Journal Article

Characterization of Mechanical and Radiation Shielding Features of Borosilicate Glasses Doped with MoO3

Mhareb, M. H. A., Sayyed, M. I., Kaky, Kawa M.

2024

Overview

Based on the 20Na 2 O-50B 2 O 3 -(30-x)SiO 2 -xMoO 3 (where x = 5, 10, 15 and 20 mol%) empirical formula, a series of borosilicate glasses were synthesized via the melt quenching technique. The mechanical properties were calculated theoretically based on the Makishima–Mackenzie model, including elastic modulus, packing density, hardness, and Poisson ratio. The physical properties included packing density, density, mean atomic volume, and ratio of packing density/mean atomic volume. The radiation shielding properties for the prepared glasses were theoretically calculated using Phy-X and WinXcom software. The addition of MoO 3 led to a change in sample color and a rise in sample density from 2.601 to 2.997 g/cm 3 . The glass compactness showed a reduction according to molar volume and packing density values. The results generated by Phy-X and XCOM were closely matched, and we found that the squared correlation coefficient (R 2 ) is almost 1. The linear attenuation coefficient (LAC) results demonstrated an increase in the radiation shielding performance with the addition of MoO 3 . At 0.284 and 0.662 MeV, the LACs for the glass with 20 mol% of MoO 3 are 21% and 15% higher than that of the glass with 5 mol% MoO 3 , which confirms that MoO 3 significantly affects LAC values, particularly in the low and intermediate energy levels. The average half value layer ( HVL ¯ ) for the prepared borosilicate glasses for the energies emitted from 137 Cs and 22 Na is reported. The obtained HVL ¯ showed that the thickness of the glasses required to absorb the gamma ray decreases as the density of the glasses changes. The effective atomic number of the glasses increases with the addition of MoO 3 , confirming that the enhancement of radiation shielding features in the glasses is directly correlated with the amount of MoO 3 incorporated.

• Publisher: Springer Netherlands,Springer Nature B.V
• Subject: Atomic properties / Attenuation coefficients / Borosilicate glass / Cesium 137 / Cesium isotopes / Chemistry / Chemistry and Materials Science / Correlation coefficients / Energy levels / Environmental Chemistry / Gamma rays / Inorganic Chemistry / Lasers / Materials Science / Mechanical properties / Modulus of elasticity / Molar volume / Optical Devices / Optics / Packing density / Photonics / Physical properties / Poisson's ratio / Polymer Sciences / Radiation / Radiation shielding / Silicon dioxide / Sodium 22