8 research outputs found

    The statistical theory of monomolecular fullerene film formation on the crystal surface

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    Paper presented at the 9th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Malta, 16-18 July, 2012.The theoretical study of fullerene film production on the crystal faces of (100) type of crystals with sc, bcc, fcc lattices is the subject of this paper. The calculation of equilibrium concentration of fullerenes С60, С70 and its dependence on temperature has been carried out. Investigation of processes adsorption-desorption of fullerenes on the crystal surface and possible special features of these processes has been discussed. The developed statistical theory of the process of fullerenes deposition on the metallic substrate permits to explain and justify the possibility of manifestation of these processes and reveal that passing of each process is defined to a large extent by the character and degree of interaction between fullerenes and atoms of metallic substrate.dc201

    THE EFFECT OF A 3RD COMPONENT IMPURITY-C ON THE HEAT-CAPACITY OF A3B-TYPE ORDERED ALLOYS

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    For the first time theoretical (in terms of the classical theory of ordering) and experimental (with the adiabatic calorimeter method) investigations are made of the effect of a third component impurity C on the heat capacity of A3B‐type ordered alloys with FCC structure. The effect of the impurities Mn, Cr, Mo, or W on the heat capacity of Ni3Fe alloys is analysed as an example. The comparison of the theoretical results with the experimental data shows good qualitative agreement

    IMPURITIES IN NI3FE MAGNETIC-ALLOYS

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    Abstract - The sensing coverage area of surveillance wireless sensor networks, which is determined by applying the Neyman-Pearson detection rule, is considered. Using a graph model for the perimeter, the weakest breach path is found through Dijkstra's shortest path algorithm. The breach probability is a critical parameter for assessing the required number of sensor nodes and the surveillance performance of the network. Analysis indicates that for the Neyman-Pearson detection model, the most significant parameter is the false alarm rate, which is inversely proportional to the breach probability. Furthermore, the width of the fiel

    IMPURITIES IN NI3FE MAGNETIC-ALLOYS

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    An expression for the order–disorder transformation temperature in substitutional alloys of AB3‐type is determined in terms of the classical theory of ordering in alloys with low impurity concentration. The order–disorder transformation temperature is shown to increase at the initial stages of alloying at any relations of ordering energies. The data on theoretical calculations are compared with experimental ones obtained with Ni3Fe alloy doped by different impurities. Much consideration is given to results obtained with Ni3(Fe1−xMnx) alloys. Using neutron diffraction analysis, the lack of Ni24Fe4Mn4 ternary superstructure is shown, and the TK(x) dependence with the extremum at x ≈ 0.4 is obtained from dilatometric and specific heat measuremen
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