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41.
The effect of presynthesized powder additives in combined synthesis and sintering of SrZrO3 ceramics
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(Science for ceramic production)
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... of denser ceramics than without addition. The reasons are a decrease in the degree of nonequilibrium of the workpiece compaction process due to a slight increase in friction between particles and a decrease ...
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42.
INFLUENCE OF THE PURITY OF THE RAW MATERIALS SrCO3 AND TiO2 ON SOLID-STATE SYNTHESIS AND PROPERTIES OF SrTiO3 CERAMICS
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(Not-set)
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... ~99,9 % (сhemically pure), >99,9 % (extra pure). Micron-sized mixtures were obtained to average the particle size of the initial powders and reduce its effect on the synthesis process. Regardless of the ...
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43.
PRODUCTION OF MICRONEEDLE ZIRCONIUM DIOXIDE POWDER STABILIZED BY ITTRIUM AND CERIUM
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(Not-set)
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... phase composition has been proven using a combination of physical and chemical methods. Microneedle particles with a length of 100…200 ?m and a cross-section of about 1 ?m have been obtained. These powders ...
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44.
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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45.
SYNTHESIS AND THERMAL PROPERTIES OF TUNGSTEN SILICATE COMPLEXES WITH HEXAMETHYLENETETRAMINE
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(Not-set)
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Previously unknown in the literature, complexes of hexamethylenetetramine (HMTA) with tungsten silicates of the composition Rb5[SiW11O39Fe(HMTA)]?20H2O, Cs5[SiW11O39Fe(HMTA)]?6H2O, Rb6[SiW11O39Zn(HMTA)]?12H2O, ...
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46.
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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47.
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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... mechanism were confirmed by XRD, FT-IR spectroscopy, and scanning electron microscopy combined with energy-dispersive spectroscopy (SEM-EDS). The synthesized powder exhibits a multimodal particle size ...
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48.
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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49.
FINISHING OF THE SURFACE OF CORUNDUM CERAMICS WITH AN ARGON CLUSTER-ION BEAM
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(Not-set)
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The effectiveness of an argon ion cluster beam for polishing the surface of corundum ceramics was investigated. Using atomic force microscopy, changes in the surface relief of VK-100 ceramics were studied ...
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50.
DEVELOPMENT OF NANOMODIFIED CEMENT USING MICROSILICA, POLYCARBOXYLATE AND DUNE SAND: OPTIMIZATION OF COMPOSITION AND STRENGTH CHARACTERISTICS
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(Not-set)
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... area of 5500…5700 and an average particle size of 3.5…3.7 ?m. Strength tests have shown that the optimal clinker content is 70...80 %, while replacing up to 20 % of clinker with dune sand does not reduce ...
