Smirnova T. Study of the regularities of diamond synthesis in the systems containing nontraditional solvents of carbon on the zinc basis

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0401U002001

Thesis Registration Form

0401U002001.pdf

Applicant for

Specialization

  • 05.02.01 - Матеріалознавство

21-06-2001

Specialized Academic Board

Д 26.230.01

Essay

The dissertation deals with the diamond synthesis in the Zn-C and Zn-Mg-C systems. The melting diagram of the Zn-C system at 7.7 GPa is first constructed and phase equilibria in the Zn-Mg-C system at 7.7 GPa are first determined. It has been shown that diamond synthesis realises at the temperature above 1800 C (the melting temperature of the peritectic L+ZnC2) in the Zn-C system. Tmin. of diamond synthesis is 1350 C (p=7,7 GPa) in the Zn-Mg-C system at eutectic ratio of components (70 at.% Zn - 15 at.% Mg - 15 at.% C). The recommendations for control the degree of diamond-graphite transition, the electric resistance, the habit of crystalls are worked out

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