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Study on eutectic melting and relocation behavior of B$$_{4}$$C powder and stainless steel through radiative heating

Ahmed, Z.*; Pellegrini, M.*; Yamano, Hidemasa   ; Sharma, A. K.*; Okamoto, Koji*

Experimental investigations with radiative heating were conducted using stainless steel (SS) tubes filled with boron carbide (B$$_{4}$$C) powder in the temperature range of 1150$$^{circ}$$C to 1372$$^{circ}$$C, specifically targeting long duration melting and its relocation behavior. Eutectic melting occurred when the interface temperature reached approximately 1180$$^{circ}$$C. Two melting mechanisms were identified: the SS layer peeling off the B$$_{4}$$C powder and forming a melting drop that contained boride structures. A comprehensive composition analysis utilizing scanning electron microscopy energy dispersive X ray spectroscopy (SEM EDX) provided insights of the surface morphology of the molten drop after rapid cooling at a rate of 50$$^{circ}$$C/s. Additionally, X ray diffraction (XRD) analysis confirmed the presence of different boride crystal phases.

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English

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Publication Year/Month

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Meeting title

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Materials in Nuclear Energy Systems (MiNES 2023)

Held date

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2023/12

Location (city)

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New Orleans

Location (country)

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U.S.A.

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DOI for research data

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Keywords

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ナトリウム冷却高速炉; 炉心損傷事故; B$$_{4}$$C

Research Facility

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Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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経済産業省資源エネルギー庁

Accesses

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- Accesses

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