PREPARATION OF COMPOSITE NANOSTRUCTURED POWDERS BASED ON COPPER AND IRON BY MECHANOCHEMICAL SYNTHESIS

ZHORNIK Viktor I., D. Sc. in Eng., Assoc. Prof., Head of the Laboratory of Nanostructured and Superhard Materials, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

It is shown that the formation of a solid solution is observed passing through the stage of formation of the nanocomposite during the mechanochemical synthesis of copper- and iron-based composites with a low-melting component (bismuth, gallium, tin, indium). At the same time, it passes through the formation of intermediate intermetallic compounds in inter-acting metal systems. It is shown that there are significant differences in the kinetics of formation of products of mechanosynthesis for powder mixtures based on iron and copper that can be explained by the difference of evolution of dislocation structure in body-centered cubic (BCC) (iron) and face-centered cubic (FCC) (copper) crystal lattices under plastic deformation shear under high pressure during the early stages of mechanical activation, as well as by the difference of the structure of the forming nonequilibrium boundaries that affects their diffusion permeability and grain boundary self-diffusion coefficient. At the same time, FCC structures are characterized by higher values of these parameters, which in this case contributes to a faster formation of mechanosynthesis products. It was found that the mechanical activation of iron and copper powders with refractory metals (Me – Ti and Zr) allows to produce mechanocomposites Cu/Me and Fe/Me with a homogeneous distribution of the nanosized components (zirconium and titanium) along the boundaries of iron and copper grains without significant interaction between them. Under conditions of intensive mechanical processing, redox reactions occur in copper (iron) – active metal (Zr, Ti) systems with the formation of dispersed oxides of active metals in a matrix of copper and iron. The use of mechanocomposites with zirconium in reactions with copper and iron oxides leads to the formation of copper, iron metals and zirconium oxides, and the use of mechanocomposites with titanium contributes to the formation of complex oxides. Such difference in the kinetics of phase formation during mechanical activation is due to the different solubility of zirconium and titanium in iron and copper matrices.

powder materials, mechanochemical synthesis, copper- and iron-based composites, low-melting components (bismuth, gallium, tin, indium), refractory components (titanium, zirconium)

