Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
中道 晋哉; 砂押 剛雄*; 廣岡 瞬; Vauchy, R.; 村上 龍敏
Journal of Nuclear Materials, 595, p.155072_1 - 155072_11, 2024/07
Using dry recycled powders for uranium and plutonium mixed oxide (MOX) fuel production can reduce unnecessary storage and accountability of nuclear material in facilities. The shrinkage behavior of green compacts of dry recycled powders differs from that of conventional raw powders because the dry recycled MOX powder is obtained from the fabrication scrap of sintered pellets. The shrinkage behavior of dry recycled MOX powder has been investigated by dilatometry. Based on the shrinkage curves, sintering apparent activation energies were evaluated using the master sintering curve (MSC) and the constant rate of heating methods. The obtained values were higher than the energy evaluated for raw powder experiments. The sigmoid sintering prediction equation using the MSC function was constructed. The accumulation of data on the activation energy for various sintering conditions will lead to the wide application of this prediction formula in the future.
荒井 康夫; 湊 和生
Journal of Nuclear Materials, 344(1-3), p.180 - 185, 2005/09
被引用回数:24 パーセンタイル:81.96(Materials Science, Multidisciplinary)原研で進めているマイナーアクチノイド(MA)核変換用窒化物燃料の製造及び使用済窒化物燃料の乾式処理技術開発のための電気化学測定に関する研究成果を報告する。MA窒化物燃料の製造については、高純度窒化物合成のための炭素熱還元,MAを含む窒化物固溶体形成及び窒化物の焼結挙動について報告する。乾式処理技術開発のための電気化学測定については、塩化物溶融塩中での陽極溶解挙動,液体陰極回収挙動及び再窒化挙動について報告する。