National Center on complex processing of mineral raw materials of the Republic of Kazakhstan, Almaty, Kazakhstan:

F. R. Kapsalamova, Senior Researcher, e-mail: faridakapsalamova@gmail.com

F. A. Berdikulova, Director of the Department for Coordination of Science and Technology Projects and Programmes, Candidate of Technical Sciences, e-mail: pheruza_b@mail.ru

Institute of Metallurgy at the Ural Branch of the Russian Academy of Sciences, Yekaterinburg, Russia¹ ; Ural State Mining University, Yekaterinburg, Russia²:
S. A. Krasikov, Principal Researcher¹, Professor at the Department of Chemistry², Doctor of Technical Sciences, e-mail: sankr@mail.ru

Institute of Metallurgy at the Ural Branch of the Russian Academy of Sciences, Yekaterinburg, Russia:
E. M. Zhilina, Senior Researcher, Candidate of Chemical Sciences, e-mail: ezhilina@bk.ru

This paper describes a physico-chemical analysis of phase transformations at the Fe – C alloy — Fe – Ni – Cr – Cu – Si – B – C alloy interface, which is of interest in term of a promising metallothermic process that enables to obtain wear-resistant ultradispersed coatings for strengthening and restoring wornout parts of equipment. A Fe – Ni – Cr – Cu – Si – B – C powder, obtained by mechanochemical alloying, was gas-flame sprayed on an iron-carbon substrate. The aim of this study was to understand the physical and chemical transformations that occur when forming a wear-resistant coating aimed at strengthening and restoring worn-out parts of equipment. A propane-oxygen torch was used to perform gas-flame surfacing of a sample steel grade 45 substrate. An X-ray phase analysis was carried out, and images were produced on a scanning electron microscope when examining the physico-chemical properties of the Fe – C alloy — Fe – Ni – Cr – Cu – Si – B – C alloy interface. The results show that the Fe – C alloy — Fe – Ni – Cr – Cu – Si – B – C alloy interface consists of multiple phases, including intermediate phases, intermetallic compounds (CrNi₃, Fe_10.8Ni, etc.), carbides (Fe₃C, (Cr, Fe)₂₃C₆, etc.), borides (Ni₂B, Cr₅B₃, etc.), silicides (FeSi₂, Cr₅Si₃, etc.). Such phase formation during gas-flame surfacing can be primarily attributed to complex processes of chemical interaction, diffusion and structure formation that occur due to temperature impact and are accompanied by an exothermic effect. The SEM images illustrate a non-uniform distribution of alloying elements between ultradispersed phases.
This research was carried out under a governmental assignment by the Institute of Metallurgy at the Ural Branch of the Russian Academy of Sciences; Subject Registration No.: 122020100404-2.

