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Oxygen Potentials of (Am 0.5 Np 0.5 )O 2− x
Author(s) -
Otobe Haruyoshi,
Akabori Mitsuo,
Arai Yasuo,
Minato Kazuo
Publication year - 2009
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.1551-2916.2008.02828.x
Subject(s) - oxygen , analytical chemistry (journal) , electrolyte , oxide , cubic zirconia , atmospheric temperature range , chemistry , electrochemistry , fluorite , materials science , inorganic chemistry , thermodynamics , electrode , physics , ceramic , organic chemistry , chromatography
The oxygen potentials of the oxygen‐deficient fluorite‐type oxide (Am 0.5 Np 0.5 )O 2− x were measured by the electrochemical method using a zirconia solid electrolyte. Coulomb titration has been performed for the sample at 1333 K over 0.021≤ x ≤0.25. The oxygen potentials were −93.63 and −440.18 kJ/mol for x =0.021 and 0.25 at 1333 K, respectively. The temperature dependence of the oxygen potentials was also measured between 1000 and 1333 K over the x range of 0.021≤ x ≤0.243. The temperature dependence was almost linear over the x and temperature ranges concerned.