Abstract
The partial molar volumes of hydrogen and deuterium were measured in vanadium, niobium, and tantalum by a differential pressure technique. One-half of an electrolytically charged sample plate was compressed between hardened steel blocks in a hydraulic press. The activity of hydrogen in the high pressure region was raised and caused hydrogen to diffuse into the low pressure region. The partial molar volume was calculated from the ratio of the hydrogen concentrations in the high and low pressure regions of the sample. Small isotope effects were found in the partial molar volume. Hydrogen had the larger volume in niobium and tantalum, but the reverse was true in vanadium.
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Formerly Graduate Student, Department of Materials Science and Engineering, Iowa State University.
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Peterson, D.T., Herro, H.M. Partial molar volumes of hydrogen and deuterium in niobium, vanadium, and tantalum. Metall Trans A 14, 17–21 (1983). https://doi.org/10.1007/BF02643732
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DOI: https://doi.org/10.1007/BF02643732