Abstract
TREATING molybdenum wires of 0·2 mm. in a stationary manner by passing electric current through them and testing the behaviour of the wires under tensile stress, we have found that specimens heated in nitrogen are of quite a different character from those treated in hydrogen, argon or in vacuo. The yield point (in general, at the yield point of the wire plastic deformation of the metal commences) and the elongation of the wire in particular are very markedly influenced by nitrogen. Fig. 1 shows the load-extension curves of wires treated in nitrogen, the arrows indicating the yield point of the wire.
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References
C. J. Smithells and C. E. Ransley state that nitrogen diffuses through molybdenum (Proc. Roy. Soc. London, 152 (1935).
W. Frankenburger, ” Zum heutigen Stand der Theorie der Ammoniak-Katalyse”. Z. Elektrochem., No. 1, 2, 5 (1933).
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TÚRY, P., KRAUSZ, S. Effect of Molecular Nitrogen on Molybdenum at High Temperatures. Nature 138, 331 (1936). https://doi.org/10.1038/138331a0
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DOI: https://doi.org/10.1038/138331a0
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