Production and fabrication of thorium fuels at BARC
Description
Thorium oxide can be consolidated by conventional powder metallurgy technique of compaction and sintering. Thorium oxide is a difficult material to sinter and even at a sintering temperature of 2000degC, the density achievable is not > 80% T.D. Hence, activated sintering with the use of additives is resorted to for achieving densities > 90% T.D. Sinterability of thoria powders obtained from different compounds such as hydroxide, hydrocarbonate, tannate, oxalate etc. has been thoroughly investigated. The effect of different additives such as CaO, CaF2, MgO, Nb2O5 on the sinterability of thoria has been extensively studied. With the addition of 0.25% Nb2O5, sintering temperature can be brought down to as low as 1150deg-1200degC. High density thoria pellets have been fabricated for use in CIRUS, DHRUVA, FBTR, PHWRs and Experimental Fission/Fusion Hybrid Systems. (author). 6 refs., 8 figs
Additional details
Publishing Information
- Publisher
- Indian Nuclear Society.
- Imprint Place
- Bombay (India)
- Imprint Title
- Proceedings of the Indo-Japan seminar on thorium utilization (held at Bombay during December 10-13, 1990)
- Imprint Pagination
- 300 p.
- Journal Page Range
- p. 99-104.
- Report number
- INIS-mf--13516
Conference
- Title
- Indo-Japan seminar on thorium utilization.
- Dates
- 10-13 Dec 1990.
- Place
- Bombay (India).
INIS
- Country of Publication
- India
- Country of Input or Organization
- India
- INIS RN
- 24037492
- Subject category
- S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS; S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CALCIUM; CHEMICAL PREPARATION; DUCTILITY; ELECTROLYSIS; FLOWSHEETS; INTERSTITIALS; MAGNESIUM; NUCLEAR FUELS; REDUCTION; SAFETY; SINTERING; THORIUM; THORIUM CHLORIDES; THORIUM OXIDES
- Descriptors DEC
- ACTINIDE COMPOUNDS; ACTINIDES; ALKALINE EARTH METALS; CHALCOGENIDES; CHEMICAL REACTIONS; CHLORIDES; CHLORINE COMPOUNDS; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; DIAGRAMS; ELEMENTS; ENERGY SOURCES; FABRICATION; FUELS; HALIDES; HALOGEN COMPOUNDS; INFORMATION; MATERIALS; MECHANICAL PROPERTIES; METALS; OXIDES; OXYGEN COMPOUNDS; POINT DEFECTS; REACTOR MATERIALS; SYNTHESIS; TENSILE PROPERTIES; THORIUM COMPOUNDS