Abstract

The corrosion of vanadium in liquid sodium is strongly influenced by the quantity of dissolved oxygen in the liquid metal. The ternary oxide, Na 4VO 4, has been observed on the surface of vanadium after immersion in liquid sodium containing dissolved oxygen at 600°C; it was identified by its X-ray powder-diffraction pattern which was recorded through a matrix of sodium. Vanadium oxides were observed beneath the ternary oxide layer. Measurement of the lattice constant of the vanadium metal enabled the extent of oxygen solid solution to be calculated. A mechanism for the corrosion of vanadium in liquid sodium is postulated.

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