Electrotransport of carbon, nitrogen and oxygen in vanadium

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Abstract

The electrotransport velocities of carbon, nitrogen and oxygen in vanadium were determined at 1650°, 1735°, and 1825°C. All three solutes were found to migrate in the opposite direction from the electron flow. Diffusion coefficients and effective charges were calculated for these elements at the same temperatures. The electric mobility of nitrogen was shown to be independent of the electric field. The specific resistivity of vanadium was also determined between 950° and 1830°C.

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    The most suitable application is those metals with high melting point and low vapor pressure and high mobility of impurities, especially refractory metals and active metals and some rare earth and actinide metals. Schmidt [93] performed work to determine the electrical transmission speed of C, O, and N in vanadium. Carlso [94] tried to prepare vanadium with the lowest possible interstitial impurity content for characterization studies, and the total content of O, N, C, and H was less than 5 ppm.

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Work was performed in the Ames Laboratory of the U.S. Atomic Energy Commission. Contribution No. 2090.

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