A Comprehensive Evaluation of the Attenuation Characteristics of Some Sliding Bearing Alloys under 0.015-15 MeV Gamma-Ray Exposure

Merfat Algethami; Awad A Ibraheem; Shams A M Issa; Huseyin O Tekin; Antoaneta Ene; Maria Pyshkina; Mohamed Rashad; Ghada ALMisned; Hesham M H Zakaly

doi:10.3390/ma15072464

A Comprehensive Evaluation of the Attenuation Characteristics of Some Sliding Bearing Alloys under 0.015-15 MeV Gamma-Ray Exposure

Materials (Basel). 2022 Mar 27;15(7):2464. doi: 10.3390/ma15072464.

Authors

Merfat Algethami¹, Awad A Ibraheem^{2

3}, Shams A M Issa^{3

4}, Huseyin O Tekin^{5

6}, Antoaneta Ene⁷, Maria Pyshkina⁸, Mohamed Rashad^{4

9}, Ghada ALMisned¹⁰, Hesham M H Zakaly^{3

8}

Affiliations

¹ Physics Department, Faculty of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia.
² Physics Department, King Khalid University, P.O.Box 9004, Abha 61421, Saudi Arabia.
³ Physics Department, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt.
⁴ Physics Department, Faculty of Science, University of Tabuk, Tabuk 71451, Saudi Arabia.
⁵ Medical Diagnostic Imaging Department, College of Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates.
⁶ Computer Engineering Department, Faculty of Engineering and Natural Sciences, Istinye University, Istanbul 34396, Turkey.
⁷ INPOLDE Research Center, Department of Chemistry, Physics and Environment, Faculty of Sciences and Environment, Dunarea de Jos University of Galati, 47 Domneasca Street, 800008 Galati, Romania.
⁸ Institute of Physics and Technology, Ural Federal University, 620002 Yekaterinburg, Russia.
⁹ Department of Physics, Faculty of Science, Assiut University, Assiut 71524, Egypt.
¹⁰ Department of Physics, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia.

Abstract

In this study, three different sliding bearing alloy samples were investigated in terms of their performance on attenuation characteristics and behavioral attitudes under 0.015-15 MeV gamma-ray exposure. Accordingly, different types of advanced calculation methods were utilized to calculate the radiation shielding parameters. Next, several gamma-ray shielding parameters and exposure rates in addition to fast neutron removal cross-section were determined. Furthermore, exposure and energy absorption buildup factors were determined by using G-P fitting method. Mass attenuation coefficients (MAC) values were recorded as 2.5246, 2.5703, and 2.5827 (cm²/g) for Alloy1, Alloy2, and Alloy3 samples at 15 MeV photon energy, respectively. At 40 mfp, the highest EBF values were reported as 1,376,274, 1,003,593, and 969,373 for Alloy1, Alloy2, and Alloy3 samples. The results of this extended investigation showed that the Alloy3 sample with the highest Pb reinforcement amount has superior shielding capability among the investigated samples. It can be concluded from the results that substitution of Pb with Bi in the recent alloy structure has a monotonic effect on different types of shielding parameters. Therefore, it can also be concluded that Pb is a remarkable tool for the improvement of the shielding properties of studied alloy structures.

Keywords: EABF; EBF; MicroShield-7.01; alloys; dose rate; gamma-ray.