Поверхнева дифузія і фазові переходи в адсорбованих плівках міді на грані (112) вольфраму
An experimental study of the vapor-liquid equilibrium in a two-dimensional (2D) adsorbed Cu film on the (112)W face is performed in a wide temperature range for the first time. Critical characteristics are determined. The area of coexistence of phases is established. It is shown that the features of...
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| Date: | 2022 |
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| Main Authors: | , |
| Format: | Article |
| Language: | English Ukrainian |
| Published: |
Publishing house "Academperiodika"
2022
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| Subjects: | |
| Online Access: | https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2021140 |
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| Journal Title: | Ukrainian Journal of Physics |
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Ukrainian Journal of Physics| Summary: | An experimental study of the vapor-liquid equilibrium in a two-dimensional (2D) adsorbed Cu film on the (112)W face is performed in a wide temperature range for the first time. Critical characteristics are determined. The area of coexistence of phases is established. It is shown that the features of the “liquid–gas” phase transition in the 2D system of Cu–(112)W are similar to the transitions in three-dimensional (3D) systems of Rb and Cs. The reasons for the thermodynamic similarity of 2D and 3D metallic systems are discussed. Analytical expressions for the approximation of experimental data are proposed. They determine the limits of the existence of vapor-liquid equilibrium and allow a high-precision extrapolation to the regions of critical and triple points. The coordinates of the points on the liquid and gas branches of the binodals are determined on the basis of the analysis of diffusion-formed concentration profiles. |
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