Structural, elastic and gamma-ray attenuation properties of potassium borate glasses doped with BaO, Bi2O3, or Pb3O4: A comparative assessment

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2024-10-22 DOI:10.1016/j.optmat.2024.116294

Abely E. Mwakuna , R.K.N.R. Manepalli , C. Laxmikanth

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引用次数: 0

Abstract

This study investigates the effect of substituting boron oxide (B₂O₃) with heavy metal oxides (HEMOs) on the structural, mechanical, and gamma-ray shielding properties of potassium borate (KB) glass systems. The glass compositions analyzed include 80B₂O₃–20K₂O and 65B₂O₃–20K₂O-15HEMO (where, HEMO = BaO, Bi₂O₃, or Pb₃O₄). All samples were prepared using the melt-quenching method, and their amorphous nature was confirmed through X-ray diffraction (XRD). Fourier-transform infrared spectroscopy (FTIR) had revealed BO₃, BO₄, and BiO₆ groups beside the B–O–B linkages. The density increased with the addition of HEMOs, following the order: Pb₃O₄ (KB4) > Bi₂O₃ (KB3) > BaO (KB2) > and pure KB (KB1). This trend was also observed in the molar volume (Vₘ) and oxygen molar volume (Vₒ), while the oxygen packing density (P_ρ) decreased. Mechanical properties assessed using the Makishima-Mackenzie model indicated that KB3 exhibited the highest elastic modulus (Yₘ) and Poisson's ratio (μ). The microhardness (Hₘ) followed the sequence KB2 > KB3 > KB4 > KB1, attributed to the higher bonding energy in KB2. Gamma-ray shielding parameters, including mass attenuation coefficients (MAC), were calculated using Phy-X and XCOM software for photon energies between 0.2835 MeV and 1.333 MeV. KB4 (Pb₃O₄) showed superior shielding performance with the highest linear attenuation coefficient (LAC) and the lowest half-value layer (HVL) and mean free path (MFP). Despite KB4's high density, KB3 (Bi₂O₃) is suggested as a more suitable candidate for radiation shielding applications due to its balanced combination of mechanical strength and γ-ray attenuation efficiency.

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掺杂了 BaO、Bi2O3 或 Pb3O4 的硼酸钾玻璃的结构、弹性和伽马射线衰减特性：比较评估

本研究探讨了用重金属氧化物（HEMO）替代氧化硼（B2O3）对硼酸钾（KB）玻璃系统的结构、机械和伽马射线屏蔽性能的影响。分析的玻璃成分包括 80B2O3-20K2O 和 65B2O3-20K2O-15HEMO（其中 HEMO = BaO、Bi2O3 或 Pb3O4）。所有样品均采用熔融淬火法制备，并通过 X 射线衍射 (XRD) 确认其无定形性质。傅立叶变换红外光谱（FTIR）显示了 B-O-B连接旁的BO3、BO4和BiO6基团。随着 HEMOs 的加入，密度依次增加：Pb3O4 (KB4) > Bi2O3 (KB3) > BaO (KB2) > 和纯 KB (KB1)。摩尔体积（Vₘ）和氧摩尔体积（Vₒ）也呈现出这种趋势，而氧堆积密度（Pρ）则有所下降。使用牧岛-麦肯齐模型评估的机械性能表明，KB3 的弹性模量（Yₘ）和泊松比（μ）最高。微硬度（Hₘ）遵循 KB2 > KB3 > KB4 > KB1 的顺序，这归因于 KB2 中较高的键合能量。使用 Phy-X 和 XCOM 软件计算了光子能量在 0.2835 MeV 和 1.333 MeV 之间的伽马射线屏蔽参数，包括质量衰减系数 (MAC)。KB4（Pb3O4）显示出卓越的屏蔽性能，线性衰减系数（LAC）最高，半值层（HVL）和平均自由路径（MFP）最低。尽管 KB4 密度较高，但由于 KB3（Bi2O3）兼具机械强度和γ射线衰减效率，因此建议将其作为辐射屏蔽应用的更合适候选材料。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.