Diffusion of nitrogen in vanadium and niobium |
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Authors: | J Keinonen J Räisänen A Anttila |
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Institution: | (1) Department of Physics, University of Helsinki, SF-00170 Helsinki 17, Finland |
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Abstract: | The diffusion of N in the group VB metals V and Nb has been studied in the previously uninvestigated temperature range 300–500 °C using ion-beam techniques. Diffusion couples were created by ion implantation. The time-dependent diffusion profiles were monitored by the use of the Nuclear Resonance Broadening (NRB) technique. New values for the solubility of N in Nb were obtained. The diffusion rates presented support recent observations of the diffusivity of interstitial impurities in body-centered cubic metals in which positive deviations from Arrhenius behaviour have been seen at high temperatures. |
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Keywords: | 66 30 Jt 61 70 Tm |
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