Abstract

The effect of gadolinium on the properties of corrosion-resistant steels used to ensure nuclear safety during the temporary storage, transportation and final disposal of spent nuclear fuel is studied. It is revealed that at present there is great interest in replacing boron with gadolinium for the absorption of thermal neutrons in alloys, which is a global trend. It is established that gadolinium, being a lanthanide, has the largest thermal neutron capture cross section and, despite its high atomic mass, remains the most effective neutron absorber that can potentially ensure the nuclear safety required for temporary storage, transportation and final disposal of spent nuclear fuel. The results of analytical studies can be used as a methodological material for laying of the foundations for the widespread use of gadolinium-containing materials in advanced designs of neutron absorbers, temporary and centralized storage facilities and containers for transporting spent nuclear fuel, as well as in the construction of shields for the protection of nuclear power plants.

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