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首页> 外文期刊>Journal of thermal analysis and calorimetry >Theory of emanation thermal analysis XI. Radon diffusion as the probe of microstructure changes in solids
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Theory of emanation thermal analysis XI. Radon diffusion as the probe of microstructure changes in solids

机译：Theory of emanation thermal analysis XI. Radon diffusion as the probe of microstructure changes in solids

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摘要

The theoretical background for the use of radon diffusion as a probe of microstructure changes in solids is given. The high sensitivity of the emanation thermal analysis (ETA) in the study of solid state processes especially interactions taking place on surfaces and in the near surface layers is described. The increasing sensitivity of the method towards bulk processes with rising temperature is theoretically shown. The background considerations to be used in the mathematical modeling of temperature dependences of the radon release from solids on heating (i.e. simulated ETA curves) are presented. Various models for radon diffusion and various functions describing the annealing of structure irregularities, which served as diffusion paths for rdon, were used in the modeling. It was shown, that ETA is able to characterize microstructure changes in the surface layers of the thickness from several nanometers to several micrometers.

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