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ナトリウム冷却高速炉の炉心損傷事故時の制御棒材の共晶溶融挙動に関する研究,31; 電磁浮遊法によるその場観察と急冷法を組み合わせた9-11mass% B$$_{4}$$C含有SUS316Lの凝固過程の解明

Study on eutectic melting behavior of control rod materials in core disruptive accidents of sodium-cooled fast reactors, 31; Study of solidification pathway of SUS316L containing 9-11mass% B$$_{4}$$C by in-situ observation and quench method with electromagnetic levitation

福山 博之*; 東 英生*; 大塚 誠*; 安達 正芳*; 山野 秀将   

Fukuyama, Hiroyuki*; Higashi, Hideo*; Otsuka, Makoto*; Adachi, Masayoshi*; Yamano, Hidemasa

ナトリウム冷却高速炉の炉心損傷事故における制御棒材(炭化ホウ素: B$$_{4}$$C)と原子炉構造材(ステンレス鋼: SS)の共晶反応メカニズム検討のため、電磁浮遊法によるその場観察と急冷法による組織観察を組み合わせ9-11mass%B$$_{4}$$C含有SUS316Lの凝固過程を調査した結果について報告する。

The purpose of this study is to investigate the eutectic reaction mechanism of the control rod material (boron carbide (B$$_{4}$$C)) and the structural material of a reactor vessel (stainless steel: SUS316L (SS)) during a core disruptive accident in a sodium-cooled fast reactor. This paper describes a solidification pathway of SUS316L containing 9-11mass% B$$_{4}$$C by in-situ observation and quench method with electromagnetic levitation.

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