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1.
EFFECT OF TECHNOLOGICAL SYNTHESIS PARAMETERS ON THE STRUCTURE, PHASE COMPOSITION, AND PROPERTIES OF POROUS Al2O3–MgO–SiO2–SiC CERAMICS
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(Not-set)
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Porous ceramic materials based on a coarse Al2O3 filler were synthesized using fine MgO, SiO2, and SiC binders by compaction at pressures of 20…40 MPa followed by sintering in the temperature range of ...
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2.
INFLUENCE OF THE PERCOLATION THRESHOLD ON MICROSTRUCTURAL PROPERTIES OF THIN-FILM INDIUM-TIN OXIDE DURING THERMAL ANNEALING
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(Not-set)
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This article presents a comprehensive study of thin-film coatings based on indium tin oxide. The percolation threshold is established at ?6.8 nm, above which a continuous electrically conductive film is ...
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3.
ELECTRICAL PROPERTIES OF THE OXIDE PYROCHLORE Bi2Cu0.25Ni0.75Ta2O9: A BIPOLAR CONDUCTIVITY MODEL
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(Not-set)
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The electrical properties of the complex oxide Bi2Сu0.25Ni0.75Ta2O9 with a pyrochlore structure (space group Fd-3m, 10.5200(5) ?), synthesized by the solid-phase method, were studied using impedance spectroscopy. ...
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4.
INFLUENCE OF SOLID-STATE SYNTHESIS TEMPERATURE ON THE CRYSTAL STRUCTURE AND ELECTRICAL PROPERTIES OF CaCu3Ti4O12 CERAMICS
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Calcium-copper titanate (CaCu3Ti4O12/CСTO) is a highly demanded material for its colossal dielectric constant and temperature stability. CСTO has many applications as sensors, microwave absorbers, etc. ...
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5.
ELECTRON BEAM SINTERING OF ALUMINA-BASED COMPOSITE CERAMICS WITH COPPER ADDITION IN THE FORE-VACUUM PRESSURE RANGE
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The effect of electron-beam sintering in the fore-vacuum pressure range (8…10 Pa) on the density, structure, and phase composition of the sintered Al2O3–Cu composite with a component mass ratio of 10:1 ...
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6.
CONDUCTIVE PASTES FOR LOW TEMPERATURE CO-FIRED CERAMICS – A REVIEW
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This article presents a review of the available scientific and technical information on conductive metallization pastes used in the production by low-temperature co-fired ceramic (LTCC) multilayer electronic ...
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7.
TESTING POLYMER COATINGS FOR THE PURPOSES OF RESTORING AND REPAIRING CONCRETE STRUCTURES AT THE YAKUTSK CLIMATE STATION
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The adhesion properties of polyurethane- and polyurea-based polymer coatings designed to protect concrete were studied under the climatic conditions of Yakutia. Coated concrete samples were exposed to ...
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8.
STUDY OF DEGRADATION OF LUMINESCENT PROPERTIES OF ERBIUM-DOPED ZINC-TELLURITE GLASSES UNDER TROPICAL CLIMATE CONDITIONS
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Glasses in the TeO2–ZnO system doped with Er3+, Yb3+, Nd3+ were studied. The influence of the synthesis atmosphere on the properties was determined. The photoluminescence intensity, absorption, refractive ...
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9.
BIMETALLIC NANOPARTICLES AgAu, AgRb IN ZINC PHOSPHATE GLASS: FORMATION, STRUCTURE, EFFECT ON OPTICAL CHARACTERISTICS OF GLASS CO-DOPED WITH NEODYMIUM IONS
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Doped zinc-phosphate (ZP) glasses of compositions ZP:Ag:Au and ZP:Ag:Rb were synthesized by the melt quenching method both without and with the use of additional heat post-treatment at T = 500 °C. In the ...
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10.
FABRICATION, MICROSTRUCTURE AND PROPERTIES OF COMPOSITE OPTICAL CERAMICS YSAG:Nd3+/YSAG:Sm3+
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Nanocrystalline powders of yttrium scandium aluminum garnet (YSAG) doped with neodymium Nd3+ and samarium Sm3+ cations were synthesized by chemical precipitation. Their morphology, phase and granulometric ...
