High Quality Content by WIKIPEDIA articles! Uranium nitride refers to a family of several ceramic materials: uranium mononitride (UN), uranium sesquinitride (U2N3) and uranium dinitride (UN2). Nitride refers to -3 oxidation state of the nitrogen bound to the uranium. The nitrogen gets its -3 oxidation state from the nature of the triple bond that uranium forms with nitrogen in uranium nitride compounds. The Uranium mononitride has been considered as a potential nuclear fuel for the new Generation IV reactors. It is chosen specifically for its fissionable density and its superior thermal and radiation stability. Uranium nitride (enriched to less than 20% 235U) is the fuel chosen by Hyperion Power Generation to fuel their recently revised Hyperion Power Module