Akademik Veri Yönetim Sistemi
Journal of Alloys and Compounds, cilt.1026, 2025 (SCI-Expanded, Scopus)
In this study, TiO₂-doped borate glasses ((70-x)B2O3+ 7.5ZnO+ 7.5SrO+ 5Na2O+ 5CaO+ 5BaO+ (x)TiO2 (x: 0, 2.5, 5, 7.5 and 10 mol%)) were synthesized and systematically characterized to evaluate their optical, mechanical, physical, and radiation shielding properties. The glass compositions were varied by increasing the TiO₂ content from 0 % to 10 %, with B₂O₃ content correspondingly reduced. Increasing TiO2 content from 0 % to 10 % increased density of glasses from 2.869 g/cm³ to 3.042 g/cm³. This was due to Ti's larger atomic weight compared to B. Optical analyses showed a decrease in bandgap energy as TiO₂ concentration increased, indicating improved light absorption capabilities. Mechanical testing showed that adding TiO₂ increased hardness from 4.85 GPa to 5.23 GPa when the TiO2 content increased from 0 % to 10 %. Radiation shielding capabilities were assessed using gamma-ray and neutron interactions. Gamma shielding mass attenuation coefficient (MAC) values at 81 keV increased from 0.6591 cm²/g to 0.6677 cm²/g when TiO2 concentration grew from 0 % to 10 % in glasses. Similarly, neutron shielding performance, measured through the effective removal cross-section (ΣR), increased from 0.104 cm⁻¹ to 0.109 cm⁻¹. Experimental neutron dose measurements further validated the results, showing that the absorbed dose rate increased from 22.02 % to 23.91 %. These enhancements are attributed to the high atomic number and neutron cross-section of Ti, which significantly improve the glasses’ attenuation properties. The results demonstrate that the glass composition with 10 % TiO2 has the most effective optical, mechanical, and radiation shielding performance. These multifunctional glasses hold promise for applications in radiation shielding, optical devices, and structural materials, offering a unique balance of properties optimized through TiO₂ doping.