The Experts below are selected from a list of 6120 Experts worldwide ranked by ideXlab platform
R. Kh. Rakhimov - One of the best experts on this subject based on the ideXlab platform.
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Functional Ceramics for reducing friction in metal-metal system of tribopairs
Applied Solar Energy, 2012Co-Authors: R. Kh. Rakhimov, A. I. Yuldashkhodzhaev, V. P. ErmakovAbstract:The paper reports the preliminary results of laboratory-industrial tests of active ceramic additives (ACAs) to lubricant in metal-metal friction pairs in order to elucidate the extent of the decrease in the friction coefficient and the restoration of electromechanical equipment, as well as the extension of its service life and energy saving.
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Application of Functional Ceramics synthesized in a large solar furnace for the synthesis of complex compounds
Applied Solar Energy, 2012Co-Authors: R. Kh. Rakhimov, R. A. Muminov, T. T. RiskievAbstract:In this paper, we considered the peculiarities of Functional Ceramics synthesized in a large solar furnace generating high-density impulses in the far IR region with a steep pulse rise. We showed the effectiveness of pulsed radiation in the IR region in the synthesis technology of complex compounds.
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The use of polymer-ceramic composite films in photoenergy
Applied Solar Energy, 2011Co-Authors: R. Kh. Rakhimov, V. P. Ermakov, M. R. Rakhimov, R. A. Muminov, R. N. Latipov, A. G. RakhimovaAbstract:This work deals with the study of the possible use of film-ceramic composites that are based on Functional Ceramics to increase the efficiency of silicon solar photoconverters (PCs). It is shown that the efficiency of conversion of the visible spectrum of solar radiation can be increased by 25% and more, both due to the conversion of the shortwave spectral range into the range of maximum sensitivity and due to the temperature decrease of silicon solar photoconverters.
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Specifics of Drying Raw Cotton Using Functional Ceramics Synthesized in Large Solar Oven
Applied Solar Energy, 2011Co-Authors: R. Kh. Rakhimov, V. P. Ermakov, M. R. RakhimovAbstract:The effective drying of raw cotton using Functional Ceramics synthesized in a large solar furnace was developed (city of Parkent). Two kinds of Ceramics are used to achieve the established goal. One of these methods ensures the high-quality, effective drying of raw cotton, while the other is used to prevent the formation of peroxile radicals from cotton oil in cotton plant seeds. According to provisional results, the total power costs of using IR drying with Functional Ceramics are nine to ten times lower than in traditional drying, whereas energy costs are more than two to three times lower. Taking into account the relatively low power costs, the considered solution allows one to obtain finished products with no more than 6–7% residual moisture, which makes them better preserved and decreases the risk of self-inflammation.
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Design basis of drying equipment with use of Functional Ceramics: 1. Functional Ceramics selection criterion for drying processes
Applied Solar Energy, 2010Co-Authors: R. Kh. Rakhimov, V. P. ErmakovAbstract:The purpose of the paper is to create a system that allows carrying out effective drying with the greatest quality of the product obtained and high sterility under minimum expenditure of energy and time. In the first part, the principles of Functional Ceramics selection are given. It is shown that the application of the system of converting the primary radiation energy into pulse radiation energy with certain time and spectral responses improves the process efficiency and the base product quality. Ceramics of calculated composition has been synthesized by melting in the Large Solar Furnace (Parkent).
V. P. Ermakov - One of the best experts on this subject based on the ideXlab platform.
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Functional Ceramics for reducing friction in metal-metal system of tribopairs
Applied Solar Energy, 2012Co-Authors: R. Kh. Rakhimov, A. I. Yuldashkhodzhaev, V. P. ErmakovAbstract:The paper reports the preliminary results of laboratory-industrial tests of active ceramic additives (ACAs) to lubricant in metal-metal friction pairs in order to elucidate the extent of the decrease in the friction coefficient and the restoration of electromechanical equipment, as well as the extension of its service life and energy saving.
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The use of polymer-ceramic composite films in photoenergy
Applied Solar Energy, 2011Co-Authors: R. Kh. Rakhimov, V. P. Ermakov, M. R. Rakhimov, R. A. Muminov, R. N. Latipov, A. G. RakhimovaAbstract:This work deals with the study of the possible use of film-ceramic composites that are based on Functional Ceramics to increase the efficiency of silicon solar photoconverters (PCs). It is shown that the efficiency of conversion of the visible spectrum of solar radiation can be increased by 25% and more, both due to the conversion of the shortwave spectral range into the range of maximum sensitivity and due to the temperature decrease of silicon solar photoconverters.
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Specifics of Drying Raw Cotton Using Functional Ceramics Synthesized in Large Solar Oven
Applied Solar Energy, 2011Co-Authors: R. Kh. Rakhimov, V. P. Ermakov, M. R. RakhimovAbstract:The effective drying of raw cotton using Functional Ceramics synthesized in a large solar furnace was developed (city of Parkent). Two kinds of Ceramics are used to achieve the established goal. One of these methods ensures the high-quality, effective drying of raw cotton, while the other is used to prevent the formation of peroxile radicals from cotton oil in cotton plant seeds. According to provisional results, the total power costs of using IR drying with Functional Ceramics are nine to ten times lower than in traditional drying, whereas energy costs are more than two to three times lower. Taking into account the relatively low power costs, the considered solution allows one to obtain finished products with no more than 6–7% residual moisture, which makes them better preserved and decreases the risk of self-inflammation.
