON MICROSCOPY; SINTERING; SPHERICAL CONFIGURATION; THORIUM; THORIUM OXIDES; URANIUM OXIDES
- Descriptors DEC
- ACTINIDE COMPOUNDS; ACTINIDES; CHALCOGENIDES; CONFIGURATION; DIMENSIONLESS NUMBERS; ELECTRON MICROSCOPY; ELEMENTS; ENERGY; FABRICATION; METALS; MICROSCOPY; MICROSTRUCTURE; OXIDES; OXYGEN COMPOUNDS; PELLETS; PHYSICAL PROPERTIES; THORIUM COMPOUNDS; URANIUM COMPOUNDS
Optional Information
- Notes
- 3 figs., 1 tab., 5 refs.