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Moscow, Russia

Pavlov Y.S.,Russian Academy of Sciences | Lagov P.B.,NUST MISiS
Proceedings of the European Conference on Radiation and its Effects on Components and Systems, RADECS | Year: 2015

Electron accelerator equipped with injection system and magnetic buncher to generate picoseconds pulsed beams (50 ps, 150 A, 10 MeV) prospective for radiation hardness investigation and pulsed detectors characterization is represented. © 2015 IEEE. Source

Rodin A.,NUST MISiS | Khairullin A.,NUST MISiS
Defect and Diffusion Forum | Year: 2015

The influence of Co as an alloying element on grain boundary diffusion (GBD) in Cu attracts particular interest due to anomalous GBD of Co in Cu. Ni as a neutral to Co and Cu element was chosen for GBD study. The triple products of Ni GBD in Cu and Cu-Co alloys (with concentration up to 2.9 wt. %) were determined in temperature range 500-700°C by X-ray microprobe analysis. It was shown, that in spite of some scattering the triple product does not depend on Co concentration at all temperatures of experiments. From the obtained results it follows that Co does not change the GB structure. © (2015) Trans Tech Publications, Switzerland. Source

Shekhirev D.V.,National University of Science and Technology "MISIS" | Smaylova A.B.,NUST MISiS | Dumov A.M.,NUST MISiS
Obogashchenie Rud | Year: 2016

Difficultly-treated ores form the basis of the Russian nonferrous and precious metals mineral resources base. In particular, many of the promising lead-zinc deposits are represented by high-sulfur finely-disseminated difficultly-treated ores. Development of technologies for difficultlytreated ores processing is one of the priority tasks for the short-term exploratory research works. In most cases rebellious ores are distinguished not only by fine dissemination, but also by closeness of separated minerals flotation properties. The only way to process this type of ores is to apply combination technologies, separating part of metals into a rebellious bulk product to be subsequently treated at hydrometallurgical process stage. Owing to complexity of combination technologies, a necessity of their application must be based on ore dressability analysis in relation to its material composition. By way of example in this work, a processing method is proposed for difficultly-treated lead-zinc ore and its dressability is determined by means of apparatus quantitative mineralogical analysis. An individual calculation algorithm was developed for maximum dressability curves with respect of consecutive separation of two concentrates, complying with certain requirements to composition of mineral particles separated into concentrates. With regard to the studied rebellious ore in question, it is shown that the achieved liberation of the minerals theoretically provides for satisfactory metallurgical results that are significantly higher than the experimentally achieved indices. A new method of calculation is proposed for determination of two types of recovery parameters for minerals, associated with different sorts of particles, differing in size and presence of intergrowths. Higher recoveries of pyrite and sphalerite into rougher lead concentrate and pyrite into rougher zinc concentrate are demonstrated for 10 to 90 microns size fraction as liberated particles, if compared with intergrowths and particles smaller than 10 microns. Exactly these flotoactive forms of pyrite and sphalerite lead to formation of rebellious lead-zinc product to be subjected to hydrometallurgical process stage. Source

Rodin A.,NUST MISiS | Prokoshkina D.,University of Munster | Itckovitch A.,NUST MISiS | Dolgopolov N.,NUST MISiS
Defect and Diffusion Forum | Year: 2015

It is generally agreed that during diffusion process between two phases e.g. matrix/diffusant layer the thermodynamic equilibrium state is fulfilled and the supersaturated solid solutions can not formed by diffusion. Nevertheless, in many cases the formation of equilibrium phases does not occur due to kinetic and other reasons, and metastable phases can be formed. The analysis of the concentration profiles for bulk diffusion obtained at low temperatures consistent with B-regime for grain boundary diffusion in systems Cu/Al, Fe and Co/Cu is performed. It is shown that in these systems the supersaturated solutions are formed and the extent of supersaturation is the more as the diffusion temperature is lower. The concentration of diffusant may be 5-10-times greater than solubility according to phase diagram. © (2015) Trans Tech Publications, Switzerland. Source

Saranin D.,NUST MISiS | Orlova M.,NUST MISiS | Didenko S.,NUST MISiS | Rabinovich O.,NUST MISiS | Kryukov A.,Mendeleev University of Chemical Technology
Materials Science Forum | Year: 2016

This article presents the results of research output voltage characteristics of solar cells on an organic basis with the P3HT: PCBM system usage. There were produced organic solar cells in a coating in air, current-voltage characteristics were measured. It was determined the characteristic influence of a substrate cleaning and annealing temperature of layers applied on fill factor and conversion efficiency. © 2016 Trans Tech Publications, Switzerland. Source

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