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Information × Registration Number 0222U001702, 0119U002204 , R & D reports Title New alloys with amorphous and nanocrystalline phases for solders, used in a wide temperature range popup.stage_title Head Plevachuk Yurii O, Registration Date 31-01-2022 Organization Ivan Franko National University of Lviv popup.description2 Object of research: the relationship between the processes of phase formation, thermodynamic and kinetic conditions of phase stability in metallic multicomponent systems, their relationship with the mechanism of formation of electronic and atomic structure and their impact on the overall characteristics of these systems. The subject of the project research was the influence of metallic and non-metallic micro- and nanoscale impurity elements on the structure and structurally sensitive properties of fast-hardened metal alloys; kinetic and thermodynamic conditions for obtaining these alloys. The aim of the work is to choose the composition and optimal modes of joining materials based on light and refractory alloys, taking into account temperature dependences of elemental and phase composition and physical properties of molten and quenched crystalline and amorphous phases, as well as modifying properties of composite materials. the choice of heat treatment modes and the influence of external factors, in particular, the introduction of metallic and non-metallic nanosized impurities. Research methods - study and analysis of structure, thermophysical and structurally sensitive properties of composite materials (electrical conductivity, thermal conductivity, thermoEMF, viscosity). Strengthening of composite solders based on crystalline Sn – Ag – Cu, Ga – Sn – Zn and amorphous Ni – Si – Al, Fe – Nb – Cu – Si – B base alloys by addition of micro- and nanosized impurities, which reduce brittleness and increase thermal stability of soldered joints. Experimental samples of nanodispersed materials for lead-free solders were created; technological conditions for solder production for possible use in electronic components of military equipment and microelectronics have been improved. All physical quantities are given in the SI system. Product Description popup.authors Mudry Stepan Ivanovych Nykyruy Yuliya S Plevachuk Yuriy O Skliarchuk Vasyl M Tkach Olha R Shtablavyi Ihor I. Yakymovych Andriy Stefanovych popup.nrat_date 2022-03-09 Close