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1.
RESEARCH OF DOMESTIC BORON CARBIDE POWDERS FOR THE PRODUCTION OF REACTION-BONDED CERAMICS
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(Not-set)
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The article discussed the problem of manufacturing boron carbide ceramics with high physical and mechanical characteristics. The problem of choosing raw powders and ceramic manufacturing technology is ...
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2.
SINTERING OF Mg2TiO4 CERAMICS OBTAINED BY THE METHOD OF MECHANOCHEMICAL ACTIVATION OF A MIXTURE OF INITIAL POWDERS
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(Not-set)
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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 ...
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3.
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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4.
ZINC OXIDE POWDERS OBTAINED USING DEEP EUTECTIC SOLVENTS
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(Not-set)
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A study was conducted on obtaining powders for microwave dielectrics from zinc oxide using deep eutectic solvents. As a result of using various solvents, a monophase ZnO powder is formed, the particle ...
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5.
DIELECTRIC PROPERTIES OF LEAD ZIRCONATE CERAMICS PRODUCED FROM PbO AND ZrO2 NANOPOWDERS
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(Not-set)
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... ZrO? powders with particle sizes of 500 and 20 nm, respectively. It has been established that the use of nanodispersed powders makes it possible to reduce the sintering temperature compared to traditional ...
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6.
THE STUDY OF CERIUM DIOXIDE POWDER OBTAINED BY REVERSE DEPOSITION METHOD
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(Not-set)
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The processes of powder production of CeO2 by reverse deposition are investigated. The CeO2 content in the resulting products is 99.2 % by weight. The main phase is cerium dioxide with a cubic lattice. ...
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7.
EFFECT OF HOT PRESSING CONDITIONS OF CVD-ZnSe POWDER ON THE PROPERTIES OF OPTICAL CERAMICS
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(Not-set)
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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, ...
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8.
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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9.
SYNTHESIS OF TITANIUM OXIDE POWDERS FROM VARIOUS TITANIUM SALTS AND STUDY OF ITS PROPERTIES
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(Not-set)
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In this work, a number of titanium oxide powders with different crystal structures and textural characteristics were synthesized. The initial raw materials were metallic titanium and rutile (rutile particle ...
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10.
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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(Not-set)
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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 ...
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11.
PROPERTIES OF POWDERS SYNTHESIZED FROM AQUEOUS SOLUTIONS OF SODIUM SILICATE AND IRON SULFATE
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(Not-set)
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The phase composition of the powder synthesized from aqueous solutions of sodium silicate Na2SiO3 and iron sulfate FeSO4 at the molar ratio Fe/Si = 2 according to X-ray diffraction (XRD) data included ...
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12.
LINEAR AND NONLINEAR DIELECTRIC PROPERTIES OF CERAMICS OBTAINED FROM BARIUM TITANATE NANOPOWDER
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(Not-set)
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The results of a study of the dielectric properties and harmonic coefficient for barium titanate ceramics obtained from
a powder with a particle size of 50 nm at different sintering temperatures are presented. ...
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13.
INFLUENCE OF WASTE GLASS POWDER ON THE PROPERTIES OF CERAMIC STAB BASED ON LESS ROCK
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(Not-set)
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It was found that it is possible to obtain high-strength ceramic paving stones based on loess rocks with the addition of 20 % glass waste powder. At the same time, the amount of moisture in the ation should ...
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14.
APPLICATION OF SOL-GEL TECHNIQUE FOR SYNTHESIS OF NANOSTRUCTURED PIEZOELECTRIC MATERIALS IN LEAD ZIRCONATE-TITANATE SYSTEM – A REVIEW. PART 1. POWDERS SYNTHESIS
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(Not-set)
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In the present study, we presented a review progress in sol-gel method for the synthesis of powders of ferroelectric ceramics of the PbTiO3–PbZrO3 system, based on the controlled hydrolysis of mixtures ...
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15.
SYNTHESIS OF CERAMIC POWDERS OF HAFNIUM DIBORIDE BY CARBOTHERMAL RESTORATION METHOD
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(Not-set)
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... was heat treated in a vacuum furnace, hafnium diboride powder was obtained in the temperature range 1500...1700 °C, but it is characterized by the presence of secondary crystalline phases. Monophase hafnium ...
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16.
INFLUENCE OF YAG CERAMIC POWDERS GRINDING CONDITIONS OF ON THE PROPERTIES OF OPTICAL CERAMICS
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(Not-set)
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In this study, the changes in the morphology and degree of agglomeration of both precursor powders and ceramic YAG powders under varying grinding conditions was considered. The effect of these parameters ...
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17.
INFLUENCE OF TEMPERATURE ON THE PROPERTIES OF FREE LOADED INORGANIC OXIDE NANO POWDERS
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(Not-set)
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A comparative study was carried out on the possibility of controlling the average sizes of nano-sized powders of silicon dioxide and aluminum oxide obtained by electron beam evaporation, pyrogenic, liquid ...
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18.
CERAMIC MATERIALS OF A GIVEN PHASE COMPOSITION BASED ON HYDROXYAPATITE POWDER TREATED IN SOLUTIONS OF AMMONIUM, SODIUM AND POTASSIUM DIHYDROPHOSPHATES
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(Not-set)
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Powders of hydroxyapatite (HA) Ca10(PO4)6(OH)2 treated in 0.25M aqueous solutions of ammonium NH4H2PO4, sodium NaH2PO4 and potassium KH2PO4 dihydrophosphates for 1 hour under stirring were used for ceramics ...
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19.
CHARACTERISTICS OF FIRED CLAY BRICKS WITH DOLOMITE POWDER ADDITION
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(Not-set)
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The paper analyses the effect of dolomite powder on properties and durability of clay brick. Clay bricks were made from the mix containing from 10 to 30 % of waste dolomite powder and fired at 1000 ?C ...
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20.
CREATION AND PROPERTIES OF CERAMICS FROM NICKEL OXIDE NANOPOWDER
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(Not-set)
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By means of the method of the spark plasma sintering (SPS) on the basis of nanodimensional powder of nickel oxide (with an average particle size of about 100 nm), the fine-grained (of 250 – 500 nanometers ...
