gnp增强B4C-TiB2复合材料的中子衰减：综合实验和MCNP6.2模拟分析

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2025-09-22 DOI:10.1016/j.radphyschem.2025.113326

Mirac Kamislioglu , Onur Erbay , Berkay Uygun , Demet Aydogmus , Erhan Ayas , Bulent Buyuk , Nuri Yorulmaz , M. Murat Yasar , I. Atilla Reyhancan , Filiz Cinar Sahin , Ismail Kocak , Bircan Calisir

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引用次数: 0

摘要

本研究研究了通过火花等离子烧结（SPS）制备的1、2和3体积%石墨烯纳米片（GNP）增强的B4C-TiB2基准复合材料和B4C-TiB2 -GNP复合材料的中子辐射衰减性能。B4C独特的吸收特性使其具有良好的中子屏蔽性能，而在B4C中加入TiB2和GNP，其密度增强作用使其屏蔽能力进一步增强。采用装有5-Ci 239Pu-Be中子源的核芝加哥榴弹炮-3 （NH-3）进行了中子透射试验。研究了gnp增强B4C-TiB2复合材料的宏观总截面（ΣTot）值。其中，含有1 vol% GNP的样品与其他成分相比，ΣTot值略高。通过MCNP6蒙特卡罗模拟对热中子衰减进行了评估，验证了实验数据。模拟和测量结果之间的强相关性证实了所采用方法的准确性和一致性，并且结果与已建立的文献一致。研究结果表明，gnp增强B4C-TiB2复合材料作为先进核辐射屏蔽应用的多功能材料，特别是在能源领域，以及航空航天和国防领域，具有广阔的潜力。

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Neutron attenuation in GNP-reinforced B4C–TiB2 composites: Integrated experimental and MCNP6.2 simulation analysis

This study investigates the neutron radiation attenuation properties of B₄C–TiB₂ reference composites and B₄C–TiB₂-GNP composites reinforced with 1, 2, and 3 vol% graphene nanoplatelets (GNP), fabricated via Spark Plasma Sintering (SPS). B₄C offers excellent neutron shielding owing to its unique absorption property, while TiB₂ and GNP additions to B₄C can further enhance its shielding capability due to their combined density enhancement effects. Neutron transmission tests were carried out using a Nuclear-Chicago Howitzer-3 (NH-3) equipped with a 5-Ci ²³⁹Pu–Be neutron source. The total macroscopic cross-section (Σ_Tot) values determined for the GNP-reinforced B₄C–TiB₂ composites were investigated. Among them, the sample containing 1 vol% GNP exhibited a slightly higher Σ_Tot value compared to the other compositions. Thermal neutron attenuation was also evaluated through MCNP6 Monte Carlo simulations to validate experimental data. A strong correlation between simulated and measured results confirms the accuracy and consistency of the adopted methodology, and the results align with established literature. The findings demonstrate the promising potential of GNP-reinforced B₄C–TiB₂ composites as multifunctional materials for advanced nuclear radiation shielding applications, particularly in the energy sector, as well as in the aerospace and defense sectors.

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来源期刊

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.