METHOD FOR THERMAL SYNTHESIS OF NANOSIZE PARTICLES OF YTTRIUM ALUMINIUM GARNET IN MEDIUM OF ORGANIC SOLVENTS Russian patent published in 2016 - IPC C30B29/28 C01F17/00 C01F7/02 B82B3/00 B82Y40/00 

Abstract RU 2588227 C1

FIELD: technological processes.

SUBSTANCE: invention relates to technology of producing nano powder yttrium aluminium garnet, which is used as initial powder oxide ceramics, in dispersed state as filler or pigment or as starting powder for production of mono crystal or coating applied by plasma spraying. Method of thermal synthesis of nano size particles of yttrium aluminium garnet in medium of organic solvents is characterised by that mix of yttrium chloride, aluminium chloride and aluminium isopropylate in ratio 3:1:4 is subjected to heat treatment at intensive mixing in diphenyloxide, oleic acid, stearic acid or oleyl amine at temperature of 250-300 °C in argon atmosphere for 8 to 24 hours, after which formed precipitate is filtered at Buchner funnel and thoroughly washed with benzene. At that, synthesis temperature is reduced by 500-600 °C, which results in almost double reduction of power inputs for process of producing yttrium aluminium garnet.

EFFECT: disclosed method enables to obtain monophase product of yttrium aluminium garnet.

2 cl, 4 dwg, 1 tbl

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RU 2 588 227 C1

Authors

Zdravkov Andrej Viktorovich

Kudryashova Yuliya Sergeevna

Koptelova Larisa Alekseevna

Dates

2016-06-27Published

2015-03-18Filed