Diffusion of iron in vanadium

Abstract
Measurements of the impurity diffusion of iron in vanadium have been made over the temperature range 938–1815°C by a radioactive tracer technique and electron microprobe analysis on single crystals and polycrystals of vanadium from three different sources. A very slight non-linearity of the Arrhenius plot has been observed above 1550°C. The results are represented by the following relations: between 1200 and 1550°C, D = 2.48+0.59 −0.48 exp (−76113 ± 685/RT); between 1550 and 1815°C, D = 31.7 +55 −20 exp (−85174 ± 3882/RT) Below 1200°C, the radiotracer values are higher than those obtained using the micro-probe. The results are discussed with reference to short-circuit paths and (or) extrinsic impurity contributions.

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