1. Gorokhovskiy A.V., Arkhipova N.V., Simakov V.V. Kompozitnye nanomaterialy [Composite nanomaterials]. Saratov, Saratovskiy gosudarstvennyy tekhnicheskiy universitet Publ., 2010. 68 p.
2. Chuvildeev V.N., Nokhrin A.V., Pirozhnikova O.E., Gryaznov M. Yu., Lopatin Yu.G., Smirnova E.S. Fizika novykh materialov [Physics of new materials]. Nizhny Novgorod, Nizhegorodskiy gosudarstvennyy universitet Publ., 2010. 105 p.
3. Gusev A.I. Nanomaterialy, nanostruktury, nanotekhnologii [Nanomaterials, nanostructures, nanotechnologies]. Moscow, FIZMATLIT Publ., 2009. 416 p.
4. Avvakumov E.G. Mekhanicheskie metody aktivatsii khimicheskikh protsessov [Mechanical methods of activation of chemical processes]. Novosibirsk, Nauka Publ., 1986. 302 p.
5. Ancharov A.I., et al. Mekhanokompozity – prekursory dlya sozdaniya materialov s novymi svoystvami [Mechanocomposites – precursors for creating materials with new properties]. Novosibirsk, SO RAN Publ., 2010. 424 p.
6. Benjamin J.S. Mechanical alloying. Scientific American, 1976, vol. 234, no. 5, pр. 40–48.
7. Molchanov V.I., Selezneva O.G., Zhirnov E.N. Aktivatsiya mineralov pri izmelchenii [Activation of minerals during grinding]. Moscow, Nedra Publ., 1988. 276 p.
8. Vityaz P.A., Zhornik V.I., Kovaliova S.A., Grigorieva T.I. Poluchenie kompozitsionnykh poroshkov s metallicheskoy matritsey metodom mekhanokhimicheskogo sinteza [Preparation of composite powders with a metal matrix by the method of mechanochemical synthesis]. Poroshkovaya metallurgiya v Belarusi: vyzovy vremeni [Powder metallurgy in Belarus: challenges of the time], 2017, pp. 414–458.
9. Butyagin P.Yu., Boldyrev V.V. Mekhanokhimicheskiy sintez v neorganicheskoy khimii [Mechanochemical synthesis in inorganic chemistry]. Novosibirsk, Nauka Publ., 1991. 55 p.
10. Takacs L. Self-sustaining reactions induced by ball milling. Progress in Materials Science, 2002, vol. 47, pp. 355–414.
11. Cherdyntsev V.V., Pustov L.Yu., Kaloshkin S.D., Tomilin I.A., Shelekhov E.V. Raschet energonapryazhennosti i temperatury v planetarnom mekhanoaktivatore [Calculation of energy intensity and temperature in a planetary mechanical activator]. Materialovedenie [Materials science], 2000, no. 2, pp. 18–23.
12. Boldyrev V.V. Mekhanokhimiya i mekhanicheskaya aktivatsiya tverdykh veshchestv [Mechanochemistry and mechanical activation of solids]. Uspekhi khimii [Advances in chemistry], 2006, vol. 75, no. 3, pp. 203–216.
13. Suryanarayana C. Mechanical alloying and milling. Progress in Materials Science, 2001, vol. 46, no. 1–2, pp. 1–184.
14. Charlot F., Gaffet E., Zeghmati B., Bernard F., Niepce J.C. Mechanically activated synthesis studied by Х-ray diffraction in the Fe-Al system. Materials Science and Engineering, 1999, vol. A262, pp. 279–288.
15. Fecht H.J. Nanostrucrure formation by mechanical attrition. Nanostructured Materials, 1995, vol. 6, pp. 33–42.
16. Chuvildeev V.N. Teoriya neravnovesnykh granits zeren v metallakh i ee prilozheniya dlya opisaniya nano- i mikrokristallicheskikh materialov [Theory of nonequilibrium grain boundaries in metals and its applications to nano- and microcrystalline materials]. Vestnik Nizhegorodskogo universiteta im. N.I. Lobachevskogo [Bulletin of Lobachevsky University of Nizhny Novgorod], 2010, no. 5(2), pp. 124–131.
17. Lyakhov N., Grigorieva T., Barinova A., Lomayeva S., Yelsukov E., Ulyanov A. Nanosized mechanocomposites and solid solution in immiscible metal systems. Journal of Materials Science, 2004, vol. 39, no. 16–17, pр. 5421–5423.
18. Grigorieva T.F., Barinova A.P., Lyakhov N.Z. Mekhanokhimicheskiy sintez v metallicheskikh sistemakh [Mechanochemical synthesis in metal systems]. Novosibirsk, Parallel Publ., 2008. 312 p.
19. Vityaz P.A., Kovaliova S.A., Kiseleva T. Yu., Grigorieva T.F. Kinetika fazoobrazovaniya poroshkovykh kompozitov sistemy Fe–Ga pri mekhanokhimicheskom splavlenii [Kinetics of phase formation of powdered composites of Fe-Ga during mechanоchemical alloying]. Vestsi Natsyyanalnay akademii navuk Belarusi. Seryya fizika-tekhnichnykh navuk [Proceeding of the National Academy of Sciences of Belarus. Physicaltechnical series], 2012, no. 1, pp. 5–11.
20. Vityaz P.A., Zhornik V.I., Kovaliova S.A. Evolyutsiya struktury i fazovogo sostava poroshkov metallicheskikh i metall-oksidnykh sistem v usloviyakh mekhanicheskoy aktivatsii [Evolution of the structure and phase composition of powders of metal and metal-oxide systems under conditions of mechanical activation]. Perspektivnye materialy i tekhnologii [Advanced materials and technologies], Vitebsk, 2015, pp. 89–106.
21. Vityaz P.A., Zhornik V.I., Kovaliova S.A., Grigorieva T.F. Vliyanie rezhimov mekhanoaktivatsii na strukturu i svoystva poroshkov-prekursorov sistemy med–olovo i splavov, spechennykh na ikh osnove [Influence of regimes of mechanical activation on the structure and properties of the powder precursor of the copper-tin and alloys sintered on their basis]. Vestnik Vitebskogo gosudarstvennogo tekhnologicheskogo universiteta [Bulletin of Vitebsk State Technological University], 2014, no. 26, pp. 110–120.
22. Vityaz P.A., Kovaliova S.A., Lobanovskiy L.S., Senyut V.T., Grigorieva T.F., Gamzeleva T.V. Structure and Magnetic Properties of Sintered Alloys Based on Mechanically Activated Fe-Ga Powders. Inorganic Materials: Applied Research, 2014, vol. 5, no. 1, pр. 81–88.
23. Kiseleva T.Yu., Novakova A.A., Letsko A.I., Talako T.L., Kovaleva S.A., Grigorieva T.F., Lyakhov N.Z. Vliyanie lokalnoy struktury mekhanokhimicheski poluchennykh poroshkovykh prekursorov na mikrostrukturu SVS-kompozitov Fe₂O₃/Fe/Zr/ZrO₂ [Mechanochemically synthesized powder precursors local structure influence on the microstructure of SHS Fe₂O₃/Fe/Zr/ZrO₂ composites]. Rossiyskie nanotekhnologii [Russian nanotechnologies], 2015, vol. 10, no. 3–4, pp. 47–53.