Nanocomposites and nanomaterials

Thermodynamic and kinetic compatibility of nanoscale nonmetallic particles with metallic materials in casting and welding technologies
Korzhyk V.M., Shcheretskyi V.O., Strohonov D.V., Demianov O.I., Konoreva O.V. 
E.O. Paton Electric Welding Institute the NAS of Ukraine, 1 Kazymyr Malevych St., Kyiv 03150 Ukraine.

The study reveals the effect of non-metallic microstructure modifiers (ZrO2, TiC, WC, TiB2, etc.) on the microstructure and mechanical and functional properties of metallic alloys on the base of aluminum copper and iron. 
The usage of non-metallic nano-scale particles is expedient for effect at the crystallization of a metal melt, within processes of foundry and welding technologies, and formation of protective and functional coatings. The approach includes the usage of mutual theoretical thermodynamic CALPHAD calculations and experimental studies (microstructure and thermal analyzes, mechanical and functional testing) to discover features (atmosphere, time-temperature range, secondary phases, distribution) of nano-scale particles addition effect on the mechanical and functional properties of cast items, metallic coatings, and welded joints.The important thing is discovering the conditions of chemical compatibility of the components of such composite structure, including thermodynamic and kinetic compatibility because of heterogeneity of such material.
The study provides data to predict impact and discover subject of nanoscale particles usage by metallic base and particles type. There is discovered impact of nano-scale additions in cast alloys (aluminum alloys) [1], welding processes (aluminum, steels) [2], protective and functional (frictional) layers (copper alloy layer on a steel base) [3].

1.	V.M. Korzhik, V.O. Shcheretskii, A.A. Chaika, Yi Jianglong Calculated evaluation of application of nano-sized particles in modifying the cast structure of weld metal // The Paton Welding Journal.-2020.-2.-P. 16-21.
2.	L.M. Lobanov, O.M. Syzonenko, V.V. Holovko, P. Tashev, and others Discharge-pulse treatment of the Al – Ti – C system modifier // The Paton Welding Journal.-2021.-5.-P. 24-29.
3.	Zatulovskyi A. S., Shcheretskyi V. O. The technology of production of composite laminates with functional tribotechnical layer strengthened by nanoscale carbides and oxides by furnace-based welding // Processy litʹâ.-2019.-133, N. 4.-P. 35-42.