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1.
Developing of green filters based on oxide glass stained with transition elements
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(Science for glass production)
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... at ? max = 500 nm, high temperature resistance and low LTEC - (41-49) * middot; 10 -7 K -1 . The dyes were transition elements, which were introduced into the charge in the form of oxides TiO 2 , ...
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2.
Ceramics based on zirconates, titanates and stannates of rare-earth elements
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(Science for ceramic production)
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The solid-phase synthesis of gadolinium titanate, stannate and zirconate has been studied. It was shown that these compounds can be obtained at 700 ° C. Obtained ceramics based on Gd 2 Zr 2 O 7 , ...
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3.
INFLUENCE OF THE RARE-EARTH FLUORIDES ADDITIVE ON THE STRUCTURE AND PROPERTIES OF THE BOROPHOSPHATE GLASSES
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(Not-set)
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... region of the melt exhibit an amorphous structure and a uniform distribution of the components throughout the volume. Their glass transition temperature Tg is 430 °C and remains constant over the entire ...
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4.
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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5.
CONDUCTIVE PASTES FOR LOW TEMPERATURE CO-FIRED CERAMICS – A REVIEW
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(Not-set)
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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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6.
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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7.
GLASS FORMATION AND PHASE TRANSFORMATIONS IN THE TeO2–ZnO–MoO3 SYSTEM
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(Not-set)
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The glass-forming region in the ternary system TeO2–ZnO–MoO3 was investigated at two melt cooling rates. The achieved molybdenum trioxide content in the glass reached up to 80 mol. % with varying TeO? ...
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8.
X-RAY PHOTOELECTRON SPECTROSCOPY OF Bi2Ni1/2Co1/2Ta2O9 ± ? OXIDE CERAMICS
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(Not-set)
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... oxide is characterized by a porous microstructure formed by partially fused elongated crystallites with an average longitudinal size of 1…2 ?m. The chemical state of transition element cations in pyrochlore ...
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9.
SYNTHESIS OF Zn AND Mn CODOPED BISMUTH TANTALATE PYROCHLORE-TYPE CERAMICS
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(Not-set)
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... the distribution of part of the transition element ions into the cationic sublattice of bismuth (III). The unit cell parameter of the pyrochlore phase increases with increasing content of zinc ions in ...
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10.
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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11.
SYNTHESIS OF MULTICOMPONENT COMPOUNDS WITH A PIROCHLORE-TYPE STRUCTURE
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(Not-set)
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The possibility of solid-phase synthesis of multicomponent bismuth niobates and tantalates with pyrochlore-type structure (sp. gr. Fd-3m), containing atoms of transition 3d-elements in equimolar quantities ...
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12.
THE MANUFACTURING METHOD EFFECT ON THE STRUCTURE AND ELECTRICAL PROPERTIES OF SOLID SOLUTION Ce0.8Y0.2О2-?
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(Not-set)
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The solid solution Ce0.8Y0.2O2-? was obtained by three methods: sol gel, glycine nitrate and solid-state reaction. The synthesis temperature was 1350 ?C for the sample obtained by the sol gel method and ...
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13.
OXIDE-CONTAINING MINERAL FIBERS: TYPES, METHODS OF PRODUCTION, APPLICATION AND MANUFACTURERS (REVIEW)
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(Not-set)
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The article provides an overview of mineral oxide fibers of various chemical composition: aluminosilicate, alumina, silica, bio-soluble, zirconium oxide fibers and others. Methods for producing discrete ...
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14.
Glass-Ceramics Based on Lead Fluoroborate Glasses,
Co-Doped by Eu/Gd
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(Not-set)
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Transparent glass-crystalline materials co-activated with Eu 3+ / Gd 3+ were obtained by heat treatment of the initial lead fluoroborate glasses. It was found that the ions of rare-earth elements in ...
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15.
The Glasses, which Weakens Electromagnetic Radiation
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(Not-set)
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A radio-absorbing glass, transparent in the visible region of the spectrum, has been developed. The radioprotective effect was obtained by implanting accelerated ions of transition elements into the surface ...
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16.
Methods for producing ceramics from metal nitrides (a review)
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(Science for ceramic production)
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The main methods of obtaining metal nitrides are considered. The main advantages and disadvantages are highlighted for each method. The possibilities of using these materials in various industries are ...
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17.
Kinetics of structural relaxation in borosilicate melts
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(Science for glass production)
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The kinetics of structural relaxation of oxide systems containing complexing elements - boron and silicon - has been studied by potentiometric method. The influence of the nature of the oxide electrolyte, ...
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18.
Influence of SiO2/Al2O3 ratio on structure, properties and heat resistance of geo-polymer refractory materials
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(At the enterprises and institutes)
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A study of the properties of lightweight geopolymer materials (GM) based on refractory technogenic waste of aluminosilicates has been carried out. The effect of the ratio of oxides SiO 2 and Al 2 O ...
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19.
Ceramic pigments of black color based on chromium-nickel spinel NiCr2O4
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(Science for ceramic production)
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The possibility of obtaining a black pigment based on nickel chromite (NiCr 2 O 4 ) is considered. The morphological, granulometric, X-ray structural and optical characteristics of the synthesized crystalline ...
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20.
The use of electron paramagnetic resonance in glasses and raw materials studies
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(Science for glass production)
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The possibility of using the method of electron paramagnetic resonance in the study of the fine structure of glasses and glass-crystalline materials, as well as for the detection and identification of ...
