Radiation effects in nanosized clusters

In this communication we present results of computer simulation of radiationenhanced processes in nanosized ferromagnetic clusters under the irradiation by elementary particles and ions. Dynamic defects and possibility of their experimental monitoring are considered. Radiation resistance of nanostructured materials is characterized by the size of instability region for knocked-out atom. Heating and thermoelastic effects on defect structure and materials functionality are discussed. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/2085

Formation of silicon-based nanostructures by compression plasma flows

The use of compression flows (CPF) for the formation of metal and silicide nanostructures for data storage devices, thermoelectric materials and solar cells is presented. The action of CPF with injected metallic powder results in the formation of coatings composed of spherical clusters with complex structure: each submicron cluster (0,1-0,2 μm radius) is formed from a number of nanosized ones (10-25 nm radius). The action of CPF on binary “metal-silicon” systems provides formation of branched silicon dendrites (tip radius ~ 200 nm, primary spacing ~ 1,2 μm); interdendritic space is filled with nanostructured (50-100 nm) “silicide-silicon” and “monosilicide-disilicide” composite due to melting of the surface layer, rapid solidification (~ 10-3 m/s) and constitutional overcooling. Mechanisms of formation of nanostructured composites on silicon surface and in thick surface layers is discussed in terms of order parameter evolution and non-equilibrium solidification models. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/2086

Nanostructured formations and coatings created on the surface of materials exposed to compression plasma flows

The paper presents the results of investigations on changing silicon and aluminium morphology under the action of compression plasma flows generated by the quasi-stationary plasma accelerator (magnetoplasma compressor type). The feasibility of spraying nanostructured metal films by compression flows was demonstrated. The resulting single-layer coating consists of spherical particles measuring 50 to 200 nm. Such particles bonded to each other cover a surface relief including flat areas and regular structures developing during plasma action. The state and composition of a sample surface were studied by SEM- and EXD-methodsПредставлено результати досліджень зміни морфології поверхні пластин кремнію й алюмінію при впливі на них компресійними плазмовими потоками, що генеруються квазістаціонарним плазмовим прискорювачем типу магнітоплазмовий компресор. Продемонстровано можливість нанесення на підкладки наноструктурних металевих покрить за допомогою компресійних потоків.Представлены результаты исследований изменения морфологии поверхности пластин кремния и алюминия при воздействии на них компрессионными плазменными потоками, генерируемыми квазистационарным плазменным ускорителем типа магнитоплазменный компрессор. Продемонстрирована возможность нанесения на подложки наноструктурных металлических покрытий с помощью компрессионных потоков