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21.
Novel luminescent oxifluoride glasses containing europium and ytterbium ions
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(Science for glass production)
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New oxyfluoride glasses of the SiO 2 - PbO - PbF 2 - CdF 2 system containing europium ions Eu 3+ have been synthesized and ytterbium Yb 3+ , their physicochemical properties, optical absorption ...
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22.
The structure of borosilicate glasses with sodium cation substituted by a cation of alkaline earth metal
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(Science for glass production)
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Influence of substitution of sodium cation by barium and calcium on the structure of sodium borosilicate glass of composition: 0.25 Na 2 O; 0.25 B 2 O 3 ; 0.5SiO 2 . Analysis of the recorded spectra ...
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23.
SYNTHESIS OF GREEN LUMINESCENT BLUE PIGMENTS FROM PHOSPHOGYPSUM
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(Not-set)
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The paper investigates the possibility of obtaining green inorganic pigments with the simultaneous presence of luminescent properties during the heat treatment of chemical industry waste phosphogypsum. ...
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24.
ELECTRICAL PROPERTIES OF OXIDE CERAMICS WITH PYROCHLORE STRUCTURE CONTAINING MANGANESE AND NICKEL
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(Not-set)
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The electrical properties of bidoped oxide pyrochlore Bi6/5Mn1/3Ni1/3Ta4/3O6+? (sp. gr. Fd-3m, a = 10.5038(9) ?), synthesized for the first time by the solid-phase method, were studied. According to scanning ...
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25.
MODIFIED AlF3 AND LiF OXYFLUORIDE LITHIUM-SILICATE SCINTILLATION GLASS FOR NEUTRON DETECTION
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(Not-set)
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Lithium-silicate scintillation glasses doped with rare earth ions are promising materials for neutron detectors. Oxyfluoride glasses, due to modification by fluorine, have improved spectral and mechanical ...
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26.
HETEROVALENT SUBSTITUTION OF ZIRCONIUM IN NASICON SOLID SOLUTION (Na3Zr2Si2РO12)
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(Not-set)
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Fe-substituted ceramic materials of the NASICON family, corresponding to the generally accepted formula Na3+yМ(III)yZr2–ySi2PO12, with a dopant concentration from 5 to 20 mol. % were studied. Doping changes ...
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27.
MECHANISM OF REDUCING AGGLOMERATION OF YAG CERAMIC POWDERS USING AMMONIUM SULFATE DISPERSANT
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(Not-set)
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Yttrium aluminum garnet (YAG) powders were synthesized via chemical precipitation, both with and without the addition of ammonium sulfate as a dispersant. The impact of the dispersant on the particle size ...
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28.
FABRICATION, MICROSTRUCTURE AND PROPERTIES OF COMPOSITE OPTICAL CERAMICS YSAG:Nd3+/YSAG:Sm3+
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(Not-set)
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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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29.
APPLICATION OF POLYVINYLPYRROLIDONE TO IMPROVE THE OPTICAL PROPERTIES OF YAG-BASED CERAMICS
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(Not-set)
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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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30.
ADHESION OF (Ge21Te79)100 – x(AgI)x (x = 30, 40, 50) GLASSES AND MELTS TO QUARTZ GLASS
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(Not-set)
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The effect of the temperature of adhesive contact formation on the interphase boundary strength in the (Ge21Te79)100 – x(AgI)x glass–quartz glass systems has been studied. The values of the contact angles ...
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31.
SYNTHESIS OF MULLITE-SILICA CERAMICS WITH ENHANCED ELECTROPHYSICAL PROPERTIES
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(Not-set)
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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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32.
ASSESSMENT OF THE EFFECT OF THE FLINAK SALT ADDITIVE ON THE PROPERTIES OF BOROPHOSPHATE GLASSES
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(Not-set)
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The paper presents the results of the studies of borophosphate glasses containing an additive of the FLiNaK salt, an eutectic mixture of alkali metal fluorides of the composition 46.5 mol. % LiF – 11.5 ...
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33.
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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(Not-set)
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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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34.
OBTAINING YAG:Ce CERAMICS WITH HIGH LUMINESCENT PROPERTIES
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(Not-set)
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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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35.
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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36.
BENTONITE AS THE BASIS OF A GEOPOLYMER BINDER
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(Not-set)
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... illite, hematite. Thermal analysis curves and the infrared spectrum of bentonite were analyzed. The specific surface area was 58 ± 6 m2/g (BET). On the basis of this bentonite and orthophosphoric acid ...
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37.
PREPARATION OF A COMPOSITE BASED ON HOLLOW GLASS MICROSPHERES MODIFIED WITH SILVER NANOPARTICLES
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(Not-set)
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Composite materials based on K 25 hollow glass microspheres were obtained by modifying them with silver nanoparticles obtained by an environmentally friendly “green” method using an aqueous plant extract ...
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38.
GLASS-LIKE CARBON FROM SUPERCRITICAL FLUID IN THE C–O–H SYSTEM AT TEMPERATURE 800 ?C AND PRESSURE 500…1000 ATM
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(Not-set)
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... X-ray and electron diffraction, infrared and multiwave Raman spectroscopy. According to the features complex and comparison with industrial glassy carbon, the produced carbon material is classified as ...
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39.
FEATURES OF THE SYNTHESIS OF CERAMIC PARANIOBATE OF COMPOSITION YErYbNbO7
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(Not-set)
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The results of the synthesis of complex paraniobate of the composition YErYbNbO7 using various methods are presented. The chemical composition of the final synthesis products is determined. The features ...
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40.
SYNTHESIS, STRUCTURE AND OPTICAL PROPERTIES OF LEAD GALLATE GLASSES
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(Not-set)
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The PbO–Ga2O3 glass-forming system with a lead oxide content of more than 50 mol. % was studied. It was found that the introduction of lead oxide significantly affects the glass structure. Using vibrational ...
