Steklo i Keramika (Glass and Ceramics). Monthly scientific, technical and industrial journal

 

ISSN 0131-9582 (Online)

Total: 50 results found.

Page 2 of 3

21. SINTERING OF Mg2TiO4 CERAMICS OBTAINED BY THE METHOD OF MECHANOCHEMICAL ACTIVATION OF A MIXTURE OF INITIAL POWDERS
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In this work, the effect of mechanochemical activation time of mixtures of initial components on the sintering of magnesium titanate ceramics is studied. The apparent activation energy of sintering samples ...
22. STUDY OF CHARACTERISTICS OF ADHESIVE PERMANENT JOINTS IN REACTION-SINTERED CERAMIC MATERIALS BASED ON SILICON CARBIDE
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Laboratory samples of reaction-sintered silicon carbide ceramics with permanent adhesive joints were obtained based on isopropyl alcohol and phenol-formaldehyde resin solutions with different contents ...
23. MECHANISM OF REDUCING AGGLOMERATION OF YAG CERAMIC POWDERS USING AMMONIUM SULFATE DISPERSANT
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... and particle size depending on whether the dispersant was present. The kinetics of phase transformations in the ceramic powders, with and without ammonium sulfate, were thoroughly examined using X-ray ...
24. 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 ...
25. PHYSICAL AND MECHANICAL PROPERTIES OF CERAMIC COMPOSITE MATERIAL BASED ON Al6Si2O13–ZrSiO4
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Composite ceramic materials based on SiO2–Al2O3–ZrO2 nanopowders were obtained by sintering and their properties were studied. Before sintering, the powders were subjected to mechanical activation in a ...
26. PHASE FORMATION OF NEW PYROCHLORE TYPE CERAMICS Bi2.7Zn0.46Ni0.70Sb2O10 + ?
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... Phase-pure pyrochlore is formed at 950…1050 ?С. At a temperature of 1050 ?С, sintering of fine-grained ceramics occurs, a low-porosity microstructure is formed due to the fusion of small grains with the ...
27. LOW-TEMPERATURE CERAMICS BASED ON WOLLASTONITE AND PEROVSKITE MODIFIED WITH THE ADDITION OF Al2O3–CuO–Li2CO3 FOR LTCC TECHNOLOGY APPLICATION
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Ceramics based on beta-CaSiO3 wollastonite with additives of perovskite and sintering aluminum-copper-lithium additive were obtained. The effect of a sintering additive on ceramic and dielectric properties ...
28. ELECTRON BEAM SINTERING OF ZIRCONIUM DIOXIDE CERAMICS WITH DIFFERENT YTTRIUM OXIDE CONTENT
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The results of the study of the effect of different fractional fractions of the stabilizing impurity of yttrium oxide Y2O3 on the microstructure, phase composition, and mechanical properties of ceramics ...
29. CERAMIC WASTE AS AN ALTERNATIVE SOURCE OF ALUMINOSILICATE RAW MATERIALS FOR THE PRODUCTION OF PORTLAND CEMENT CLINKER
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Through comprehensive studies of the chemical and mineralogical composition and technological properties of the wastes of ceramic production of “Kulol” JSC in order to be able to use them as a component ...
30. PHYSICAL AND MECHANICAL CHARACTERISTICS OF CERAMIC MATERIALS OF SYSTEMS ZrO2–Sm2O3 TWO-PHASE COMPOSITION
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Ceramic Materials of Compositions (mol. %) 97ZrO2–3Sm2O3 and 94ZrO2–6Sm2O3 based on nanosized powders synthesized by hydrolysis sol-gel method are obtained. It is shown that in ceramic materials a two-phase ...
31. EFFECT OF HOT PRESSING CONDITIONS OF CVD-ZnSe POWDER ON THE PROPERTIES OF OPTICAL CERAMICS
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The paper studies the effect of vacuum hot pressing (VHP) conditions on the microstructure, density, and optical properties of ZnSe ceramics. Graphite and titanium foils, as well as powdered aluminum oxide, ...
32. 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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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, ...
33. X-RAY PHOTOELECTRON SPECTROSCOPY OF Bi2Ni1/2Co1/2Ta2O9 ± ? OXIDE CERAMICS
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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 ...
34. FEATURES OF THE SYNTHESIS OF CERAMIC PARANIOBATE OF COMPOSITION YErYbNbO7
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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 ...
35. THE EFFECT OF THE RATIO OF MgO/CaO SINTERING ADDITIVES ON THE OPTICAL PROPERTIES OF YAG:Cr CERAMICS
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In this study, we investigated how the composition and ratio of sintering additives MgO and CaO influence the optical properties of ceramic materials YAG:Cr3+ and YAG:Cr4+. All samples exhibited high transparency ...
36. MICROSTRUCTURE AND PROPERTIES OF A GLASS-FIBER COMPOSITE DEPENDING ON THE SPECIFIC SURFACE AREA OF THE FILLER – LEAD TITANATE
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The microstructure of solder compositions based on high-lead low-melting glass and lead titanate as a crystalline filler correcting the temperature coefficient of linear expansion (TCLE) of solder has ...
37. SYNTHESIS OF Zn AND Mn CODOPED BISMUTH TANTALATE PYROCHLORE-TYPE CERAMICS
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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. ...
38. CERAMIC COMPOSITE MATERIALS IN THE Ca2P2O7–Ca3(PO4)2 SYSTEM BASED ON POWDER MIXTURES INCLUDING CALCIUM PHOSPHATE OF NATURAL ORIGIN AND MONOCALCIUM PHOSPHATE MONOHYDRATE
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Ceramics in the Ca2P2O7–Ca3(PO4)2 system were obtained from powder mixtures containing calcium hydroxyapatite Са10(РО4)6(ОН)2 of natural origin and monocalcium phosphate monohydrate Ca(H2PO4)2·H2O. Fish ...
39. PRODUCTION OF POROUS CERAMICS ?-Al2O3–3YSZ WITH ADDITIVE OF ?(?)-Al2O3
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Porous ?-Al2O3–3YSZ ceramics were fabricated using slip casting, incorporating 15 wt. % submicron Al2O3 powders as sintering additives. These orders were synthesized via solution combustion synthesis using ...
40. OXIDATION OF Cr (III) TO Cr (VI) IN THE SYNTHESIS OF BISMUTH-CHROMIUM OXIDE CERAMICS
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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, ...