Influence of Li2O Incrementation on Mechanical and Gamma-Ray Shielding Characteristics of a TeO2-As2O3-B2O3 Glass System
| Autor: | Mohamed Y. Hanfi, Aljawhara H. Almuqrin, Hanan Al-Ghamdi, K. G. Mahmoud, M.I. Sayyed, Dalal Abdullah Aloraini |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
elastic moduli Materials science Softening point 02 engineering and technology mechanical properties Atomic packing factor 01 natural sciences Article symbols.namesake 0103 physical sciences General Materials Science Shear velocity Composite material Elastic modulus Monte Carlo simulation 010302 applied physics Microscopy QC120-168.85 shielding properties QH201-278.5 Engineering (General). Civil engineering (General) 021001 nanoscience & nanotechnology Poisson's ratio TK1-9971 Sphere packing Descriptive and experimental mechanics Attenuation coefficient Electromagnetic shielding symbols Electrical engineering. Electronics. Nuclear engineering TA1-2040 0210 nano-technology |
| Zdroj: | Materials Materials, Vol 14, Iss 4060, p 4060 (2021) Volume 14 Issue 14 |
| ISSN: | 1996-1944 |
| Popis: | According to the Makishema–Mackenzie model assumption, the dissociation energy and packing density for a quaternary TeO2-As2O3-B2O3-Li2O glass system were evaluated. The dissociation energy rose from 67.07 to 71.85 kJ/cm3, whereas the packing factor decreased from 16.55 to 15.21 cm3/mol associated with the replacement of TeO2 by LiO2 compounds. Thus, as a result, the elastic moduli (longitudinal, shear, Young, and bulk) were enhanced by increasing the LiO2 insertion. Based on the estimated elastic moduli, mechanical properties such as the Poisson ratio, microhardness, longitudinal velocity, shear velocity, and softening temperature were evaluated for the investigated glass samples. In order to evaluate the studied glasses’ gamma-ray shield capacity, the MCNP-5 code, as well as a theoretical Phy-X/PSD program, were applied. The best shielding capacity was achieved for the glass system containing 25 mol% of TeO2, while the lowest ability was obtained for the glass sample with a TeO2 concentration of 5 mol%. Furthermore, a correlation between the studied glasses’ microhardness and linear attenuation coefficient was performed versus the LiO2 concentration to select the glass sample which possesses a suitable mechanical and shielding capacity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|