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1.
Oxide glass with 0,67 nm minimum distance between rare-earth activators
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(At the enterprises and institutes)
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It is shown that the glasses of the system (Ln x Y 1-x ) 2 O 3 - Al 2 O 3 - B 2 O 3 are a promising matrix for obtaining highly doped active media with low-efficiency concentration quenching ...
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2.
ULTRA-SOFT X-RAY SPECTROSCOPY STUDY OF CHROMIUM-DOPED TITANIUM CALCIUM-COPPER CaCu3Ti4O12
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(Not-set)
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A series of chromium-containing solid solutions CaCu3Ti4 – 4хСr4хO12 – ? (sp. gr. Im3) were obtained by the solid-phase synthesis method. The unit cell parameter of the solid solutions changed insignificantly ...
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3.
PHASE FORMATION OF NEW PYROCHLORE TYPE CERAMICS Bi2.7Zn0.46Ni0.70Sb2O10 + ?
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(Not-set)
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The process of phase formation of new antimony pyrochlore (sp. gr. Fd-3m) Bi2.7Zn0.46Ni0.70Sb2O10 + ? during solid-phase synthesis from oxide precursors was studied. The process of solid-phase synthesis ...
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4.
LOCAL ATOMIC STRUCTURE OF NEODYMIUM IONS IN ALUMOBORATE AND ZINCPHOSPHATE GLASSES DETERMINED BY EXAFS
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(Not-set)
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... accuracy of the determined parameters of the local atomic structure. We found that the neodymium atom in alumuborate glass is surrounded, in average, by ~9.6 oxygen atoms at a distance of ~2.4 ?, and in ...
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5.
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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6.
X-RAY PHOTOELECTRON SPECTROSCOPY OF Bi2Ni1/2Co1/2Ta2O9 ± ? OXIDE CERAMICS
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(Not-set)
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Cubic pyrochlore of the composition Bi2Ni1/2Co1/2Ta2O9 ± ? (sp. gr. Fd-3m, a = 10.5261(8) ?) was synthesized for the first time from the corresponding oxides by the solid-phase reaction method. The complex ...
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7.
SYNTHESIS OF Zn AND Mn CODOPED BISMUTH TANTALATE PYROCHLORE-TYPE CERAMICS
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(Not-set)
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Ceramic samples Bi2ZnxMn1–xTa2O9.5–? were synthesized for the first time using the solid-phase synthesis method. It was established that the samples contain the main phase of cubic pyrochlore (sp. gr. ...
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8.
SYNTHESIS OF NANOCRYSTALINE Bi2Cr0.5Co0.5Nb2O9+? CERAMICS
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(Not-set)
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It has been shown that the modified sol-gel method (method Pechini) successfully synthesizes multielement oxides based on bismuth niobate, crystallizing in the pyrochlore structure type (space group Fd-3m). ...
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9.
OXIDATION OF Cr (III) TO Cr (VI) IN THE SYNTHESIS OF BISMUTH-CHROMIUM OXIDE CERAMICS
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(Not-set)
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Bismuth-containing chromates BixCrO1.5x+3 with a variable molar ratio of 1 ? n(Bi)/n(Cr) ? 38 were synthesized using
a ceramic method from Bi (III) and Cr (III) oxides. Depending on the n(Bi)/n(Cr) ratio, ...
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10.
LOCAL ELECTRIC FIELD ENHANCEMENT IN THE VICINITY OF Ag NANOPARTICLES AND THEIR AGGLOMERATES IN ZINC-PHOSPHATE AND SILICATE GLASS
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(Not-set)
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Based on calculations, spatial distribution of the local electric field (LEF) for various structural configurations of silver nanoparticles (NPs) in silicate and zinc-phosphate glasses was studied. The ...
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11.
THE COMBINED EFFECT OF SINTERING ADDITIVES MgO AND TEOS ON THE STRUCTURE AND OPTICAL PROPERTIES OF CERAMICS YAG:Yb, Er
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(Not-set)
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In this work, the effect of sintering additives based on magnesium oxide (MgO) and silicon oxide (TEOS) in concentrations from 0.02 to 0.10 wt. % and 0.2 to 0.5 wt. %, respectively, was investigated on ...
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12.
PREPARATION, STRUCTURE AND IONIC CONDUCTIVITY OF THE M0.9Y0.1O2–?–BiScO3 (M = Zr, Ce)
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(Not-set)
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Samples of Zr0.9Y0.1O2–?–BiScO3 and Сe0.9Y0.1O2–?–BiScO3 solid solutions were obtained by solid-phase synthesis. X-ray diffraction revealed that the Zr0.9Y0.1O2–?–BiScO3 system corresponds to a tetragonal ...
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13.
MIDDLE RANGE ORDER IN GLASSES OF La2O3–Nb2O5–B2O3 AND BaO–Nb2O5–P2O5 SYSTEMS ACCORDING TO X-RAY TOTAL SCATTERING
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(Not-set)
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... systems. The RDF demonstrate separate peaks at distances below ~1 nm which points on the middle range ordering in the considered glasses. The consideration of RDF for BaO–Nb2O5–P2O5 glasses system with ...
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14.
Method of Calculation of Structural Parameters Ceramic Slickers
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(Not-set)
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The method of determining the volume-geometric structure of a corundum slip is refined by additional calculation of the average coordination number, the specific surface of the system S0 (the surface of ...
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15.
Plasma-Sprayed Ceramic Coatings Based on Fluoragnesium Apa-tite: Application Technology and Properties
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(Not-set)
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... microns, fineness of fluoromagnesiumapatite powder up to 90 microns , plasma-forming gas flow rate 20 l / min, distance of titanium powder spraying up to 150 mm, distance of spraying fluoromagnesiumapatite ...
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16.
Influence of Copper (II) Oxide on Microstructure and Phase Trans-formations of Bismuth Orthoniobate
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(Not-set)
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The microstructure and phase transformations of copper-doped BiNbO 4 ceramics synthesized at 950 and 1100 & # 176; C are investigated. According to XRD data, samples in a compact, pressed form crystallize ...
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17.
Interrelation of Structure with Whiteness and Transparency in Soft Porcelain
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(Science for ceramic production)
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... on the color characteristics of these types of porcelain has been established. Parian has a more homogeneous structure than bone china, since the scatter of data on the average distance between grains ...
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18.
Structural homogeneity of china ware
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(Science for ceramic production)
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Optical microscopy was used to assess the homogeneity of the structure of porcelain items by the orientation of quartz particles (grains) and the distances between them. The distributions of the number ...
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19.
Spectroscopic features of terbium- and cerium-activated yittrum-alumoborate glasses
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(Science for glass production)
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The Judd-Ofelt parameters have been calculated for Tb 3+ ions in yttrium-aluminum borate glasses co-activated with Tb 3+ and Ce 3+ (X1) and activated only Tb 3+ (X2). The received parameters are: ...
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20.
Improvement of glass batch transporter lines
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(Equipment)
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The problems of transportation of glass batch over long distances are considered. A project for the reconstruction of flow lines for raw materials and glass batch in the production of float glass is presented. ...
