纳米BaTiO3改性剂对li20 - BaTiO3 - b2o3: TiO2玻璃形貌、结构及辐射屏蔽特性的影响

IF 2.6 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Engineering and Technology Pub Date : 2025-09-11 DOI:10.1016/j.net.2025.103905

Linganaboina Srinivasa Rao

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引用次数: 0

摘要

选择了（40-x） Li2O-xBaTiO3-59B2O3: 12tio2（其中x = 0、5、10、15、20）mol %的玻璃组合物。XRD和SEM研究证实了玻璃的非晶态性质。能谱分析显示，B、O、Ba、Ti元素分别在0.2、0.5、4.5、4.9 keV处出现峰值。FTIR光谱通过[BO3]， [BO4]， [TiO4]和[TiO6]单元揭示了玻璃结构。在光子能量≈37.4 keV时，由于Ba （Z = 56）的存在，所有BTx样品（BT0除外）的MAC值都出现了明显的凸起。在0.01 MeV下，BT20具有最高的MAC （9.00 cm2/g）、最低的HVL （0.0244 cm）、最低的TVL （0.0352 cm）和最短的MFP (0.0352 cm)，表明其具有优异的屏蔽性能。BaTiO3含量的增加使玻璃密度从2.352 g/cm3提高到3.154 g/cm3，伽马射线衰减显著改善。Li2O含量最高的样品BT0 （40 mol %）表现出最好的中子衰减（ΣR/ρ = 0.1149 cm−1），而BT20的中子衰减最小（ΣR/ρ = 0.0786 cm−1）。因此，富li2o玻璃对热（0.0254 eV）和快（4 MeV）中子的屏蔽效果较好，而富batio3玻璃对混合辐射场的屏蔽效果较好。

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Modifier effect of BaTiO3 nanoparticles on morphology, structural, and radiation shielding characteristics of Li2O–BaTiO3–B2O3: TiO2 glasses

A particular glass composition of (40-x)Li₂O–xBaTiO₃–59B₂O₃: 1TiO₂ (where x = 0, 5, 10, 15, 20) in mol % was chosen. The XRD and SEM studies confirmed amorphous nature of the glasses. The EDS revealed peaks at 0.2 keV, 0.5 keV, 4.5 keV, and 4.9 keV corresponding to B, O, Ba, Ti elements respectively. FTIR spectra revealed glass structure by means of [BO₃], [BO₄], [TiO₄], and [TiO₆] units. Prominent bump in the MAC value for all BT_x samples (except BT₀) was detected at photon energy ≈37.4 keV due to presence of Ba (Z = 56). The glass BT₂₀ exhibited the highest MAC (9.00 cm²/g), lowest HVL (0.0244 cm), lowest TVL (0.0352 cm) and shortest MFP (0.0352 cm) at 0.01 MeV, indicating its superior shielding performance. Increasing BaTiO₃ content enhanced the glass density from 2.352 to 3.154 g/cm³, leading to a significant improvement in gamma ray attenuation. The sample BT₀ with the highest Li₂O content (40 mol %) exhibited the best neutron attenuation (Σ_R/ρ = 0.1149 cm⁻¹), while BT₂₀ had the lowest (Σ_R/ρ = 0.0786 cm⁻¹). Therefore, Li₂O-rich glasses are better for thermal (0.0254 eV) and fast (4 MeV) neutron shielding, while BaTiO₃-rich glasses are better for gamma shielding for mixed radiation fields.

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来源期刊

Nuclear Engineering and Technology 工程技术-核科学技术

CiteScore

4.80

自引率

7.40%

发文量

431

审稿时长

3.5 months

期刊介绍： Nuclear Engineering and Technology (NET), an international journal of the Korean Nuclear Society (KNS), publishes peer-reviewed papers on original research, ideas and developments in all areas of the field of nuclear science and technology. NET bimonthly publishes original articles, reviews, and technical notes. The journal is listed in the Science Citation Index Expanded (SCIE) of Thomson Reuters. NET covers all fields for peaceful utilization of nuclear energy and radiation as follows: 1) Reactor Physics 2) Thermal Hydraulics 3) Nuclear Safety 4) Nuclear I&C 5) Nuclear Physics, Fusion, and Laser Technology 6) Nuclear Fuel Cycle and Radioactive Waste Management 7) Nuclear Fuel and Reactor Materials 8) Radiation Application 9) Radiation Protection 10) Nuclear Structural Analysis and Plant Management & Maintenance 11) Nuclear Policy, Economics, and Human Resource Development