Kozhevnikov O. Hafnium refining by crucibleless zone melting and study of its properties

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0417U001030

Thesis Registration Form

0417U001030.pdf

Applicant for

Specialization

  • 01.04.07 - Фізика твердого тіла

20-12-2016

Specialized Academic Board

Д64.845.01

Essay

The dissertation is devoted to determine the physical laws of the impurity behavior under the hafnium refining by a floating zone melting method, and to receive and investigate the high-purity poly- and monocrystalline hafnium with complex of improved physical and mechanical properties. The calculated and experimental studies of the refining efficiency were performed. The behavior of impurities during heating, zone melting at different rates and in an electric field was studied. The values of the equilibrium and effective distribution coefficients for impurities were determined. A method for producing of high-purity single-crystal samples was developed. The mechanical and physical properties of hafnium samples were studied.

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