検索対象:     
報告書番号:
※ 半角英数字
 年 ~  年

Oxygen potential measurement of americium oxide by electromotive force method

起電力法によるAmO$$_{2-x}$$の酸素ポテンシャル測定

音部 治幹; 赤堀 光雄; 湊 和生

Otobe, Haruyoshi; Akabori, Mitsuo; Minato, Kazuo

AmO$$_{2-x}$$の酸素ポテンシャルを起電力法によって、${it x}$は0.1から0.5まで、温度は1000から1333Kまでの範囲で測定した。その酸素ポテンシャルは、1333Kでは${it x}$=0.01のときに-19.83kJ/mol、${it x}$=0.485のときに-319.1kJ/molであり、CeO$$_{2-x}$$の酸素ポテンシャルよりも、同じ${it x}$の場合に約200kJ/molだけ高かった。酸素ポテンシャルの組成(${it x}$)や温度依存性からAm-O系の相図を試作した。その相図には、中間相Am$$_{7}$$O$$_{12}$$とAm$$_{9}$$O$$_{16}$$の存在が示された。

The oxygen potentials of AmO$$_{2-x}$$ were measured in the ${it x}$ range of 0.01 to 0.5 and the temperature range of 1000 to 1333 K by the electromotive force (EMF) method. The oxygen potentials at 1333 K were -19.83 kJ/mol for ${it x}$=0.01 and -319.1 kJ/mol for ${it x}$=0.485, which were higher than those of CeO$$_{2-x}$$ by approximately 200 kJ/mol for the corresponding ${it x}$ values. From the dependence of the oxygen potentials on ${it x}$ and temperature, a tentative phase diagram of Am-O system was proposed, which suggested the presence of the intermediate phases of Am$$_{7}$$O$$_{12}$$ and Am$$_{9}$$O$$_{16}$$ in the Am-O system.

Access

:

- Accesses

InCites™

:

パーセンタイル:18.8

分野:Materials Science, Ceramics

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.