Revo S. The structure and properties of nanolayered systems based on transition metals and carbon

Українська версія

Thesis for the degree of Doctor of Science (DSc)

State registration number

0506U000303

Applicant for

Specialization

  • 01.04.07 - Фізика твердого тіла

29-05-2006

Specialized Academic Board

Д 26.001.23

Taras Shevchenko National University of Kyiv

Essay

The work defines mechanisms and laws of formation for nanolamination of composite materials (CMs) with metallic components, which have different solubility, ductility, and volume content in compositions. Revealed physical nature of non-additivity features of nanolaminated CMs in rela-tion to correspondent features of the components. For nanodimensional CMs based on polymeric matrices, a universal character of percolation behavior was determined for electric and mechanical concentration relationships. Proposed empirical formulae, calculations thereby allow to forecast the above-mentioned behavior. Studied percolation processes in nanolaminated systems that contain carbon, and conditions for formation of infinite clusters therein. Analyzed the influence of nanodi-mension and concentration of impurities over heat conduction of diamond structures, and proposed a new mechanism for impurities influence on heat conduction and analytic expression for calcula-tions thereof. In situ methods were used to study the structure of overheated metal melts and alloys, and it was shown that when solidification takes place in flowing condition, heredity of the nan-ofragmental structure is observed in ingots, tapes, coatings.

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