ABBA Lab

Advanced Biomaterials for Biomedical Applications Lab

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 > One of the biggest challenges of nuclear industries is to fabricate safe, stable and efficient materials for the storage and transportation of spent nuclear fuels (SNFs), these materials are known as neutron shielding and absorbing materials. Recently, Gd has received much attention as a neutron absorbing material in SNF applications owing to its high neutron absorption capability. Herein, we propose novel Fesingle bondGd alloys as binary alloys and master alloys for potential materials in nuclear applications. Fesingle bondGd alloys with 20, 55 and 80 wt% Gd were selected based on the Fesingle bondGd phase diagram. All fabricated Fesingle bondGd alloys had higher hardnesses than pure Fe due to the formed Fesingle bondGd phases, and the Fe-rich phase had a higher hardness than the Gd-rich phase. On the other hand, corrosion resistance of the Fesingle bondGd alloys decreased as the Gd content increased. Satisfactory Gd-based intermetallic dispersion and modifying effects were obtained by casting Fe and stainless-steel alloy with Fesingle bond80Gd. The average intermetallic size in the stainless-steel alloy remarkably decreased with a decrease in the average distance between Gd-based intermetallics. Fesingle bondGd alloys possess requisite hardness, thermal conductivity, and corrosion resistance as well as dispersion ability of intermetallics; hence, they show potential as promising candidates for SNF applications.
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