Southwest State University, Kursk, Russia

E. V. Ageev, Professor of Department “Technology of Materials and Transport”, Head of Scientific Education Center
“Powder Metallurgy and Functional Coatings”, e-mail: ageev_ev@mail.ru
A. S. Pereverzev, Assistant Professor of Department “Technology of Materials and Transport”
B. N. Sabelnikov, Senior Lecturer of Department “Industrial and Civil Engineering”
S. V. Khardikov, Senior Laboratory Assistant of Department “Technology of Materials and Transport”

In the work scientific and applicative principles of LS58-3 (CuZn₃₉Pb₃) grade brass waste processing technology into powders suitable for industrial application are realized. The purpose of the work was to study the physicochemical properties of the lead brass charge obtained by electroerosion in isopropyl alcohol under the optimal dispersion regimes. Grinding of alloy waste to microparticles was carried out on a special patented unit. Optimization of lead brass electrodispersing process was carried out by setting up a full factor experiment. The validation of composition and properties of the obtained powders was carried out using modern intercomplementary methods of physical materials science. It has been experimentally established that the composition, structure and properties of the charge dispersed by electrical erosion of brass LS58-3 are influenced by the chemical composition of the dielectric fluid, as well as dispersion modes. The particles of the resulting charge have a given complex of properties and can be used by various methods of powder metallurgy. The results of the conducted researches allow to recommend the use of the obtained powder as an initial raw material for obtaining alloy blanks and to expand the area of their practical application. Economic efficiency from the use of electroerosion powders is due to the use of waste and low energy-intensive technology for their production.

The work was carried out within the framework of implementation of the development program FSBEI HE “Southwest State University” of the project “Prioritet-2030”.

1. Hasanabadi F. M., Ghaini M. F., Ebrahimnia M., Shahverdi H. R. Production of Amorphous and Nano-Crystalline Iron Based Coatings by Electro-Spark Deposition Process. Surface and Coatings Technology. 2015. Vol. 270. pp. 95–101.
2. Emine Sap. Microstructure and Mechanical Effects of Co–Ti Powder Particles on Cu Matrix Composites. Russian Journal of Non-Ferrous Metals. 2021. Vol. 62, Iss. 1. pp. 107–118.
3. Gordeev Y. I., Abkaryan A. K. Improving Hard-Alloy Strength and Tool Life by Thermomechanical Treatment. Russian Engineering Research. 2013. Vol. 33, Iss. 10. pp. 611–614.
4. Tyurin A., Nagavkin S., Malikov A., Orishich A. Microstructure of WC–Co Hard Alloy Surface After Laser Treatment. Surface Engineering. 2015. Vol. 31, Iss. 1. pp. 74–77.
5. Hao S., Dong C., Xu Y., Zhang Y. Surface Modification of YG6X Hard Alloy by High Current Pulsed Electron Beam Irradiation. Zhenkong Kexue yu Jishu Xuebao/Journal of Vacuum Science and Technology. 2014. Vol. 34, Iss. 1. pp. 16–19.
6. Reva V. P., Onishchenko D. V., Kim V. A., Petrov V. V., Evstigneev A. I. Formation of Hard Alloy VK8 Using Tungsten Carbide Powder Synthesized by Mechanochemical Technology. Refractories and Industrial Ceramics. 2013. Vol. 54, Iss. 4. pp. 295–298.
7. Shekikhachev Yu., Batirov V., Jolabov Yu., Ozrokova T. Increase in Efficiency of Restoration and Hardening of Worn-Out Details of Cars from Copper Alloys by Method of Diffusive Metallization. AgroEcoInfo. 2018. Iss. 4. URL: http://agroecoinfo.narod.ru/journal/STATYI/2018/4/st_412.doc (Accessed: 11.08.2023)
8. Azarov Ya. A., Polekhov I. N., Teplyakov K. S. Modern and Promising Methods of Restoration and Hardening of Machine Parts. Nauka Cherez Prizmu Vremeni. 2018. No. 7. pp. 39–41.
9. Budanov I. A. The Role of the Waste Metal Market in Providing Resources for Metallurgy. Problemy Prognozirovaniya. 2002. Iss. 2. pp. 43–57.
10. Khentov V. Ya., Velykanova L. N., Semchenko V. V., Egorova N. A. Solving the problems of metal recycling based on donor-acceptor systems. Ecology and Industry of Russia. 2009. Iss. 3. pp. 48–49.
11. Budanov I. A. The Raw Factor In Modern Development Of Metallurgy. Scientific Papers IEF RAS. 2008. Vol. 6. pp. 375–397.
12. Bayramov P. K. Obtaining Highly Dispersed Powders of Metals and Their Compounds by Electric Spark Dispersion of Metals: Monograph. Moscow: Izdatelskiy dom MISiS, 2012. 80 p.
13. Shidlovsky A. K., Sherba A. A., Muratov V. A., Karvovskiy V. B. Improving the Quality Indicators and Electroerosive Dispersion of Metals, Taking into Account the Mutual Influence of the Characteristics of the Power Source and the Technological Apparatus. Improvement of Electrical Equipment and Automation of Technological processes of industrial enterprises. Komsomolskon-Amur: KnAPI, 1986. pp. 98–99.

