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安全性・経済性向上を目指したMA核変換用窒化物燃料サイクルに関する研究開発,4; 燃料模擬物質の粉砕条件と焼結密度の相関

R&D on nitride fuel cycle for MA transmutation to enhance safety and economy, 4; Correlation of milling condition and sintered density of nitride fuel surrogate material

高木 聖也; 高野 公秀 

Takaki, Seiya; Takano, Masahide

マイナーアクチノイドの核変換を行うための窒化物燃料に関して、ポアフォーマ添加による焼結密度制御のための基礎的な知見を得るために、様々な粉砕条件のもとDy$$_{0.3}$$Zr$$_{0.7}$$N模擬窒化物燃料の焼結実験を行った。模擬窒化物燃料の焼結密度は粉砕粉末の比表面積増加に伴い上昇するが、粒内の歪み増加に伴い焼結密度が減少する傾向が確認できた。

Regarding nitride fuel for nuclear transformation of minor actinides, in order to obtain fundamental knowledge for sintering density control by adding pore former, under the various grinding conditions, Dy$$_{0.3}$$Zr$$_{0.7}$$N simulated nitride fuel Sintering experiments were carried out. Although the sintered density of the simulated nitride fuel increases with the increase of the specific surface area of the pulverized powder, it can be confirmed that the sintered density decreases as the strain in the grain increases.

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