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2 574 450

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(51)

IPC

C01B31/36(2006-01-01)

(21) (22)

Application

2014136128/05, 2014-09-05

(24)

Start date

2014-09-05

(22)

Actual filing date

2014-09-05

(45)

Published

2016-02-10

(72)

Inventor

Nechepurenko Anatolij SergeevichGaripov Oleg FaritovichPozhenskij Sergej Viktorovich

(73)

Holder

Rossijskaja Federatsija V Litse Kotoroj Vystupaet Ministerstvo Promyshlennosti I Torgovli Rossijskoj Federatsii Rossii)Aktsionernoe Obshchestvo Nauchno-Proizvodstvennoe Predprijatie Im. A.G. Romashina" Onpp Im.A.G. Romashina")

METHOD FOR OBTAINING POLYDISPERSE SILICON CARBIDE POWDER Russian patent published in 2016 - IPC C01B31/36

Abstract RU 2574450 C1

FIELD: chemistry.

SUBSTANCE: method for obtaining polydisperse silicon carbide powder includes mixing milled quartz and soot, charge compacting, carbothermal reduction and crushing of silicon carbide. Carbometric reduction to temperature 600°C is carried out in vacuum, with performing further heating to temperature 1850-1900°C at rate 4-6 degree/min in argon flow and exposure for 2-3 hours. Before mixing, soot is subjected to thermal processing.

EFFECT: increase of chemical purity and polydispersity of silicon carbide powder, obtained by effective method.

2 cl, 2 tbl

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RU 2 574 450 C1

Authors

Nechepurenko Anatolij Sergeevich

Garipov Oleg Faritovich

Pozhenskij Sergej Viktorovich

Dates

2016-02-10—Published

2014-09-05—Filed