Determination of activation energy of sintering of ThO2-U3O8 pellets using the master sintering curve approach | Zendy

T.R.G. Kutty | Zendy; K.B. Khan | Zendy; P.V. Hegde | Zendy; Arijit Sengupta | Zendy; S. Majumdar | Zendy; H.S. Kamath | Zendy

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Determination of activation energy of sintering of ThO2-U3O8 pellets using the master sintering curve approach

Author(s) -

T.R.G. Kutty,

K.B. Khan,

P.V. Hegde,

Arijit Sengupta,

S. Majumdar,

H.S. Kamath

Publication year - 2003

Publication title -

science of sintering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.309

H-Index - 25

eISSN - 1820-7413

pISSN - 0350-820X

DOI - 10.2298/sos0303125k

Subject(s) - sintering , dilatometer , pellets , materials science , activation energy , powder metallurgy , metallurgy , solid fuel , composite material , combustion , thermal expansion , chemistry

ThO2 containing around 2 to 3 % U233O2 is considered as fuel for the forthcoming Indian Advanced Heavy Water Reactor (AHWR). High-density ThO2-UO2 pellets have been fabricated by powder metallurgy route using ThO2 and U3O8 powders as the starting materials. U3O8 decomposes to UO2 during high temperature sintering and forms a solid solution with ThO2. The densification behaviour and sintering kinetics of the above were evaluated using a high temperature dilatometer using constant heating rate experiments. To evaluate the activation energy of sintering, a master sintering curve approach has been used. The activation energy for sintering for the above composition in air was found to be 500 kJ/mol

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