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Oxidation of Vanadium in the Liquid Oxide Region

Abstract

AT temperatures above the melting point of vanadium pentoxide (675° C), the rate of oxidation of vanadium is extremely rapid and the kinetics have been described1 in terms of the following equation where w is the weight of oxygen absorbed per square cm, t is the duration of oxidation, and a, k and m are constants with m, the rate index, close to 0.7. Although not entirely unknown2,3, such a value is both unusual and difficult to rationalize. It has been considered to be due to a combination of linear and parabolic processes, presupposing similar activation energies unless m is temperature dependent.

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References

  1. Price, W. R., and Stringer, J., J. Less Common Metals, 8, 165 (1965).

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  2. Stringer, J., J. Less Common Metals, 6, 207 (1964).

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  3. Gebhardt, E., and Seghezzi, H. D., Z. Metallkunde, 50, 248 (1959).

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PRICE, W., STRINGER, J. Oxidation of Vanadium in the Liquid Oxide Region. Nature 212, 1356 (1966). https://doi.org/10.1038/2121356a0

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