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1.
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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... by XRD and EDS. Pressureless sintering led to the stabilization of the cubic ZrO2 phase (c-ZrO2). Hot pressing achieved high relative density (>99 %) and practically no open porosity, while pressureless ...
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2.
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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3.
Combined shock-wave synthesis of noble spinel and cubic Laves phase
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(Science for ceramic production)
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Shock-wave synthesis of the high-pressure and temperature mineral MgAl2O4 with the parameter a = 8.085 (3) A and the Laves phase MgCu 2 with a = 7.076 (2) A from a mixture of MgO and aluminum powder ...
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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.
SYNTHESIS AND CHARACTERIZATION OF NEW PEROVSKITE-TYPE PbNaKNb2FeO9.5 CERAMIC
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(Not-set)
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... method. The sample is characterized by a non-porous microstructure formed by randomly oriented cubic crystallites. The band gap (?2.10 eV) of a complex perovskite for a direct allowed electronic transition ...
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6.
INVESTIGATION OF THE LANTHANUM HEXABORIDE OBTAINING PROCESSES BY THE METHOD OF BOROTHERMAL REDUCTION
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(Not-set)
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... content in the charge of 10 and 20 wt. %, respectively. It is also shown that these powders are characterized by a more uniform cubic structure of lanthanum hexaboride, reflecting its crystalline structure, ...
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7.
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 ...
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8.
Super-Hard Composites with a Homogeneous Microstructure and Nanosized Binding Obtained by Reaction Sintering in the cBN?Al?TiC System
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(Not-set)
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Experimental results on the synthesis in a cubic apparatus of composites based on diamond-like boron nitride cBN in the cBN-Al-TiC system are presented. It is shown that with an optimal ratio of the number, ...
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9.
Near-Infrared Raman Spectroscopy of Graphitic B-C-N-Materials
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(Materials and properties)
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Raman scattering (RS) studies of graphite-like phases BC x N (g-BC x N) obtained by various methods were carried out using an excitation laser operating in the near infrared range. The most typical ...
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10.
Features of Femtosecond Laser Modification of Antimony-Silicate Glass
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(Science for glass production)
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The features of the action of focused femtosecond laser pulses on antimony-silicate glass of the composition 25Sb 2 O 3 & middot; 75SiO 2 & # 37; (molar content) in thermal and non-thermal modes. ...
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11.
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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12.
Formation of polycrystalline diamond structure and phase composition under cobalt infiltration in diamond - hard alloy system
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(Science for ceramic production)
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Polycrystalline diamond composites (PCD) were obtained by infiltration of cobalt from a hard-alloy substrate into a porous diamond layer at a temperature of 1600 ° C and a pressure of 6.0 GPa in a cubic ...
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13.
Synthesis of new materials in boron ? carbon system
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(Science for ceramic production)
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Experimental results of the synthesis of diamond-like high-pressure compounds using the high-pressure technique and the method of laser deposition are presented. Their combination of unique characteristics ...
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14.
Abrasion resistance of superhard composite materials for highly efficient mining tools production
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(Science for ceramic production)
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Bench tests of the abrasion resistance of hard and superhard inserts have been carried out? hard alloy VK8, superhard composites based on cubic boron nitride PCBN and polycrystalline diamond PDC? for the ...
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15.
Optically transparent ceramics (review) [3-10]
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(Ceramic materials)
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The features of the manufacture of optically transparent ceramic materials for various fields of application are considered. Technologies for compacting and sintering transparent ceramics are described, ...
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16.
Structure formation in TiO2?BaCO3 system in condensed solar radiation field
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(Science for ceramic production)
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... It is shown that in the power range up to 100 W / cm2, barium metatitanate BaTiO 3 of the cubic system is formed; with an increase in the radiation power, a tetragonal phase of barium titanate is formed. ...
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17.
Properties of large-scale boron nitride-based bodies for super-hard composites
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(Science for ceramic production)
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A composite based on polycrystalline cubic boron nitride with a refractory binder, characterized by a high degree of phase distribution homogeneity, was obtained by thermobaric treatment in a cubic press ...
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18.
Physical and technological factors that determine the density of composite nano-ceramics Y - ZrO2 - Al2O3
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(Science for ceramic production)
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The features of sintering processes of ceramic materials of the Y - ZrO 2 - Al 2 O 3 system of various initial structural modifications (tetragonal or cubic) have been studied. The influence of the ...
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19.
Properties of mullite-zirconia ceramics obtained by spark plasma sintering
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(Science for ceramic production)
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The development of crystalline phases (mullite, pseudo-cubic zirconium dioxide, and zircon), microstructure, linear shrinkage, apparent density, and compressive strength of ceramic samples obtained from ...
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20.
Shock-wave synthesis of high-density modifications of zinc oxide
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(Science for ceramic production)
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The results of X-ray diffraction studies of preserved zincite samples subjected to dynamic compression (28 GPa) and the Debyegrams of ZnO crystals grown by the hydrothermal method are presented.
Three ...
