Shevchenko O. Phase diagrams of the zirconia and hafnia systems with rare earth oxides as physical - chemical basis for designing of new materials.

Українська версія

Thesis for the degree of Doctor of Science (DSc)

State registration number

0507U000680

Thesis Registration Form

0507U000680.pdf

Applicant for

Specialization

  • 02.00.04 - Фізична хімія

29-11-2007

Specialized Academic Board

Д 26. 207. 02

Essay

Systematic investigations of the phase equilibria in the binary and ternary systems of zirconia and hafnia with the rare-earth oxides were carried out for the first time in the wide range of concentrations and temperatures (1600-28000C). The developed complex of high-temperature physical-chemical techniques was used. Common laws of change in the binary phase diagrams type depending on variation of the lanthanide atomic numbers were established. It was found that the topology of ternary state diagrams is determined by the configuration features of the limiting binary systems. The investigation findings of the binary and ternary state diagrams are a scientific foundation for designing of ceramics for industry and medicine

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