14. Osintsev O. E., Fedorov V. N. Copper and Copper Alloys. Domestic and Foreign Brands: a Reference Guide. 2^nd ed., rev. and exp. Moscow: Innovatsionnoe Mashinostroeniye, 2016. 359 p.
15. Kiryukhantsev-Korneev Ph., Sytchenko A., Sheveyko A., Moskovskikh D., Vorotylo S. Two-Layer Nanocomposite Tic-Based Coatings Produced by a Combination of Pulsed Cathodic Arc Evaporation and Vacuum Electro-Spark Alloying. Materials. 2020. Vol. 13, Iss. 3. 547.
16. Breki A. D., Didenko A. L., Kudryavtsev V. V., Vasilyeva E. S., Tolochko O. V., Kolmakov A. G., Fadin Yu. A., Sergeyev N. N., Gvozdev A. E., Starikov N. E., Provotorov D. A. Synthesis and Tribotechnical Properties of Composite Coatings with PM–DADPE Polyimide Matrix and Fillers of Tungsten Dichalcogenide Nanoparticles Upon Dry Sliding Friction. Inorganic Materials: Applied Research. 2016. Vol. 7, Iss. 4. pp. 542–546.
17. Ageev E. V., Pereverzev A. S. X-ray Diffraction Analysis of Products Sintered from Isostatically Pressed Leaded Bronze Powders. MATEC Web of Conferences. 2019. Vol. 298. 00037.
18. Ageev E. V., Pereverzev A. S., Khardikov S. V. A Study of Porosity of Products Sintered from BrS30 Alloy Electro-Erosion Powders. Materials Science Forum. 2020. Vol. 989. pp. 187–191.
19. Ageev E. V., Ageeva E. V., Gvozdev A. E., Kalinin A. A. Numerical Optimization of the Charge Production Process by Electrodispersion of T5K10 Alloy Waste. Chebyshevskii Sbornik. 2022. Vol. 23, No. 1. pp. 183–196.
20. Ageev E. V., Ageeva A. E. Composition, Structure and Properties of Hard-Alloy Powders Obtained by Electrodispersion of T5K10 Alloy in Water. Metallurgist. 2022. Vol. 66, Nos. 1-2. pp. 146–154.
21. Pat. RU No. 2449859 C2. Int. Cl. B22F 9/14, B23H 1/02, B82Y 40/00. Plant for Producing Nanodisperse Powders from Current Conducting Materials. Ageev E. V., Semenikhin B. A., Latypov R. A., Anikanov V. I. Appl. 08.02.2010, Publ. 10.05.2012, Bull. No. 13.
22. Ageev E. V., Pereverzev A. S. Microstructure and Phase Composition of Electroerosion Materials Based on Bronze Used for the Application of Metallization and Galvanic Coatings. Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques. 2020. Vol. 14, Iss. 6. pp. 1286–1288.