Kudin V. The phase composition and properties of Ni-B systems with elements of III-V goups in nickel rich part

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0409U003531

Thesis Registration Form

0409U003531.pdf

Applicant for

Specialization

  • 01.04.07 - Фізика твердого тіла

30-06-2009

Specialized Academic Board

Д 26.001.23

Taras Shevchenko National University of Kyiv

Essay

By method differential-thermal, X-ray and microstructural analyses are investigated alloys of ternary systems Ni-B-C (Ti, Zr, Hf, V, Nb, Ta, Al, Ga, In, Si, Ge, Sn), obtained at a high pressure, 1200 °С and normal pressure, 900 °С. New structure type is established, named Ni20Al3b6 . Phase fields in area of concentration of system Ni-B-C rich on nickel form biphase equilibrium between carbon and borides Ni3B or Ni2B. By method of calorimetry are investigated mixing enthalpies alloys of binary systems Al-B, Ni C(Ga). It is established, that liquid alloys of the studied systems are characterized with large exothermal effects. It is modeling of thermodynamic properties of melts ternary systems Ni-B-C(Mе) from binary boundary systems.

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