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/cm3to 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 TiO2increased 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 (Sigma R), 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 TiO2doping.