2021年1月
Solidification and re-melting mechanisms of SUS-B4C eutectic mixture
JOURNAL OF NUCLEAR MATERIALS
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- 巻
- 543
- 号
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.jnucmat.2020.152527
- 出版者・発行元
- ELSEVIER
Fundamental understanding of the high-temperature interaction between stainless steel (SUS) and B4C is indispensable for estimating and characterizing the fuel debris generated during severe accidents of boiling water reactors (BWR), such as Fukushima Dai-ichi Nuclear Power Station (FDNPS, also referred to as "1F") in Japan. This study aims at systematically characterizing the solidified products of molten SUS-B4C mixtures by powder X-ray diffraction (PXRD), scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), and thermogravimetry-differential thermal analysis (TG-DTA) with a range of the B4C content relevant to the fuel debris composition expected at 1F, in order to elucidate the solidification and re-melting mechanisms. The results indicated that gamma-Fe and (Cr,Fe)(2)B are the major solidified phases when the B4C content is below 3 mass%, while (Cr,Fe)(23)(C,B)(6) is formed as an additional third phase when the B4C content exceeds 3 mass%. The solidification of molten SUS-B4C mixture and remelting of solidified SUS-B4C melt are eutectic, which is mainly controlled by the pseudo-binary Fe-B system that is influenced by the C and Cr content and additional minor components such as Mo. (C) 2020 Elsevier B.V. All rights reserved.
- リンク情報
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- DOI
- https://doi.org/10.1016/j.jnucmat.2020.152527
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000600309100003&DestApp=WOS_CPL
- URL
- http://www.scopus.com/inward/record.url?eid=2-s2.0-85091251619&partnerID=MN8TOARS
- ID情報
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- DOI : 10.1016/j.jnucmat.2020.152527
- ISSN : 0022-3115
- eISSN : 1873-4820
- ORCIDのPut Code : 92942247
- SCOPUS ID : 85091251619
- Web of Science ID : WOS:000600309100003