Scholarlink

<p>Glass-ceramics (GCs) are specialized materials that combine a non-crystalline structure with enhanced structural and thermal properties compared to their parent glasses. In this study, glass-ceramics labelled as SHPP0.5, SHPP1.0, and SHPP1.5 were synthesized using the conventional melt-quench technique. X-ray diffraction analysis was executed to confirm the crystalline nature of the manufactured GC samples. The results indicated that Pb₃P₂O was the dominant phase in SHPP0.5 and SHPP1.5, while Pb₁₀P₆O₂₅ emerged as the primary phase in SHPP1.0. Further, Fourier transform infrared spectroscopy analysis showed that doping of P₂O₅ GC system significantly influenced the peak positions in the spectra. SEM micrographs of the GC sample SHPP0.5 revealed a distinctive stair-like morphology with an ordered grain structure of Pb₃P₂O₈ crystals, accompanied by dispersed Si₂₄O₄₈ grains. Various radiation parameters including the mass attenuation coefficient (MAC), linear attenuation coefficient, half-value layer (HVL), tenth-value layer (TVL), atomic cross-section (ACS) and electronic cross-section, effective atomic number (Z<sub>eff</sub>), effective electron density (N<sub>eff</sub>), mean free path (MFP), were comprehensively calculated using the Phy-X/PSD software within selected photon energy range of 0.015–15&#xa0;MeV. The MAC values vary from 57.865 to 56.116&#xa0;cm²g<sup>−1</sup> for synthesized GCs which signifying substantial attenuation potential. Also, the MFP, HVL and TVL values revealed that SHPP1.5 sample exhibits highest radiation shielding properties making it highly suitable for protection against harmful radiation. The Z<sub>eff</sub> and N<sub>eff</sub> revealed that the attenuation is higher in the low energy region which is attributed to the increased photoelectric absorption. Furthermore, SHPP1.5 possesses highest FNRCS values 0.110&#xa0;cm<sup>− 1</sup>, 0.114&#xa0;cm<sup>− 1</sup> and 0.120&#xa0;cm<sup>− 1</sup> for SHPP0.5, SHPP1.0 and SHPP1.5, highlighting its superior shielding properties. The overall results revealed that presence of heavy metals of PbO highly impact the radiation shielding of all GCs and SHPP1.5 is an excellent candidate for radiation shielding applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Exploring the Synthesis, Structural, and Morphological Properties of Glass Ceramics in the 40SiO2–35H3BO3–(25 − x)PbO–xP2O5 System for Radiation Shielding Applications

  • 期刊论文

  • 发表日期：

    2025年5月16日

查看全文
  • Zaireen Fatima,
  • Shweta,
  • Rajat Kumar Mishra,
  • Sarvesh Kumar Avinashi,
  • Chandki Ram Gautam

摘要

Glass-ceramics (GCs) are specialized materials that combine a non-crystalline structure with enhanced structural and thermal properties compared to their parent glasses. In this study, glass-ceramics labelled as SHPP0.5, SHPP1.0, and SHPP1.5 were synthesized using the conventional melt-quench technique. X-ray diffraction analysis was executed to confirm the crystalline nature of the manufactured GC samples. The results indicated that Pb₃P₂O was the dominant phase in SHPP0.5 and SHPP1.5, while Pb₁₀P₆O₂₅ emerged as the primary phase in SHPP1.0. Further, Fourier transform infrared spectroscopy analysis showed that doping of P₂O₅ GC system significantly influenced the peak positions in the spectra. SEM micrographs of the GC sample SHPP0.5 revealed a distinctive stair-like morphology with an ordered grain structure of Pb₃P₂O₈ crystals, accompanied by dispersed Si₂₄O₄₈ grains. Various radiation parameters including the mass attenuation coefficient (MAC), linear attenuation coefficient, half-value layer (HVL), tenth-value layer (TVL), atomic cross-section (ACS) and electronic cross-section, effective atomic number (Zeff), effective electron density (Neff), mean free path (MFP), were comprehensively calculated using the Phy-X/PSD software within selected photon energy range of 0.015–15 MeV. The MAC values vary from 57.865 to 56.116 cm²g−1 for synthesized GCs which signifying substantial attenuation potential. Also, the MFP, HVL and TVL values revealed that SHPP1.5 sample exhibits highest radiation shielding properties making it highly suitable for protection against harmful radiation. The Zeff and Neff revealed that the attenuation is higher in the low energy region which is attributed to the increased photoelectric absorption. Furthermore, SHPP1.5 possesses highest FNRCS values 0.110 cm− 1, 0.114 cm− 1 and 0.120 cm− 1 for SHPP0.5, SHPP1.0 and SHPP1.5, highlighting its superior shielding properties. The overall results revealed that presence of heavy metals of PbO highly impact the radiation shielding of all GCs and SHPP1.5 is an excellent candidate for radiation shielding applications.