Thermoelements for thermoelectric coolers from fine-crystalline materials based on antimony and bismuth chalcogenide solid solutions of p- and n-type conductivities, obtained by hot pressing and extrusion from powders, made by melt spinning, were studied. Calculations of modules’ properties were performed in the range of 100−400K, taking into account temperature dependencies of thermoelectric parameters of legs, and the parameters of thermoelectric legs’ matching are estimated. The modules are produced and the experimental and calculated properties comparison is conducted.
Abstract — the counting efficiency of a three-layer diamond detector of gamma radiation based on single-crystal diamond is considered. The paper specifies the of measurements of the absolute effective charge counting rate of a single-layer, two-layer, and three-layer diamond detector are presented. The use of a three-layer structure of a diamond detector, makes it possible to enhance the amplitude of charge output spectrum, to expand the detector dynamic range, as well as to improve the accuracy and information content of radiation monitoring systems.
The governments of the member states of the Eurasian Economic Union should set an ambitious goal of creating a powerful, innovative and competitive union-wide complex of the rare earth industry. Its implementation is ideally suited as one of the "flagship" projects of the EAEU, which are now actively discussing and looked for in the Eurasian Economic Commission (EEC) and in the scientific expert community of the Union countries. Moreover, there are a lot of strong arguments in favor of the success of the development of the union-wide complex of the rare earth industry.
An information environment is presented for managing and researching technological processes in the foundry industry, including process control functions and a control system interface with the ability to visualize data in graphical form.
Dependences of the resistivity of metal-containing nanocomposite films with molybdenum, hafnium, chromium, vanadium, tungsten and tantalum nanoparticles on the content of the introduced metals have been studied. An increase in the conductivity of diamond-like films (DLFs) with an increase in the metal content is found. Depending on the introduced metal, the concentration dependences of the electrical conductivity of DLFs behave differently. The influence of high current densities on the electrical properties of DLFs is studied. High temporal stability of their resistance is revealed. It is found that DLFs have a negative temperature coefficient of resistance. The DLFs with a low content of metal-containing phase and a high resistivity are recommended to be used in temperature sensors, while the low-resistivity DLFs are recommended as resistive materials.