Investigation of the Effect of PbO Doping on Telluride Glass Ceramics as a Potential Material for Gamma Radiation Shielding
Kozlovskiy A.L. Shlimas D.I. Zdorovets M.V. Elsts E. Konuhova M. Popov A.I.
March 2023MDPI
Materials
2023#16Issue 6
The purpose of this paper is to study the effect of PbO doping of multicomponent composite glass-like ceramics based on TeO2, WO3, Bi2O3, MoO3, and SiO2, which are one of the promising materials for gamma radiation shielding. According to X-ray diffraction data, it was found that the PbO dopant concentration increase from 0.10 to 0.20–0.25 mol results in the initialization of the phase transformation and structural ordering processes, which are expressed in the formation of SiO2 and PbWO4 phases, and the crystallinity degree growth. An analysis of the optical properties showed that a change in the ratio of the contributions of the amorphous and ordered fractions leads to the optical density increase and the band gap alteration, as well as a variation in the optical characteristics. During the study of the strength and mechanical properties of the synthesized ceramics, depending on the dopant concentration, it was found that when inclusions in the form of PbWO4 are formed in the structure, the strength characteristics increase by 70–80% compared to the initial data, which indicates the doping efficiency and a rise in the mechanical strength of ceramics to external influences. During evaluation of the shielding protective characteristics of the synthesized ceramics, it was revealed that the formation of PbWO4 in the structure results in a rise in the high-energy gamma ray absorption efficiency.
absorption , doping , optical properties , protective materials , shielding materials
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Engineering Profile Laboratory, L.N. Gumilyov, Eurasian National University, Satpaev Str. 5, Astana, 010008, Kazakhstan
Institute of Geology and Oil and Gas Business, Satbayev University, Satbayev St. 22, Almaty, 050032, Kazakhstan
Institute of Solid State Physics, University of Latvia, 8 Kengaraga Str, Riga, LV-1063, Latvia
Engineering Research Institute, “Ventspils International Radio Astronomy Centre”, Ventspils University of Applied Sciences, 101 Inzenieru Str, Ventspils, LV-3601, Latvia
Engineering Profile Laboratory
Institute of Geology and Oil and Gas Business
Institute of Solid State Physics
Engineering Research Institute
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