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21.
ELECTRICAL PROPERTIES OF THE OXIDE PYROCHLORE Bi2Cu0.25Ni0.75Ta2O9: A BIPOLAR CONDUCTIVITY MODEL
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(Not-set)
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The electrical properties of the complex oxide Bi2Сu0.25Ni0.75Ta2O9 with a pyrochlore structure (space group Fd-3m, 10.5200(5) ?), synthesized by the solid-phase method, were studied using impedance spectroscopy. ...
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22.
INFLUENCE OF SOLID-STATE SYNTHESIS TEMPERATURE ON THE CRYSTAL STRUCTURE AND ELECTRICAL PROPERTIES OF CaCu3Ti4O12 CERAMICS
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(Not-set)
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Calcium-copper titanate (CaCu3Ti4O12/CСTO) is a highly demanded material for its colossal dielectric constant and temperature stability. CСTO has many applications as sensors, microwave absorbers, etc. ...
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23.
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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In this work, we investigated borophosphate glasses with additions of 0.5 to 1.5 mol. % of rare-earth fluorides LnF3 (Ln = La, Ce, Nd), considered as simulants of radioactive waste from the now developing ...
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24.
EVALUATION OF THE PROPERTIES OF FUNCTIONAL-GRADIENT CERAMIC MATERIALS OBTAINED BY THE METHOD OF CO-REACTION SINTERING
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(Not-set)
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Monolithic samples of functionally graded ceramic materials were fabricated via reaction sintering (siliconizing) of silicon carbide and diamond powders. The resulting materials are layered composites ...
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25.
PREPARATION OF FINE MAGNESIUM ALUMINATE SPINEL POWDER BY SHS: EFFECT OF NaCl MINERALIZER ON PHASE COMPOSITION AND DISPERSITY
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(Not-set)
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Magnesium aluminate spinel in a submicron state was obtained for the first time directly in a combustion wave by self-propagating high-temperature synthesis (SHS) from aluminum and magnesium oxides, using ...
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26.
HIGH-PURITY BORON OXIDE WITH CONTROLLED CONTENT OF RESIDUAL WATER AND OH-GROUPS
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(Not-set)
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A method for the direct determination of intercalated water in high-purity boron oxide has been developed. Comparative studies of the residual intercalated water and OH-group content in a commercial product ...
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27.
ELECTRON BEAM SINTERING OF ALUMINA-BASED COMPOSITE CERAMICS WITH COPPER ADDITION IN THE FORE-VACUUM PRESSURE RANGE
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(Not-set)
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The effect of electron-beam sintering in the fore-vacuum pressure range (8…10 Pa) on the density, structure, and phase composition of the sintered Al2O3–Cu composite with a component mass ratio of 10:1 ...
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28.
A STUDY OF THE EFFECT OF REPLACING ASH AND SLAG WASTE WITH DRILL CUTTINGS ON THE STRUCTURE AND PROPERTIES OF THERMAL INSULATION GEOPOLYMER MATERIALS
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(Not-set)
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The possibility of replacing bottom ash waste (ASW), which serves as the main raw material for the synthesis of such materials, with drill cuttings (DC) was investigated. It was found that DC, unlike ASW, ...
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29.
STUDY OF PHYSICO-CHEMICAL AND THERMOMECHANICAL CHARACTERISTICS OF BASALT ROCKS OF THE SHEKHZHELI DEPOSIT
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(Not-set)
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The article presents the results of a study on the elemental and chemical–mineralogical composition, as well as the structure and morphology of samples of Shekhzheli basalt, using chemical analysis, X-ray ...
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30.
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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31.
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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32.
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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33.
STUDY OF THE HOMOGENEITY OF THE CHEMICAL COMPOSITION OF LEAD-GERMANATE GLASSES BY LASER-INDUCED BREAKDOWN SPECTROSCOPY METHOD
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(Not-set)
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Lead-germanate glasses are a promising material for creating optical elements. However, producing such glasses with a high degree of homogeneity is associated with several technological challenges. During ...
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34.
RESEARCH OF DOMESTIC BORON CARBIDE POWDERS FOR THE PRODUCTION OF REACTION-BONDED CERAMICS
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(Not-set)
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... impact on the density of the blanks and the silicon content after reaction sintering, and the chemical composition of the powders affects the structure of the ceramics. The comparison of the structure ...
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35.
DEVELOMENT OF MANUFACTURING TECHNOLOGY OF HIGH-TEMPERATURE CERAMICS BASED ON ZIRCONIUM DIBORIDE BY PRESSURELESS SINTERING
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(Not-set)
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This paper presents the results of investigation on obtaining ZrB2-based ceramic by the method of slip casting followed by pressureless sintering. Optimal parameters for forming complex-shaped blanks were ...
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36.
EFFECT OF CeO2 ON THE STRUCTURE AND PROPERTIES OF ALUMINA-ZIRCONIA CERAMICS PREPARED BY PRESSURELESS SINTERING AND HOT PRESSING
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(Not-set)
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The influence of ceria (CeO2: 0…3,56 wt. %) and sintering method (pressureless sintering in air, hot pressing in Ar) on the phase composition, microstructure, and properties of alumina-zirconia ceramics ...
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37.
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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38.
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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39.
HETEROVALENT SUBSTITUTION OF ZIRCONIUM IN NASICON SOLID SOLUTION (Na3Zr2Si2РO12)
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(Not-set)
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... the morphology and phase composition of ceramics. Electron paramagnetic resonance spectra indicate the presence of Fe3+ atoms both in the crystalline phase (with g ~ 2.0) and in disordered phases with ...
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40.
PHYSICAL AND MECHANICAL PROPERTIES OF Al-Al2O3 CERMET WITH A HETEROGENEOUS GRANULE-LAYERED STRUCTURE PRODUCED USING MECHANICAL ALLOYING AND VACUUM SINTERING
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(Not-set)
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To produce Al–Al2O3 cermet with a heterogeneous granular-layered structure, mixing of flake aluminum powder of the PAP-2 brand with the plasma-chemical alumina powder (PCAP) consisting of nano-thick lamellar ...
