検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

Thermal expansion measurement of (U,Pu)O$$_{2-x}$$ in oxygen partial pressure controlled atmosphere

酸素分圧制御雰囲気下における(U,Pu)O$$_{2-x}$$熱膨張率測定

加藤 正人   ; 生澤 佳久   ; 砂押 剛雄*; McClellan, K.*; Nelson, A.*

Kato, Masato; Ikusawa, Yoshihisa; Sunaoshi, Takeo*; McClellan, K.*; Nelson, A.*

MOX燃料の熱膨張率をO/M比をパラメータとして測定した。測定は、ディラトメータを用い、降温過程において、O/Mを一定に保てるように酸素分圧をコントロールした雰囲気において行った。熱膨張率のPu含有率依存性とO/M依存性を評価し、O/M比が低下するに従い、熱膨張が大きくなることを確認した。

Thermal expansion of MOX was measured as a function of O/M ratio. The measurements of the thermal expansion and O/M were carried out with dilatometer and thermo gravimeter, respectively, in cooling process of 4 K/min. Oxygen potential of MOX has been measured, and the correlation was derived to represent the relationship between oxygen potential and O/M ratio. The P$$_{O2}$$ in the atmosphere was controlled according to the previous data which were controlled by adjusting PH$$_{2}$$/PH$$_{2}$$O ratio. It was confirmed to hold constant O/M ratio during the measurements by thermo-gravimetry. Thermal expansion of (U$$_{0.7}$$Pu$$_{0.3}$$)O$$_{2-x}$$ increased with increasing the deviation x. The correlation to represent the thermal expansion was derived with Pu content and O/M ratio. The thermal expansion coefficients are consistent with those of PuO$$_{2-x}$$.

Access

:

- Accesses

InCites™

:

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.