Browsing by Author "El-Agawany, F. I., & El-Adawy, A"

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    The impact of PbF2 on the ionizing radiation shielding competence and mechanical properties of TeO2 – PbF2 glasses and glass-ceramics.
    (2021) Rammah, Y. S.;; OLARINOYE, OYELEKE; El-Agawany, F. I., & El-Adawy, A
    The influence of adding PbF2 on the elastic properties and radiation shielding competences of nine different samples labelled as TPb10-TPb90 with the form of (100-X)TeO 2-XPbF2 : (where X = 10–90 in steps of 10 mol%) glasses and glass-ceramics was investigated via the bond compression model and WinXcom software. The average cross-link density ( n c ) increased from 2.2 to 3.8 and the average atomic ring size (l) decreases from 0.390 to 0.356 nm with the increase of Pb ions content in the TPb10-TPb90 samples. The K to 111.09 GPa and Young’s modulus (E BC BC increased from 84.47 GPa ) increased from 136.89 GPa to 199.60 GPa for TPb10 to TPb90 samples. Poisson’s ratio ( σ BC ) decreased from 0.229 to 0.200, while the hardness (H) increased from 10.02 GPa to 16.59 GPa. The MAC of the glasses follows the order throughout the energy spectrum: TPb10 < TPb20 < TPb30 < TPb40 < TPb50 < TPb60 < TPb70 < TPb80