Kopan' T. Nanoparticles and Composit Material on Nanocrystal Matrix and Silicon Carbide Filaments.

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0499U000978

Thesis Registration Form

0499U000978.pdf

Applicant for

Specialization

  • 01.04.07 - Фізика твердого тіла

26-04-1999

Specialized Academic Board

Д26.001.23

Essay

The thesis is devoted to production of nanoparticles Ti, Si, SiC, to research of their some properties and mechanical properties of a composite material on nanocrystal matrix and silicon carbide filaments (CM SiC/SiC). It is shown, that nanoparticles are formatted by simultaneous condensation of a solid material vapour and the vapour of vacuum silicone oil ВЖК-94 on one base. It is proved, that nanoparticles evaporate from a source (a suspension, heap of a powder) as whole (as Brownian particles). The intensity of evaporation depends on the particle size, adhesion forces, temperature, and gradient of an electrical field. It is established, that the CM SiC/SiC has significant area of plasticity (~ 0,2 % at 1473-1500K and velocity of tension of 0,02 mm/sec) before destruction and large brake point on bending (640 + 120 МPа after 100 termocycles from 1500 to 373 K).

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