ISSN:
1434-601X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Earlier experimental work on one-component diffusion of tin into niobium wire or of silicon into vanadium wire has been carried out to prepare diffusion-layers with high-field superconductive characteristics. As a continuation of these investigations, layers have been prepared on niobium and vanadium wire by simultaneous two-component diffusion out of the vapour phase. Here tin or silicon acts as one of the components diffusing into niobium or vanadium respectively, whilst the second component in each case consists of elements chosen from neighbouring regions of the Periodic System. In most cases the introduction of the second component into the diffusion layers results in a decrease of the transition temperature observed for one-component diffusion. It is most probable that this decrease is caused by the high vapour pressure of the second component compared with that of the first, tin or silicon. This would result in diffusion-layers having a greater concentration of the second component. However, it is also to be expected that the rate of diffusion ratio of the two components, which is strongly temperature-dependent, has an important effect on the constitution of the diffusion-layers.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01375177
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