Effect of He ion irradiation on the early corrosion behaviour of SIMP steel in liquid lead-bismuth eutectic

IF 3.2 2区 工程技术 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Nuclear Materials Pub Date : 2025-02-01 Epub Date: 2025-01-17 DOI:10.1016/j.jnucmat.2025.155623
Zhiwei Ma , Peng Jin , Xing Gao , Lilong Pang , Tielong Shen , Zhiguang Wang
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Abstract

He-ion irradiated and pristine SIMP steel samples were corroded in oxygen-saturated liquid LBE at 550°C for 24 h. The results show that the oxide layer on the irradiated sample is significantly thicker than that on the pristine sample. In the irradiated sample, the inner oxide layer is notably enriched with Si and Cr at the martensitic lath boundaries, causing severe depletion of these elements within the laths. This significantly accelerates the oxidation of the irradiated sample in liquid LBE in combination with the increased surface roughness of the irradiated sample, the radiation enhanced elemental diffusion and the voids in the inner oxide layer.
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He离子辐照对SIMP钢在铅铋共晶液中早期腐蚀行为的影响
结果表明:经he离子辐照后的SIMP钢样品与未加工的SIMP钢样品在含氧饱和液体LBE中550℃腐蚀24 h,经he离子辐照后的SIMP钢样品的氧化层明显厚于未加工后的SIMP钢样品。在辐照样品中,在马氏体板条边界处,内氧化层明显富集了Si和Cr,导致板条内这些元素严重耗损。这显著加速了辐照样品在液态LBE中的氧化,同时辐照样品的表面粗糙度增加,辐射增强了元素扩散和内氧化层中的空洞。
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来源期刊
Journal of Nuclear Materials
Journal of Nuclear Materials 工程技术-材料科学:综合
CiteScore
5.70
自引率
25.80%
发文量
601
审稿时长
63 days
期刊介绍: The Journal of Nuclear Materials publishes high quality papers in materials research for nuclear applications, primarily fission reactors, fusion reactors, and similar environments including radiation areas of charged particle accelerators. Both original research and critical review papers covering experimental, theoretical, and computational aspects of either fundamental or applied nature are welcome. The breadth of the field is such that a wide range of processes and properties in the field of materials science and engineering is of interest to the readership, spanning atom-scale processes, microstructures, thermodynamics, mechanical properties, physical properties, and corrosion, for example. Topics covered by JNM Fission reactor materials, including fuels, cladding, core structures, pressure vessels, coolant interactions with materials, moderator and control components, fission product behavior. Materials aspects of the entire fuel cycle. Materials aspects of the actinides and their compounds. Performance of nuclear waste materials; materials aspects of the immobilization of wastes. Fusion reactor materials, including first walls, blankets, insulators and magnets. Neutron and charged particle radiation effects in materials, including defects, transmutations, microstructures, phase changes and macroscopic properties. Interaction of plasmas, ion beams, electron beams and electromagnetic radiation with materials relevant to nuclear systems.
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