Shielding Effect of Boron Carbide Aluminium Metal Matrix Composite against Gamma and Neutron Radiation

Abstract

In this study, boralyn (boron carbide-aluminum metal matrix composite material -Al/B4C) composite materials were investigated on shielding effect against gamma and neutron radiations. The samples were prepared as 5 wt%, 10 wt%, 15 wt%, and 20 wt% reinforcement content and for each content of material has composed in five different average particle sized (3 µm, 53 µm, 113 µm, 200 µm, and 500 µm). Linear and mass attenuation coefficients were calculated experimentally for each composite material against Cs-137 gamma source. Theoretical mass attenuation coefficients of material were calculated by using XCOM computer code. Then the theoretical results were compared with experimental results. Then, macroscopic cross-section values were calculated experimentally for each composite material against Pu-Be neutron source. As the conclusion of the study, it could be understood that in spite of decrease of the attenuation coefficient against gamma radiation, the adding materials give rise to increase the shielding ability of material against neutron radiation.

Study of the Influence of Cementation Layer Thickness on Properties of Chromium Carbide Obtained by Conversion Treatment

“…TRD coatings must very long process times at high temperatures. For example, a thickness 8 µm chromium carbide layer was obtained on a steel AISI D2 with a treatment at 1030 °C for 4 h [9] and a thickness of 13 µm was obtained with treatment at 1000 °C for 3 h [10]. Indeed, there are very common industrial methods that can be combined in any manner to produce chromium carbide coatings.…”

The Influence of Tool Tilt Angle on 1050 Aluminum Lap Joint in Friction Stir Welding Process

“…1XXX group unalloyed aluminum has been used in architectural trim, heat exchangers, chemical equipment, electric power transmission lines, etc. due to its good corrosion resistance and formability, high conductivity and fairly low strength [1][2][3].…”

Characterization of Nanocrystalline Cu25Mo Electrical Contact Material Synthesized via Ball Milling

“…Composites such as these are made by powder metallurgy (PM) techniques because the individual constituents are immiscible and cannot be made by conventional melt-cast process. Composite materials offer enhanced physical and mechanical properties over many other products [5][6][7][8][9][10].…”