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.


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    Title :

    Benefits of microgravity for measuring thermomigration coefficients in liquid metallic alloys


    Contributors:

    Published in:

    Advances in Space Research ; 8 , 12 ; 305-314


    Publication date :

    1989-01-01


    Size :

    10 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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