THE URANIUM MONOCARBIDE-URANIUM MONONITRIDE SYSTEM
The system uranium monocarbide--uranium mononitride has been investigated by metalIographic and x-ray diffraction techniques. Alloys were prepared by arcfusion and by soIid-state difiusion. From the lowest temperature investigated, 1200 deg C, upwards, the carbide and nitride form a continuous series of solid solutions. At 1200 deg C the alloys prepared by solid-state diffusion obey Vegard's law but those prepared by fusion deviate from this law in a systematic fashion. The results of x-ray diffraction studies of the diffusion process suggest that homogenization occurs by solution of the carbide in the nitride, but not by the reverse process. Uranium mononitride decomposes when melted in the argon-arc. An atmosphere containing 66% nitrogen does not suppress decomposition entirely. Uranium monocarbide quenched from the melting point has a cell-size --0.1% less than that of the same material annealed at 1200 deg C. (auth)
- Research Organization:
- Atomic Energy Research Establishment, Harwell, Berks, Eng.
- NSA Number:
- NSA-13-020232
- OSTI ID:
- 4205957
- Journal Information:
- J. Less-Common Metals, Vol. Vol: 1; Other Information: Orig. Receipt Date: 31-DEC-59
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
Similar Records
THE PREPARATION OF URANIUM MONOCARBIDE-PLUTONIUM MONOCARBIDE SOLID SOLUTIONS, PLUTONIUM SESQUICARBIDE AND PLUTONIUM MONOCARBIDE
The uranium monocarbide-plutonium monocarbide system