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Design basis of drying equipment with use of Functional Ceramics: 1. Functional Ceramics selection criterion for drying processes
Applied Solar Energy, 2010Co-Authors: R. Kh. Rakhimov, V. P. ErmakovAbstract:The purpose of the paper is to create a system that allows carrying out effective drying with the greatest quality of the product obtained and high sterility under minimum expenditure of energy and time. In the first part, the principles of Functional Ceramics selection are given. It is shown that the application of the system of converting the primary radiation energy into pulse radiation energy with certain time and spectral responses improves the process efficiency and the base product quality. Ceramics of calculated composition has been synthesized by melting in the Large Solar Furnace (Parkent).
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Solar heater incorporating polythene film-Ceramics composite material on the basis of iron oxide
Applied Solar Energy, 2010Co-Authors: R. Kh. Rakhimov, V. P. Ermakov, M. P. RakhimovAbstract:A composite material on the basis of a 100-μm-thick polythene film and Functional Ceramics was developed. It was shown that its application for a solar air heater results in a significant temperature increase in comparison with a conventional air polythene film. We investigated the dependences of temperature increase in the chamber when we placed in it areas polymer film composites differing in the polymer-ceramic ratio, as well as the relative values of light transmission in the red zone of the solar radiation spectrum.
Mikio Konishi - One of the best experts on this subject based on the ideXlab platform.
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Applying SiC nanoparticles to Functional Ceramics for semiconductor manufacturing process
Key Engineering Materials, 2009Co-Authors: Mikio KonishiAbstract:SiC nanoparticles are synthesized by r.f. thermal plasma chemical vapour deposition using a chemical system of SiH4-C2H 4-H2-Ar. The average particle size is about 30 nm, and its shape is nearly spherical. The product is -SiC and high pure with total metal impurity of less than 1 ppm. High pure and fully densified SiC body can be made by hot-pressing the sub-micron sized SiC powder added SiC nanoparticles without any sintering additives. They show electrical conductivity, high thermal conductivity and better properties of thermal shock resistance and chemical resistance compared with conventional SiC Ceramics. Furthermore, Al 2O3-SiC nano-composite can be made by using SiC nanoparticles easily. These Functional Ceramics from nanoparticles are the most promising materials for the semiconductor manufacturing process. Up to now, various sintered parts, such as heater, susceptor, pulse heat tool, shower plate and electrical static chuck, etc. have been developed and widely used in the semiconductor industry.
Yuri D Tretyakov - One of the best experts on this subject based on the ideXlab platform.
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Self-organisation processes in the chemistry of materials
Russian Chemical Reviews, 2003Co-Authors: Yuri D TretyakovAbstract:The review concerns conservative and dissipative self-organisation phenomena in those physicochemical systems, whose evolution involves formation of diverse chemically complex products, including Functional Ceramics, supramolecular compounds, and nanocomposites as well as fractal, template and epitaxial structures. It is demonstrated that the use of nonlinear dynamics approaches facilitates organisation of the reaction zone during the synthesis of materials under nonequilibrium conditions in an optimum manner and that biomimetism and biomineralisation processes open up new prospects for materials design. The bibliography includes 308 references.
Sam Solomon - One of the best experts on this subject based on the ideXlab platform.
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Synthesis and characterization of nanocrystalline A6Sb4ZrO18 (A = Ca, Sr and Ba) Functional Ceramics
Solid State Ionics, 2015Co-Authors: Aneesh George, Jijimon K. Thomas, Annamma John, Sam SolomonAbstract:Abstract The cation deficient A 6 Sb 4 ZrO 18 ( A = Ca, Sr and Ba) rhombohedral perovskites are synthesized for the first time by the modified combustion method. The samples show nano size when observed through the transmission electron microscope which is in good agreement with the X-ray diffraction analysis. The tilted octahedral structure of the compounds is confirmed using vibrational spectroscopic analysis. The optical band gap of the samples is between 3.5 and 4 eV. The sintering enhances the grain growth along the c axis and hence rods like grains are observed in the scanning electron microscopic image. The impedance plots can be de-convoluted into three semicircles indicating the contribution of grain, grain boundary and electrode effects. Highest conductivity 15.14 × 10 − 2 S/m is observed for Ba composition at 750 °C.
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synthesis and characterization of nanocrystalline a6sb4zro18 a ca sr and ba Functional Ceramics
Solid State Ionics, 2015Co-Authors: Aneesh George, Jijimon K. Thomas, Annamma John, Sam SolomonAbstract:Abstract The cation deficient A 6 Sb 4 ZrO 18 ( A = Ca, Sr and Ba) rhombohedral perovskites are synthesized for the first time by the modified combustion method. The samples show nano size when observed through the transmission electron microscope which is in good agreement with the X-ray diffraction analysis. The tilted octahedral structure of the compounds is confirmed using vibrational spectroscopic analysis. The optical band gap of the samples is between 3.5 and 4 eV. The sintering enhances the grain growth along the c axis and hence rods like grains are observed in the scanning electron microscopic image. The impedance plots can be de-convoluted into three semicircles indicating the contribution of grain, grain boundary and electrode effects. Highest conductivity 15.14 × 10 − 2 S/m is observed for Ba composition at 750 °C.
