St. Petersburg Mining University (St. Petersburg, Russia):

A. G. Syrkov, Dr. Eng., Prof., Dept. of General and Technical Physics, Head of Nanotechnology Center, syrkov_ag@pers.spmi.ru

Belarusian State Technological University (Minsk, Belarus):

N. R. Prokopchuk, Dr. Chem., Corresponding Member of National Academy of Sciences of Belarus, Dept. of Polymer Composite Materials, tnsippm@belstu.by

The process of obtaining of a dispersed product based on metallic iron, containing a protective carbosiloxane film on the surface, has been investigated and implemented. The structure and composition of the metal product are characterized by modern physical methods, including X-ray phase and X-ray fluorescence analysis, XPS spectroscopy. The influence of the synthesis mechanism, the role of the metal-silicon chemical interaction in the surface layer on the water-repellent and anticorrosion properties of the obtained samples is considered. It was found that the heat resistance of the samples in air and their hydrophobicity, depending on the type of the reduced metal, increase in the order: nickel - copper - iron. It was shown that highly hydrophobic iron-based samples can be obtained by reduction from iron (II) oxide and Olenegorsk superconcentrate. The prospects of the synthesized powders and the method of their preparation for the creation of superhydrophobic materials are shown. A method for obtaining a metal product has been theoretically and experimentally substantiated, where the formation of a metal structure and its protection from an aggressive environment are carried out within a given volume on the same technological unit with a flow-through reactor.

1. Bogdandi L., Engel G.-U. Reduction of iron ores. Moscow: Metallurgiya, 1971. 520 p.
2. Popel S. I., Sotnikov A. I., Boronenkov V. N. Theory of metallurgical processes. Moscow: Metallurgiya, 1986. 463 p.
3. Leontiev L. I., Sheshkunov O. Yu., Nekrasov I. V. Analysis, processing and use of industrial wastes of metallurgical production. Kompleksnoe ispolzovanie mineralnogo syrya. 2014. No. 4. pp. 8–25.
4. Tleugabulov S. M., Abikov S. B., Koyshina G. M., Tatybaev M. K. Reduction melting of steel: Basics and prospective development. Metally. 2018. No. 2. pp. 72–77.
5. Sasuntsyan M. E. High-temperature synthesis of the iron monosilicide from production slags. Proc. RA NAS and SEUA. Ser. ТН. 2018. Vol. 71. No. 1. pp. 3–9.
6. Puchkov L. A., Vorobiev A. G., Fedina O. V. “Gornyi Zhurnal” and development of mining in Russia. Gornyi zhurnal. 2015. No. 7. pp. 5–12.
7. Anacleto N. M., Solheim I., Serensen B., Ringdalen E., Ostrovski O. Reduction of chromium oxide and ore by methane-containing gas mixture. Authors’ Revised Draft Infacon XV: International Ferro-Alloys Congress, Southern African Institute of Mining and Metallurgy, Cape Town, 25–28 February 2018. pp. 71–78.
8. Leikola M., Taskinen P., Eric R. H. Reduction of Kemi chromite with methane. Authors’ Revised Draft Infacon XV: International Ferro-Alloys Congress, Southern African Institute of Mining and Metallurgy, Cape Town, 25–28 February 2018. pp. 79–84.
9. Bondarenko B. I. Reduction of metal oxides in complicated gas systems. Kiev: Naukova Dumka, 1980. 385 p.
10. Theory and practice of direct obtaining of iron. Edited by A. I. Manokhin. Moscow: Nauka, 1986. 272 p.
11. Schenck J., Lüngen H. B. Potentials of direct and smelting reduction processes for an efficient application in Europe. Chernye Metally. 2017. No. 2. pp. 25–31.
12. Duarte P., Becerra J. Production of high-carbon directly reduced iron at Tenova Hyl. Chernye Metally. 2016. No. 6. pp. 24–30.
13. Paton B. E. Science. Techniques. Progress. Moscow: Nauka, 1987. 360 p.
14. Kriklivyi D.I., Klimovich N. A. Research of activity of gas reducers and methods of their selection in high-temperature processes. Zhurnal Prikladnoy Khimii. 1991. Vol. 64. No. 11. pp. 2242–2249.
15. Hadzhikov A. S., Harlamin P. S., Hazhinova N. S. Kinetics and mechanism of interaction of iron oxides with methane. Proc. of IX All-Union conference on Kinetics and mechanism of chemical reactions in solids. Chernogolovka. 1986. Vol. 2. pp. 159–160.
16. Fast J. Interaction metals with gases. Vol. 2. Moscow: Metallurgiya, 1975. 351 p.
17. Malakhov A. I., Zhukov A. P. Bases of metal science and theory of corrosion. Moscow: Vysshaya Shkola, 1978. 191 p.
18. Roco M. C., Bainbridge W. S. Societal Implication of Nanoscience and Nanotechnology. Dordrecht: Kluwer Acad. Publ. 2001. 384 p.
19. Yartsev I., Pleskunov I., Syrkov A., Bystrov D. Interrelation of water-repellent and protective properties of coatings on steel and role of nanostructured additives. CIS Iron and Steel Review. 2008. Vol. 3. pp. 26–29.
20. Beloglazov I. N., Syrkov A. G. Nano-structured Metals and Materials: Urgency of Problems and Availability of Investigations. Non-Ferrous Metals. 2006. No. 4. pp. 3–5.
21. Syrkov A. G., Bazhin V. Yu., Mustafaev A. S. Nanotechnology and Nanomaterials: Physical and mineral resources aspects. Saint Petersburg: Polytech-Press, 2019. 244 p.
22. Meretukov M. A., Tsepin M. A., Vorobiev S. A., Syrkov A. G. Clusters, structures, materials of nanosize: innovative and technical prospective. Moscow: Ruda i Metally, 2005. 128 p.
23. Syrkov A. G. Regularities of hydride solid-state synthesis of metallic substances and compounds. Russian Journal of Inorganic Chemistry. 1993. Vol. 38. No. 5. pp. 753–759.
24. Syrkov A. G. Novel ways and fundamentals of metals nanotechnology. Tsvetnye Metally. 2004. No. 4. pp. 67–71.
25. Properties, obtaining and use of refractory compounds. Moscow: Metallurgia, 1986. 928 p.
26. Korshunov V. G., Stefanyuk S. A. Introduction in chlorine metallurgy. Moscow: Metallurgiya, 1970. 343 p.
27. Kosolapova T. Ya. Carbides. Moscow: Metallurgiya, 1968. 299 p.
28. Zhigach A. F., Stasinskiy L. S. Chemistry of hydrides. Moscow: Khimiya, 1969. 676 p.
29. Davydova L. P., Popovskiy V. V., Bulgakov N. N. Study of processes of interaction of methane and ethane with surface of oxide catalysts. Kinetics and Catalysis. 1988. Vol. 29. No. 3. pp. 1162–1168.
30. Ormont B.F. Structure of inorganic substances. Moscow: Nauka, 1959. 968 p.
31. Syrkov A. G., Kabirov V. R., Kavun V. S. Development of solid state hydride synthesis of surface-nanostructured disperse metals. Smart Nanocomposites. 2016. Vol. 7. No. 2. pp. 213–217.
32. Slinyakova I. B., Denisova T. I. Silicon-organic sorbents: obtaining, properties, application. Kiev: Naukova Dumka, 1988. 192 p.
33. Boynovich L. B. Superhydrophobicic coatings – new class of polyfuntional materials. Vestnik RAN. 2013. Vol. 83. No. 1. pp. 10–22.
34. Schellenberger F. How water advances on Superhydrophobic surfaces. Phys. Rev. Letter. 2016. Vol. 116. p. 096101.

