Abstract This paper defines the solutal stability conditions to be satisfied by a metallic alloy in order to avoid transport measurement disturbances induced by natural convection. It would seem that most systems are subjected to convection movements due to their solutal instability and/or to the inevitable radial temperature gradients. In solutal stabilising systems these convection-induced movements become negligible compared to the diffusion-induced movement of species when a sufficient concentration can be obtained (several % for most systems). When these conditions cannot be satisfied, microgravity experiments would appear to be the only means available for obtaining valuable thermodiffusion measurements.
Benefits of microgravity for measuring thermomigration coefficients in liquid metallic alloys
Advances in Space Research ; 8 , 12 ; 305-314
1989-01-01
10 pages
Article (Journal)
Electronic Resource
English
Thermomigration in liquid metallic alloys
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