Bogatyr'ov O. Theory of intermediate phase nucleation at reactive diffusion

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0400U000115

Thesis Registration Form

0400U000115.pdf

Applicant for

Specialization

  • 01.04.07 - Фізика твердого тіла

22-12-1999

Specialized Academic Board

Д 26.168.02

G. V. Kurdyumov IMPh of the N.A.S.U.

Essay

Thermodynamics and kinetics of intermediate phase nucleation at the initial stage of reactive diffusion is considered. Nucleation proceeds in the concentration gradient developing with time in the parent stable or metastable phases. Nucleation problem including shape optimization was solved for homogeneous nucleation in bulk, heterogeneous nucleation at the grainboundaries and the interphase interfaces. Simultaneous influence of stresses and concentration gradients was also considered. Monte-Carlo simulation of nucleation in the concentration gradient confirms the previously obtained results on the platelike nucleus shape.

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