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Air Oxidation of UO 2 Fuel Fragments at 175° to 400°C
Author(s) -
Hastings Ian J.,
Rose David H.,
Kelm John R.,
Irvine David A.,
Novak J.
Publication year - 1986
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1986.tb04723.x
Subject(s) - irradiation , chemistry , activation energy , radiochemistry , nuclear chemistry , analytical chemistry (journal) , mineralogy , environmental chemistry , nuclear physics , physics
The air oxidation at 175° to 400°C Of unirradiated and irradiated UO 2 fuel fragments was characterized by apparent activation energies of 140 ± 10 and 120 ± 10 kJ/mol, respectively. There was a small enhancement in the rate of weight gain for irradiated fragments compared with unirradiated fragments up to ∼300°C; from 300° to 400°C there was no significant difference in oxidation rate. Air availability had a strong effect on rate of weight change above 300°C.