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The paper considers the issues of changing the plasticity characteristics of an experimental intermetallic alloy depending on the aluminum content. Based on the conducted studies (analysis of the structure and determination of mechanical properties), it was shown that plasticity in the experimental alloy can vary almost twice depending on the aluminum content within the alloying interval. В работе рассмотрены вопросы изменения характеристик пластичности опытного интерметаллидного сплава в зависимости от содержания алюминия. На основе проведенных исследований (анализа структуры и определения механических свойств) показано, что относительное удлинение (пластичность) в экспериментальном сплаве может изменяться практически в 2 раза в зависимости от содержания алюминия в пределах интервала легирования.

The effect of the irradiating conditions by high-power pulsed ion beams (HPPIB) on the ablation rate was studied. The conditions of irradiation (ions of carbon and protons, ion energy E=300-600 keV, the ion current density in a pulse j=60-500 A cm" pulse duration т=50-100 ns) were realized in Temp and Vera accelerators. The study of the evaporation kinetics was carried out using targets manufactured from GS26NK nickel super-alloy with NiCrAlY coating and from VT9 and VT18U titanium alloys with ZrN and TiSiB coatings. It is shown that values of the ablation rate achieve 0.04 µm (TiSiB), 0.4 µm (NiCrAlY), and 1 µm (ZrN) during a pulse under the optimal conditions of HPPIB irradiation.

The objective of the present research is development of НРРІВ technology for surface processing of compact components with a complex shape. The surface state of the dental implants from titanium alloys before and after irradiation and long time operation was investigated by Auger electron spectroscopy, scanning electron microscopy, X-ray structural analysis, optical metallography methods. It is shown that the homogeneous state in the surface layer of titanium alloys is formed due to the irradiation (carbon ions and protons, energy of ions is equal to 300 keV, density of ion energy in a pulse achieves 1-5 J/cm^). This state is characterized by a low amount of the impurities and a fine dispersional structure formed as a result of high speed crystallization. Thus, HPPIB irradiation of the dental implants leads to formation of developed microrelief and the decrease of impurities content on the surface. As a result, this treatment allows one to achieve a good cohesion between the implants and a body tissue. The latter allows the conclusion that biocompatibility of the dental titanium implants produced by can be improved using HPPIB treatment.

The influence of high-power pulsed ion-beann (HPPIB) irradiation and various methods of preliminary surface treatment on crater creation was examined with the use of Auger electron spectroscopy, X-ray diffraction analysis, and scanning electron microscopy. The crater distribution density, sizes and shape, along with the microhardness and chemical composition Inside and out side craters were determined. The targets from refractory alloys treated with HPPIBs under the Irradiating conditions (Ion energy - E=300 keV; pulse duration - т=50 ns; the ion current density in a pulse - j=120-220 A/cm^, the number of pulses - n=1-100; Temp accelerator), when crater creation takes place on the surface of refractory alloys, were subjected to the fatigue and corrosion tests. It was determined that crater creation results in the catastrophic fracture of the irradiated samples during a cycle load In air at operating temperature. In this case the nucleation of fracture lies into the locality of formed craters. Furthermore, corrosion tests have shown that titanium alloys Irradiated by HPPIBs under the condition of crater creation were subjected to the pitting corrosion mechanism in seawater at thermocycling from 500 to 20 °C. According to the fatigue and corrosion test results, the adjoinity and dent-shape craters are the most dangerous under the cycle load.