1. Chawla K. K. Metal matrix composites. Composite Materials: Science and Engineering. New York : Springer Science + Business Media, 2012. DOI: 10.1007/978-0-387-74365-3_6
2. Mukhambetgaliyev Y., Baisanov S., Zharmenov A., Khayn Y. et al. Industrial smelting tests and organization of production of ferrosilicon aluminum (FSA) in Kazakhstan. Metalurgija. 2020. Vol. 59, Iss. 1. pp. 109–112.
3. Terlikbaeva A. Z., Alimzhanova A. M., Shayakhmetova R. A. et al. Investigation of the effect of aluminum on the phase composition of Ti – Al – Nb – Mo gamma alloys. Physics of Metals and Metallography. 2017. No. 118. pp. 1097–1104. DOI: 10.1134/S0031918X17110163
4. Kavalla R., Bazhin V. Yu. Forming of structure and properties of sheet strips from magnesium alloys in the conditions of twin roll casting process. Journal of Mining Institute. 2015. Vol. 214. p. 33.
5. Sharma A., Lee H., Ahn B. Effect of additive elements (x = Cr, Mn, Zn, Sn) on the phase evolution and thermodynamic complexity of AlCuSiFe-x high entropy alloys fabricated via powder metallurgy. Metals and Materials International. 2022. Vol. 28. pp. 2216–2224. DOI: 10.1007/s12540-021-01125-0
6. Murty B. S., Yeh J.-W., Ranganathan S. High entropy alloys. 1st ed. London : Butterworth-Heinemann, 2014.
7. Syrkov A. G., Kushchenko A. N., Silivanov M. O., Taraban V. V. Nanostructured regulation of the surface properties and hydrophobicity of nickel and iron by solid-state reduction and modifying methods. Tsvetnye Metally. 2022. No. 5. pp. 54–59.
8. Bazhin V. Y., Issa B. Influence of heat treatment on the microstructure of steel coils of a heating tub furnace. Journal of Mining Institute. 2021. Vol. 249. pp. 393–400.
9. Kolesnichenko S. V., Afanasieva O. V. Theoretical aspects of the technical level estimation of electrical engineering complexes. Journal of Mining Institute. 2018. Vol. 230. p. 167. DOI: 10.25515/pmi.2018.2.167
10. Kolesnichenko S. V. Research approaches for assessing the quality of complex engineering systems at various stages of development. Journal of Mining Institute. 2014. Vol. 208. pp. 244-244.
11. Vologzhanina S. A., Igolkin A. F., Zhuchkov D. V. Understanding the relationship between the chemical composition of welding materials and the properties of a weld joint. Scientific Journal NRU ITMO. Series “Processes and Food Production Equipment”. 2014. No. 2. p. 6.
12. Vologzhanina S. A., Igolkin A. F., Petkova A. P. Understanding the effect of low temperatures and strains on the properties of austenitic steel 12Kh18N10T. Global Energy. 2019. Vol. 25, No. 4. pp. 83–93.
13. Krasikov S. A., Zhilina E. M., Pichkaleva O. A. et al. Effect of the intermetallic compound composition of the character of interphase interactions during aluminothermic coreduction of titanium, nickel, and molybdenum from their oxides. Russian Metallurgy (Metally). 2016. No. 8. pp. 771–775.
14. Litvinova T. E. et al. The Gibbs energy of carboxylates of lanthanum and yttrium forming during naphthenic acid extraction. Vestnik of Saint Petersburg University. Physics and Chemistry. 2011. No. 2. pp. 134–141.
15. Prokopchuk N. R. et al. Enhancing the mechanical properties of epoxy coatings on steel with nanoparticles of different nature. Nanophysics & Nanomaterials. Saint Petersburg, 23–24 November 2022. pp. 229–233.
16. Hannora A., Mamaeva A., Mofa N., Aknazarov S. et al. Formation of hydroxyapatite coating by mechanical alloying method. Eurasian Chemico-Technological Journal. 2009. Vol. 11, Iss. 1. pp. 37–43.
17. GOST 5583–78. Technical and medical oxygen gas. Specifications. Introduced: 01.01.1980.
18. GOST 20448–80. Fuel liquefied hydrocarbon gases for domestic use. Specifications. Introduced: 09.06.1980.
19. GOST 1050–88. Gauged bars with special surface finish made of carbon quality structural steel. Introduced: 01.01.1991.
20. Zubov V. P., Golubev D. D. Prospects for the use of modern technological solutions in the flat-lying coal seams development, taking into account the dander of the formation of the places of its spontaneous combustion. Journal of Mining Institute. 2021. Vol. 250. pp. 534–541. DOI: 10.31897/PMI.2021.4.6
21. Schmidt E. D., Damm E. B., Sridhar S. A study of diffusion- and interface-controlled migration of the austenite/ferrite front during austenitization of a case-hardenable alloy steel. Metallurgical and Materials Transactions A. 2007. Vol. 38. pp. 698–715.
22. Boulos M. I., Fauchais P. L., J. Heberlein V. R. Thermal spray fundamentals : From Powder to Part. Springer, 2021. p. 1136. DOI: 10.1007/978-3-030-70672-2
23. Yurkova A. I., Cherniavskya V. V., Bolbutb V., Krügerbc M. et al. Structure formation and mechanical properties of the high-entropy AlCuNiFeCr alloy prepared by mechanical alloying and spark plasma sintering. Journal of Alloys and Compounds. 2019. Vol. 786. pp. 139–148. DOI: 10.1016/j.jallcom.2019.01.341
24. Tolokonnikovа V., Baisanov S., Narikbayeva G., Korsukova I. Assessment of dissociation rate of FeCr₂O₄ using the Bjerrum-Guggenheim coefficient. Metalurgija. 2021. Vol. 60, No. 3-4. pp. 303–305.
25. Longa Y., Takemoto M. Laser processing of high-chromium nickel-chromium coatings deposited by various thermal spraying methods. Corrosion. 1994. Vol. 11, No. 50. pp. 827–837.
26. Atkinson H. V. A review of the role of short-circuit diffusion in the oxidation of nickel, chromium, and nickel-chromium alloys. Oxidation of Metals. 1985. Vol. 3, No. 24. pp. 177–197.
27. Dong X. Y., Luo X. T., Zhang S. L. et al. A Novel strategy for depositing dense self-fluxing alloy coatings with sufficiently bonded splats by one-step atmospheric plasma spraying. Journal of Thermal Spray Technology. 2020. No. 29. pp. 173–184. DOI: 10.1007/s11666-019-00943-4
28. Tului M., Giambi B., Lionetti S., Pulci G. et al. Silicon carbide based plasma sprayed coatings. Surface and Coatings Technology. 2012. Vol. 207. pp. 182–189. DOI: 10.1016/j.surfcoat.2012.06.062
29. Zimoglyadova T. A., Saage H., Pasichnik V. A. et al. Structure and properties of functional self-fluxing nickel-containing coatings obtained by nonvacuum electron-beam cladding. Metal Science and Heat Treatment. 2019. No. 60. pp. 633–640. DOI: 10.1007/s11041-019-00330-4
30. Xin Tong, Fu-hai Li, Min Liu, Ming-jiang Dai et al. Thermal fatigue resistance of non-smooth cast iron treated by laser cladding with different selffluxing alloys. Optics & Laser Technology. 2010. Vol. 42, Iss. 7. pp. 1154–1161. DOI: 10.1016/j.optlastec.2010.03.001