Fe2O3对La2O3-SiO2-B2O3-MgO- Fe2O3玻璃辐射屏蔽及力学性能的影响

IF 3.3 3区材料科学 Q3 CHEMISTRY, PHYSICAL

Silicon Pub Date : 2025-07-10 DOI:10.1007/s12633-025-03373-w

Dalal Abdullah Aloraini, Aljawhara Almuqrin, Badriah Albarzan, E. A. Abdel Wahab, Kh. S. Shaaban

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引用次数: 0

摘要

制备了配方为75B2O3-10SiO2-5La2O3-(10-x)MgO- xfe2o3（0≤x≤5 mol%）的玻璃样品，考察了用Fe2O3取代MgO的效果。密度由3.19 g/cm3增加到4.32 g/cm3，摩尔体积由24.62减小到19.56 m3/mol。随着Fe2O3含量的增加，材料的纵向波速（VL）和剪切波速（VT）以及弹性模量等力学性能得到了持续改善。在屏蔽γ辐射方面，Fe2O3含量的增加导致线性衰减系数（LAC）值的增加，这主要是由于密度的增加。在0.015 MeV时，LAC （cm−1）值最高，为43.94 (LMBSFe-0) ~ 69.811 (LMBSFe-5)；在15 MeV时，LAC值急剧下降，分别为0.074 （LMBSFe-0）和0.1 （LMBSFe-5）。在0.015 MeV下，平均自由程由（LMBSFe-0）的0.02276减小到（LMBSFe-5）的0.01432 (cm)，而在15 MeV下，平均自由程由（LMBSFe-0）的13.5882减小到（LMBSFe-5）的10.04991。随着Fe2O3含量的增加，MFP的降低降低了光子的穿透性，增强了玻璃的屏蔽能力。因此，LMBSFe-5具有最佳的屏蔽γ射线的性能。

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Influence of Fe2O3 on Radiation Shielding, and Mechanical Properties of La2O3-SiO2-B2O3-MgO- Fe2O3 Glasses

Glass samples with the formula 75B₂O₃-10SiO₂-5La₂O₃-(10-x)MgO-xFe₂O₃, (0 ≤ x ≤ 5 mol%), were manufactured to investigate the effect of substituting Fe₂O₃ for MgO. The density increases from 3.19 to 4.32 g/cm³ while the molar volume decreases from 24.62 to 19.56 m³/mol. Mechanical properties, including longitudinal (V_L) and shear (V_T) wave velocities and elastic moduli, improved consistently with higher Fe₂O₃ content. In terms of γ-radiation shielding, increasing Fe₂O₃ content resulted in higher linear attenuation coefficient (LAC) values, primarily because of the increase in density. At 0.015 MeV, the LAC (cm⁻¹) values are highest, ranging from 43.94 (LMBSFe-0) to 69.811 (LMBSFe-5) while, At 15 MeV, values decrease sharply to 0.074 (LMBSFe-0) and 0.1 (LMBSFe-5). At 0.015 MeV, mean free path decreased from 0.02276 for (LMBSFe-0) to 0.01432 for (LMBSFe-5) (cm) while, At 15 MeV, decreased from 13.5882 for (LMBSFe-0) to 10.04991 for (LMBSFe-5). The decrease in MFP with higher Fe₂O₃ content reduces photon penetration and enhances glass shielding capability. Therefore, LMBSFe-5 exhibited the best γ-ray shielding performance among the studied compositions.

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来源期刊

Silicon CHEMISTRY, PHYSICAL-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

5.90

自引率

20.60%

发文量

685

审稿时长

>12 weeks

期刊介绍： The journal Silicon is intended to serve all those involved in studying the role of silicon as an enabling element in materials science. There are no restrictions on disciplinary boundaries provided the focus is on silicon-based materials or adds significantly to the understanding of such materials. Accordingly, such contributions are welcome in the areas of inorganic and organic chemistry, physics, biology, engineering, nanoscience, environmental science, electronics and optoelectronics, and modeling and theory. Relevant silicon-based materials include, but are not limited to, semiconductors, polymers, composites, ceramics, glasses, coatings, resins, composites, small molecules, and thin films.