35. Roberts M., Makki Ch. Chemistry o metal-gas interface. Moscow: Mir, 1989. 359 p.
36. Pozhidaeva S.D., Ageeva L.S., Ivanov A.M. Comparative analysis of zinc and tin oxidation with acids at room temperatures. Zapiski Gornogo instituta. 2019. Vol. 235. pp. 38–46.
37. Slobodov A. A., Syrkov A. G., Yachmenova L. A., Kushchenko A. N., Prokopchuk N. R., Kavun V. S. Effect of temperature on solid-state hydride metal synthesis according to thermodynamic modeling. Zapiski Gornogo instituta. 2019. Vol. 239. pp. 550–555.
38. Bazhin V. Yu., Vorobiev A. G., Beloglazov I. I. Professor Beloglazov as the founder of the process and plant automation department with Mining Institute. Tsvetnye Metally. 2020. No. 7. pp. 41–48.
39. Sizyakov V. M., Brichkin V. N. About the Role of Hydrated Calcium Carboaluminates in Improving the Technology of Complex Processing of Nephelines. Zapiski Gornogo instituta. 2018. Vol. 231. pp. 292–298.
40. Sizyakov V. M. Chemical and technological regularities of sintering processes of alkali aluminosilicates and hydrochemical processing of cakes. Zapiski Gornogo instituta. 2016. Vol. 217. pp. 102–112.
41. ElDeeb A. B., Brichkin V. N., Povarov V. G., Kurtenkov R. V. The activation effect of carbon during sintering the limestonekaolin mixture. Tsvetnye Metally. 2020. No. 7. pp. 18–25.
42. Petrov G. V., Shneerson Ya. M., Andreev Yu. V. Extraction of platinum metals during processing of chromium ores from dunnite deposits. Zapiski Gornogo instituta. 2018. Vol. 231. pp. 281–286.
43. Aleksandrova T. N., Heide G., Afanasova A. V. Assessment of refractory gold-bearing ores based on integration of thermal analysis data. Zapiski Gornogo instituta. 2019. Vol. 235. pp. 30–37.
44. Aleksandrova T. N., Afanasova A. V., Heide G., Noblich A. Investigation of the carbonaceous component of gold-bearing ores by means of thermal analysis. Innovation-based Development of the Mineral Resources Sector. Challenges and Prospects: proceedings of the 11^th Russian-German Raw Materials Conference, Potsdam, November 7–8, 2018. p. 459.
45. Bazhin V. Yu. 245^th anniversary of Mining University and its contribution to Russia’s non-ferrous metals industry. Tsvetnye Metally. 2018. No. 10. pp. 61–68.
46. Dubovikov O. A. Scientific heritage of academician Nikolay Semenovich Kurnakov. Zapiski Gornogo instituta. 2015. Vol. 215. pp. 65–74.