METHOD OF REDUCING PARTICLE SIZE AND DEGREE OF AGGLOMERATION AT STAGE OF INITIAL PRECURSORS SYNTHESIS WHEN PRODUCING YTTRIUM ALUMINIUM GARNET

FIELD: chemistry.SUBSTANCE: invention relates to the technology of producing compounds of complex oxides with a garnet structure, solenated by rare-earth elements, which can be used in the technology of synthesis of optical ceramic materials of laser quality when creating active bodies of solid-stat...

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Hauptverfasser:	Tarala Vitalij Alekseevich, Malyavin Fedor Fedorovich, Shama Marina Sergeevna, Chikulina Irina Sergeevna, Golota Anatolij Fedorovich
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE APPARATUS THEREFOR ARTIFICIAL STONE BASIC ELECTRIC ELEMENTS CASTING CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS CONCRETE CRYSTAL GROWTH DEVICES USING STIMULATED EMISSION ELECTRICITY INORGANIC CHEMISTRY LIME, MAGNESIA MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER MANUFACTURE OR TREATMENT OF NANOSTRUCTURES MANUFACTURE OR TREATMENT THEREOF MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES METALLURGY NANOSTRUCTURES FORMED BY MANIPULATION OF INDIVIDUAL ATOMS,MOLECULES, OR LIMITED COLLECTIONS OF ATOMS OR MOLECULES ASDISCRETE UNITS NANOTECHNOLOGY PERFORMING OPERATIONS POWDER METALLURGY PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE REFINING BY ZONE-MELTING OF MATERIAL REFRACTORIES SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE SINGLE-CRYSTAL-GROWTH SLAG SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES TRANSPORTING TREATMENT OF NATURAL STONE UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	FIELD: chemistry.SUBSTANCE: invention relates to the technology of producing compounds of complex oxides with a garnet structure, solenated by rare-earth elements, which can be used in the technology of synthesis of optical ceramic materials of laser quality when creating active bodies of solid-state lasers of different geometry. Method of reducing particle size and degree of agglomeration at the stage of synthesis of precursor in producing aluminium yttrium pomegranate involves preparing an initial solution of yttrium chlorides, aluminium, ytterbium and erbium with given composition based on formula YAG: Yb (15 at.%)/Er (3 at.%) by dissolving chlorides in water while heating, followed by introduction of ammonia into aqueous solution, decantation in deionised water, filtration, subsequent drying and grinding, wherein solutions of initial chlorides contain ammonium persulphate with concentration from 0 to 1.0 mol/l, preferable concentration of ammonium persulphate from 0.02 to 0.15 mol/l.EFFECT: on the basis of obtained precursors optical ceramic with optical transmission from 72 to 82 % is obtained.1 cl, 6 dwg, 3 tbl, 5 ex Изобретение относится к технологии получения соединений сложных оксидов со структурой граната, солегированных редкоземельными элементами, которые могут быть применены в технологии синтеза оптических керамических материалов лазерного качества при создании активных тел твердотельных лазеров различной геометрии. Способ уменьшения размеров частиц и степени агломерации на стадии синтеза исходных прекурсоров при получении алюмоиттриевого граната включает приготовление исходного раствора из хлоридов иттрия, алюминия, иттербия и эрбия заданного состава исходя из формулы YAG:Yb (15 ат. %)/Er (3 ат. %) путем растворения хлоридов в воде при нагревании с последующим введением в водный раствор аммиака, декантацию в деионизированной воде, фильтрование, последующую сушку и измельчение, причем растворы исходных хлоридов содержат персульфат аммония с концентрацией от 0 до 1,0 моль/л, предпочтительная концентрация персульфата аммония от 0,02 до 0,15 моль/л. На основе полученных прекурсоров получают оптическую керамику со светопропусканием от 72 до 82%. 6 ил., 3 табл., 5 пр.