Heavy alloy based on tungsten and bismuth: fabrication, crystal structure, morphology, and shielding efficiency against gamma-radiation.

Autor: Tishkevich DI; SSPA 'Scientific-Practical Materials Research Centre of NAS of Belarus' 220072 Minsk Belarus rottkovich@gmail.com., Rotkovich AA; SSPA 'Scientific-Practical Materials Research Centre of NAS of Belarus' 220072 Minsk Belarus rottkovich@gmail.com., German SA; SSPA 'Scientific-Practical Materials Research Centre of NAS of Belarus' 220072 Minsk Belarus rottkovich@gmail.com.; Belarusian National Technical University 220013 Minsk Belarus., Zhaludkevich AL; SSPA 'Scientific-Practical Materials Research Centre of NAS of Belarus' 220072 Minsk Belarus rottkovich@gmail.com., Vershinina TN; Joint Institute for Nuclear Research 141980 Dubna Russia.; University 'Dubna' 141982 Dubna Russia., Bondaruk AA; SSPA 'Scientific-Practical Materials Research Centre of NAS of Belarus' 220072 Minsk Belarus rottkovich@gmail.com., Razanau IU; SSPA 'Scientific-Practical Materials Research Centre of NAS of Belarus' 220072 Minsk Belarus rottkovich@gmail.com., Dong M; Department of Resources and Environment, School of Metallurgy, Northeastern University Shenyang 110819 Liaoning Province PR China.; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University Hong Kong SAR., Sayyed MI; Department of Physics, Faculty of Science, Isra University 1162 Amman Jordan.; Department of Nuclear Medicine Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman bin Faisal University 31441 Dammam Saudi Arabia., Leonchik SV; SSPA 'Scientific-Practical Materials Research Centre of NAS of Belarus' 220072 Minsk Belarus rottkovich@gmail.com., Zubar T; SSPA 'Scientific-Practical Materials Research Centre of NAS of Belarus' 220072 Minsk Belarus rottkovich@gmail.com., Silibin MV; I.M. Sechenov First Moscow State Medical University Moscow 119435 Russia., Trukhanov SV; SSPA 'Scientific-Practical Materials Research Centre of NAS of Belarus' 220072 Minsk Belarus rottkovich@gmail.com.; Smart Sensors Laboratory, Department of Electronic Materials Technology, National University of Science and Technology MISiS 119049 Moscow Russia., Trukhanov AV; SSPA 'Scientific-Practical Materials Research Centre of NAS of Belarus' 220072 Minsk Belarus rottkovich@gmail.com.; Smart Sensors Laboratory, Department of Electronic Materials Technology, National University of Science and Technology MISiS 119049 Moscow Russia.; L.N. Gumilyov Eurasian National University Astana 010000 Kazakhstan.
Jazyk: angličtina
Zdroj: RSC advances [RSC Adv] 2023 Aug 15; Vol. 13 (35), pp. 24491-24498. Date of Electronic Publication: 2023 Aug 15 (Print Publication: 2023).
DOI: 10.1039/d3ra04509a
Abstrakt: W-Bi 2 O 3 composites were fabricated using the hot isostatic pressing technique for the first time. The duration of the samples sintering was 3 minutes under conditions of high pressure and temperature. The study of microstructural features and chemical composition of sintered samples was carried out using scanning electron microscopy and energy-dispersive X-ray spectroscopy, respectively. The effect of temperature on the quality of the obtained W-Bi 2 O 3 composites is determined. The densest samples were obtained at a pressure of 5 GPa and temperatures of 25 °C and 500 °C, the densities of which were 18.10 and 17.85 g cm -3 , respectively. It is presented that high temperature exposure during sintering adversely affects both the composite density and microstructure due to the redox reaction accompanied by the reduction of Bi and the oxidation of W. The results of the W-Bi 2 O 3 structure study using X-ray diffraction analysis showed that all samples included the main bulk-centered cubic W phase. The presence of the WO 2 phase is noted only when the sintering temperature is increased up to 850 °C, which is confirmed by the appearance of diffraction peaks that correspond to 111 and 22-2 crystallographic planes. The shielding efficiency of the W-Bi 2 O 3 composite against gamma radiation using the Phy-X/PSD software was evaluated. A Co 60 isotope with an energy of 0.826-2.506 MeV was used as a source of gamma radiation. The calculation results were compared with those for Pb and Bi. Key shielding parameters such as the linear attenuation coefficient, half-value layer, tenth-value layer, mean free path, and effective atomic number are determined. The calculation results revealed that the W-Bi 2 O 3 composite surpasses Pb and Bi in its shielding properties, which makes it promising for use as a prospective material for radiation shielding applications.
Competing Interests: The authors declare that they have no conflict of interest.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
Externí odkaz: