Abstract
This method eliminates some shortcomings encountered with other methods currently used for determination of the diffusion coefficients in melts. There are, with reasonable accuracy, fulfilled the starting and boundary conditions of a diffusion equation, and the diffusion process is not disturbed by melt flowing. This method considers a diffusion source at the boundary of a diffusion range and, when fulfilling certain conditions, both the solution of the diffustion equation and the evaluation of the diffusion coefficients is very simple. The required diffusion source, having a constant power, can be simulated by contacting the saturated gases of a substance, the diffusion of which is being investigated, with melt surface in which the diffusion takes place. The method takes into account application of radionuclides and this article brings about some criteria for application of that method. Simplicity is the main feature of the experimental arrangement.
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This work has been carried out in the scope of the State Research Task III-5-8 “Equilibrium States of Metallurgical Systems”.
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Kubíček, P. Determination of diffusion coefficient in melts by the method of stationary diffusion source. Czech J Phys 23, 1118–1132 (1973). https://doi.org/10.1007/BF01586851
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DOI: https://doi.org/10.1007/BF01586851