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А. И. Устинов, В. С. Скородзиевский*, Е. В. Фесюн, В. Н. Тараненко
«Структура и механические свойства наноструктурированных вакуумных конденсатов никеля»
PACS numbers: 62.20.Qp, 62.23.Pq, 62.25.-g, 62.40.+i, 68.37.Hk, 81.07.Bc, 81.15.Ef
Influence of micro- and substructures of vacuum condensates of a nickel on their mechanical properties under static (micro-hardness) and dynamic (dissipation properties) loadings is in-vestigated. Vacuum condensates with different characteristics of micro- and substructures are fabricated at variation of a substrate temperature in a range 180–800?С. As shown, the reduction of the size of grains of vacuum condensates fabricated at low temperatures of a substrate is accompanied by formation of nanosize fragments divided by small-angle boundaries within them. Vacuum condensates with nanofragmented grains are characterized by the raised level of strength in comparison with coarse-grained structures of a nickel. Nickel transition into a nanostructured state is accompanied by qualitative changes of its dissipation properties: the amplitude dependence of decrement of vibrations sharply decreases, and its dependence on tempera-ture increases.