Neutron shielding performance of polyethylene-7% B and Al-30 wt% B4C composites fabricated via hot-press sintering

  • Masomeh Ghayebloo 1
  • Zeinab Naghsh Nejad 2
  • Nafiseh Araghian 2
  • Hamzeh Foratirad 3
  • Amir Movafeghi 2
  • 1 Department of Materials Science and Engineering, University of Bonab, P.O. Box 5551761167, Bonab, Iran
  • 2 Reactor and Nuclear Safety Research School, Nuclear Science and Technology Research Institute (NSTRI), Tehran, Iran
  • 3 Leading Material Organization, Nuclear Science and Technology Research Institute (NSTRI), Tehran, Iran

Abstract

The current research aims to investigate the neutron shielding features of polyethylene-7% B  and Al-30 wt% B4C composites that are fabricated via the hot-press sintering. The practical analysis was conducted via Neutron radiography and simulation through MCNP code. The results illustrated the Al-30 wt% B4C with 5 mm thickness has equivalent neutron absorption properties with 14 mm thickness of PE-%7 B. Composites with higher density and homogenous distribution of B4C have a better neutron shield property. Al-30 wt% B4C Composite fabricated at 650 °C has a higher neutron absorption property. Experimental and simulation findings confirmed each other at the lower thicknesses and Al-30 wt% B4C has better neutron shielding than PE-7% B. At thicknesses over 1 cm, the amount of cross-sectional area of polyethylene-7% B  and Al-30 wt% B4C composites are near to each other. By increasing the thicknesses of composites, the relative total dose reduction and the shield properties of composites are enhanced.

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Keywords: Hot-press, Monte Carlo, Neutron radiography, Neutron shielding
Neutron shielding performance of polyethylene-7% B and Al-30 wt% B4C composites fabricated via hot-press sintering
Submitted
2024-09-23
Available online
2024-11-15
How to Cite
Ghayebloo, M., Naghsh Nejad, Z., Araghian, N., Foratirad, H., & Movafeghi, A. (2024). Neutron shielding performance of polyethylene-7% B and Al-30 wt% B4C composites fabricated via hot-press sintering. Synthesis and Sintering, 4(4), 241-247. https://doi.org/10.53063/synsint.2024.44250