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1.
NUCLEATION AND CRYSTALS GROWTH IN THE VOLUME OF GLASS Li2O–Al2O3–SiO2 SYSTEM
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(Not-set)
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The crystallization properties of multicomponent glass based on the Li2O–Al2O3–SiO2 system are investigated. By the Marotta et al method, temperature of 670 ?C at a holding time of 2 hours provides the ...
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2.
Optical Glass Doped with γ-Ga2O3 Nanocrystals for Visualization of UV-C Radiation
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(Not-set)
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... of the first category. Subsequent heat treatment results in the release of & # 947; -Ga 2 O 3 nanocrystals in it and the initiation of luminescence, excited only by UV radiation of the solar-blind ...
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3.
Glasscrystals Process of a Conception in Metasilicate Fusions
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(Not-set)
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Based on the concept of cybotaxic groups, a model of nucleation in metasilicate melts has been developed, which takes into account the thermodynamic and kinetic factors of phase transformation. The number ...
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4.
Production Whiskers Crystals of α-Al2O3 on the Ceramic Surface from Lead-Zinc ore Processing Waste
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(Science for ceramic production)
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It is shown for the first time that filamentary & # 171; whiskers & # 187; aluminum oxide with a porous structure. The morphology of the grown & # 171; whiskers & # 187; was studied. It is shown that & ...
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5.
Synthesis of highly doped with boron diamond microcrystals and BC3-heterodiamonds at high pressures and temperatures
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(Science for ceramic production)
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The results of the synthesis and analysis of diamond microcrystals with a high degree of boron doping (& # 8776; 2 & # 37;), which were obtained from mixtures of gas soot with M-carborane at 8 GPa and ...
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6.
Textured single crystals of leucosapphire ? a promising material for science and technology
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(Growth of the production efficiency)
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Profiled leucosapphire, which possesses a set of unique technical characteristics, in some cases is the only material that makes it possible to create new highly efficient devices and devices operating ...
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7.
Growing Li2MoO4 crystals from activated water solutions
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(At the enterprises and institutes)
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The possibility of obtaining crystals of lithium molybdate Li 2 MoO 4 from aqueous solutions activated by low-frequency oscillations of a chemically inert body is considered. It was shown that the ...
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8.
Diffusion creep of oxide ceramic and point defects in crystals
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(Science for ceramic production)
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Experimental data on the effect of thermal, impurity, and nonstoichiometric vacancies on the diffusion creep of oxide ceramics at high temperatures and low mechanical loads are presented. It is shown that ...
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9.
From chemistry of imperfect crystals to ancient ceramic
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(Rememberance)
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On the basis of the analysis of the publications of V.D.Kingeri, the areas of his scientific interests are considered in chronological order. Particular attention is paid to his merits in the field of ...
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10.
CERAMICS BASED ON POWDERS SYNTHESIZED FROM CALCIUM NITRATE AND SILICIC ACID PREPARED VIA ION EXCHANGE METHOD
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(Not-set)
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Ceramics in the CaO–SiO2 and Na2O–CaO–SiO2 systems were obtained from powders synthesized from aqueous solutions of silicic acid and calcium nitrate at a molar ratio of Ca/Si = 0.5 by direct precipitation ...
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11.
INFLUENCE OF PARTICLE SIZE ON THE STRUCTURAL AND FERROELECTRIC PROPERTIES OF (PbZrO3)0,90(BaTiO3)0,10 CERAMICS
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(Not-set)
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The article presents X-ray diffraction, dielectric, and pyroelectric results of a PbZrO3 ceramic synthesized from nanodispersed PbO and ZrO2 powders with the addition of BaTiO3 nanoparticles. It was found ...
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12.
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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13.
INVESTIGATION OF THE STRUCTURE OF A TRANSPARENT GAHNITE-BASED GLASS-CERAMICS IN THE Na2O–ZnO–MgO–Al2O3–SiO2 SYSTEM BY TRANSMISSION ELECTRON MICROSCOPY
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(Not-set)
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... °C, in addition to zinc spinel, zinc-magnesium silicate (Zn, Mg)2SiO4 crystallizes, the particle sizes of which reach 15…20 nm, while the sizes of ZnAl2O4 crystals do not exceed 6 nm, and therefore it ...
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14.
DETERMINATION OF TRIBOLOGICAL CHARACTERISTICS OF REACTION-SINTERED SILICON CARBIDE IN A FRICTION PAIR WITH TITANIUM ALLOY VT6
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(Not-set)
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Ceramic materials based on silicon carbide were synthesized using reaction sintering with the introduction of a reactive component – technical carbon black – into the starting mixture at varying concentrations ...
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15.
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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16.
STUDY OF DEGRADATION OF LUMINESCENT PROPERTIES OF ERBIUM-DOPED ZINC-TELLURITE GLASSES UNDER TROPICAL CLIMATE CONDITIONS
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(Not-set)
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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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17.
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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(Not-set)
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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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18.
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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19.
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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20.
SPECTROSCOPIC PROPERTIES OF ZINC-PHOSPHATE GLASSES SINGLE-DOPED WITH Er3+ AT DIFFERENT CONCENTRATIONS
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(Not-set)
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Spectral-luminescence properties of zinc-phosphate ZnO–P2O5 (PZ) glasses doped with 0.25…1.00 mol. % Er2O3 were studied. It has been shown that an increase in the Er2O3 concentration in the synthesized ...
