Dependence of Interphase Distribution Coefficients on Temperature and Concentration of Components in Double Metal Systems
Abstract
In this work the computation of the equilibrium k0 and limiting k0limB distribution coefficients (DC) of the components according to the state diagrams of binary metal systems Mg–Ag, Ag–Mg, Al– Mg, Mg–Al, Ni–Ga, and Nb–Ge was achieved. These systems belong to systems with limited solubility and for them the approximating equations of the solidus and liquidus lines are obtained in the form of second-order polynomials in the temperature range from the melting point of the main component TMA to the eutectic temperature TEA. A mathematical analysis of the obtained equations for calculating DC is performed. For the first time by calculated and graphical methods the values of the limiting distribution coefficients k0limB for such systems as Mg – Al, Mg – Ag, and Al – Mg were determined. The complete coincidence of the k0limB values obtained by different methods is confirmed. For the Ag–Mg, Nb–Ge and Ni–Ga systems adjusted values of the limiting coefficient were obtained, which are in good agreement with the reference values. The dependences of the equilibrium distribution coefficients on temperature and concentration for the investigated systems are constructed. In the studied temperature range from TMA to TEA, a linear dependence of the distribution coefficients on temperature and concentration is observed.
Downloads
References
L.A. Niselson, and A.G. Yaroshevsky, Межфазные коэффициенты распределения [Interphase distribution coefficients], (Nauka, Moscow, 1992), pp. 399. (in Russian)
V. Phfann, Зонная плавка [Zone melting], (Metallurgizdat, Moscow, 1960), pp. 366. (in Russian)
A.P. Scherban, Journal of V.N. Karazin Kharkiv National University. Series Nuclei, particles, fields, 946(1), 75-80 (2011), http://nuclear.univer.kharkov.ua/lib/946_1(49)_11_p75-80.pdf. (in Russian)
G.P. Kovtun, A.P. Shcherban, and O.A. Datsenko, Коэффициенты распределения примесей в кадмии, цинке и теллуре при кристаллизационной очистке [The distribution coefficients of impurities in cadmium, zinc and tellurium during crystallization treatment], Preprint, NSC KIPT, Kharkov, 2006), pp. 32. (in Russian)
G.P. Kovtun, A.P. Scherban, and O.A. Datsenko, Problems of Atomic Science and Technology, Series ”Vacuum, Pure Materials, Superconductors”, 5(13), 3-6 (2003). (in Russian)
I. Barthel, E. Buring, K. Hein, and L. Kuharzh, Кристаллизация из расплавов [Crystallization from melts], Ref. ed. Translation from German, (Metallurgy, Moscow, 1987), pp. 320. (in Russian)
A.P. Shcherban, and O.A. Datsenko, Problems of Atomic Science and Technology, Series ”Vacuum, Pure Materials, Superconductors”, 1(125), 21-26 (2020).
N.P. Lyakishev, Диаграммы сосотояния T.1 [Phase diagrams Vol. 1], (Mashinostroyeniye, Мoscow, 1996), pp. 991; N.P. Lyakishev, Диаграммы сосотояния T.2 [Phase diagrams Vol. 2], (Mashinostroyeniye, Мoscow, 1997), pp.1023; N.P. Lyakishev, Диаграммы сосотояния T.3 [Phase diagrams Vol. 3], (Mashinostroyeniye, Мoscow, 2001), pp. 872. (in Russian)
L. Kuchař, B. Wozniaková, and J. Drápala, Segregation behavior during the zone melting of refractory metals, Journal of Crystal Growth, 52, 359–366 (1981), https://doi.org/10.1016/0022-0248(81)90219-0.
Copyright (c) 2020 Alexey P. Shcherban, Olga A. Datsenko
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
