Impurity determination by thermal analysis: II The melting curve of a quickly frozen sample
article
A temperature-heat content relation is derived for a homogeneous solid solution of a binary system showing a very restricted rate of diffusion in the solid. It is shown experimentally that quickly frozen samples behave like homogeneous solid solutions. According to the new theory the depressions determined on partly molten samples are usually small and depend on the conditions; thus purity determinations based on heating curves of quickly frozen samples are of dubious value. The theory shows that superheating of the solid may occur when a solid solution is melted; this is confirmed expermentally. © 1961.
TNO Identifier
226756
ISSN
0003-2670
Source
Analytica Chimica Acta, 24(C), pp. 41-45.
Pages
41-45
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