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11.
APPLICATION OF POLYVINYLPYRROLIDONE TO IMPROVE THE OPTICAL PROPERTIES OF YAG-BASED CERAMICS
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Yttrium aluminum garnet doped with ytterbium (YAG:Yb) ceramic powders were synthesized using the chemical precipitation method, from which optical ceramic samples were fabricated. Dispersants, namely polyvinylpyrrolidone ...
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12.
SUSTAINABLE DEVELOPMENT OF SHOUSHAN STONE WASTE IN GLAZE MATERIALS: STUDY ON COLORATION MECHANISM AND DURABILITY
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(Not-set)
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This study focuses on the sustainable utilization of shoushan stone mineral processing waste in glaze materials, exploring its synergistic effects on regulating the coloration mechanism and optimizing ...
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13.
OPTICAL PROPERTIES OF HIGH PURITY SYNTHETIC QUARTZ GLASS AFTER HYDROGENATION
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(Not-set)
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This paper presents the results of annealing synthetic quartz glass of high purity at a temperature of 250 ?C and an elevated pressure of 7 MPa in an atmosphere of molecular hydrogen. Annealing under these ...
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14.
SYNTHESIS OF MULLITE-SILICA CERAMICS WITH ENHANCED ELECTROPHYSICAL PROPERTIES
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Presents the results of the synthesis of mullite-silica ceramics with improved electrophysical characteristics based on natural kaolinite raw materials extracted in the Orenburg region. The main attention ...
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15.
SILICAS WITH ORGANOSILSESQUIOXANE FRAGMENTS AS ADSORBENTS FOR SEPARATION OF AIR MACRO COMPONENTS
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Silica adsorbents with organosilsesquioxane fragments containing organic radicals have been obtained for use in the adsorption separation of oxygen-argon mixtures by the PSA method. The sol-gel scheme ...
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16.
ASSESSMENT OF THE EFFECT OF LITHIUM CHLORIDE ON THE PROPERTIES OF BOROPHOSPHATE GLASS DURING THE IMMOBILIZATION OF RADIOACTIVE WASTE FROM PYROCHEMICAL PROCESSING OF SPENT NUCLEAR ...
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The paper presents the results of the studies of a matrix based on borophosphate glass (BFS) with the addition of lithium chloride as a simulator of spent electrolyte, a type of radioactive waste formed ...
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17.
OBTAINING YAG:Ce CERAMICS WITH HIGH LUMINESCENT PROPERTIES
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The precursor powder and luminescent ceramics YAG:Ce based on it were obtained by reverse chemical deposition. The influence of sintering additives (CaO, MgO and TEOS), the concentration of the activator ...
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18.
FEATURES OF GARNET PHASE FORMATION IN THE Y2O3–Lu2O3–Yb2O3–Ee2O3–Al2O3 SYSTEM IN THE SYNTHESIS OF NANOCRYSTALLINE LOW-AGGLOMERATED CERAMIC POWDERS BY COPRECIPITATION METHOD USING AMMONIUM ...
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(Not-set)
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For the first time a series of ceramic powders of the composition (Y1–xLux)3Yb0.15Er0.03Al5O12 (YLuAG) with a garnet structure in which the atomic ratio of Y3+/Lu3+ cations varied from 80/20 to 20/80, ...
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19.
SYNTHESIS OF SILICON OXYCARBIDE COMPOSITE MODIFIED WITH TITANIUM OXIDE
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The work is devoted to the synthesis of silicon oxycarbide composite modified with titanium oxide by joint mechanical treatment of white soot and activated carbon with TiO2 particles deposited on its surface. ...
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20.
STUDY ON THE FIRING TECHNOLOGY AND INFLUENCING FACTORS OF COPPER-BASED GREEN GLAZE IN JUN PORCELAIN IN CERAMIC INDUSTRIAL PRODUCTION
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Cu-series green glaze was prepared using raw materials such as kaolin, feldspar, calcite, talc, limestone, quartz, and copper oxide. This study investigated the effects of formulation composition and preparation ...
