Lavrinenko S. Physical and technological bases of improvement of existing and creation of new alloys and compounds for the nuclear-power plants of a new generation

Object: processes of cooperation of admixtures with a metal at its heating in a high vacuum and in the conditions of action of external factors. The aim: development of physical and technological bases of creation of construction materials on the basis of high-purity metals, their alloys and compounds for the nuclear-power plants of a new generation; the establishment of the physical and technological parameters of change of their properties under action of external factors. Methods: zone melting, electron-beam melting, distillation, sublimation, mass-spectrometry, optical and electron microscopy, X-ray analysis, mechanical and corrosive tests. In work physical and technological conformities to the law of purification are formulated and correlation between partial pressure of residual gases and degree of cleanness of material at his melting in a vacuum is set. Complex technology of refining is created and the high purity metals are got. A nickel alloy of Hastelloy type for work in a molten salt reactorwas obtained. The corrosive tests of alloy in fusions of fluorite of salts of zirconium and sodium in the conditions of irradiation by electrons are conducted, so without the irradiation. Properties of alloy are studied before and after irradiations. Application: the results of researches are applied in GNPP "Zirconium", and also in the NSC "KIPT". Field of application: solid state physics, nuclear energetics