Nuclear Fuel Based on Uranium-Zirconium Carbonitride


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The results of Investigations of the nitrogen and uranium pressure in the system U–Zr–C–N in the temperature range 1873–2073 K and the constructed section of the U–Zr–C–N phase diagram at 1873 K are presented. The behavior of the solid fission products in carbonitride fuel, the interaction of the fuel with a pyrolytic carbon coating, and the behavior of micro fuel elements based on such fuel during high temperature firing and in the presence of a temperature gradient are examined. The conditions for the preparation of fuel compositions of the type uranium carbonitride in a carbide-silicon matrix and some of its physicochemical and mechanical properties are determined. It is noted that there is promise in using fuel compositions and micro fuel elements based on uranium-zirconium carbonitride for high-temperature applications.

Sobre autores

A. Chernikov

Luch Research Institute and Scientific Industrial Association (NII NPO Luch)

Email: j-atomicenergy@yandex.ru
Rússia, Podolsk, Moscow Oblast

V. Zaitsev

Luch Research Institute and Scientific Industrial Association (NII NPO Luch)

Email: j-atomicenergy@yandex.ru
Rússia, Podolsk, Moscow Oblast

Yu. Khromov

Luch Research Institute and Scientific Industrial Association (NII NPO Luch)

Email: j-atomicenergy@yandex.ru
Rússia, Podolsk, Moscow Oblast

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