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Название Comparative analysis of modern methods of production of Al – Zr ligatures
DOI 10.17580/tsm.2021.04.13
Автор Filatov A. A., Suzdaltsev A. V., Zaikov Yu. P.
Информация об авторе

Ural Federal University named after the first President of Russia B.N. Yeltsin, Yekaterinburg, Russia:

A. A. Filatov, Junior Researcher of the Laboratory for Materials and Devices for Environmentally Friendly Energy1, e-mail: fill.romantic@yandex.ru


Institute of High-Temperature Electrochemistry, Ural Branch of the Russian Academy of Sciences, Yekaterinburg, Russia:
A. V. Suzdaltsev, Head of the Laboratory of Radiochemistry, Candidate of Chemical Sciences, e-mail: suzdaltsev_av@mail.ru
Yu. P. Zaikov, Professor, Supervisor, Doctor of Chemical Sciences, e-mail: zaikov@ihte.uran.ru


A brief overview of modern industrial and experimental methods for the synthesis of aluminozirconium ligatures is performed. The basic regularities of the proceeding processes, and also properties of the obtained ligatures are considered, technical and economic indicators and prospects of development of the considered technologies are estimated. The comparative estimation of key parameters of the most promising technologies for industrial application is carried out, the influence of temperature, a mode of synthesis and a kind of initial raw materials on profitability of the process is estimated. Aluminothermic and electrolytic methods of ligature synthesis are considered in more detail, the views of other authors on the kinetics of ongoing processes are taken into account, and an overview of the influence of electrolyte composition and electrolysis mode on the structure and properties of produced alloys is presented. It has been shown that, depending on the method, in a wide temperature range (80 – 1000 oC), Al – Zr master alloy with a zirconium content up to 57 wt.% can be obtained. However, all existing methods for the production of Al – Zr master alloys have significant drawbacks, which lead to the relatively high cost of the master alloys, the presence of hazard waste and low production efficiency. It is concluded that along with the current methods of direct fusion of metals and aluminothermic synthesis, it is promising to obtain ligatures by electrolysis of oxide-fluoride melts KF – NaF – AlF3 using zirconium oxide as the main metalcontaining raw material. The results of experimental testing of a new method for obtaining Al – Zr master alloys via electrolysis of oxide-fluoride melts are presented. It has been established that the developed technology makes it possible to maximize the extraction of zirconium from the oxide, to continuously obtain master alloys with a high zirconium content, excluding the accumulation of unclaimed waste.
The study was performed with the financial support of the Russian Foundation for Basic Research within the research project No. 19-33-90144.

Ключевые слова Aluminum, zirconium, ligature, alloy, electrolysis, melt, electrochemistry
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