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2 674 526

(13)

(51)

IPC

C01B32/914(2017-01-01)

B22F9/20(2006-01-01)

C22B34/32(2006-01-01)

B82Y30/00(2011-01-01)

(21) (22)

Application

2017135813, 2017-10-09

(24)

Start date

2017-10-09

(22)

Actual filing date

2017-10-09

(45)

Published

2018-12-11

(72)

Inventor

Nikolaenko Irina VladimirovnaShvejkin Gennadij Petrovich

(73)

Holder

Federalnoe Gosudarstvennoe Byudzhetnoe Uchrezhdenie Nauki Institut Khimii Tverdogo Tela Uralskogo Otdeleniya Rossijskoj Akdemii Nauk

METHOD FOR PRODUCING CHROMIUM CARBIDE POWDER Russian patent published in 2018 - IPC C01B32/914 B22F9/20 C22B34/32 B82Y30/00

Abstract RU 2674526 C1

FIELD: technological processes.

SUBSTANCE: invention relates to the production of nano-dispersed chromium carbide powder. Carry out the recovery treatment of the oxide compound of chromium by microwave radiation in an argon atmosphere. In an aqueous solution of an inorganic chromium salt selected from the group including Cr(NO₃)₃⋅9H₂O, Cr(SO₄)⋅6H₂O and CrCl₃, impose carbon black in the amount of chromium calculated for chromium oxide Cr₂O₃÷C=1:4.33 and carry out the processing of the resulting solution with an aqueous solution of inorganic alkali at pH=7.5–12.0 to obtain a precipitate of chromium nanoparticles on the surface of soot particles, which is dried and pressed into tablets. Resulting tablets are treated with microwave radiation with a frequency of 2,450–3,000 MHz and a power of 700–900 W at an argon feed rate of 5–6 l/h in three stages.

EFFECT: production of a single-phase nano-dispersed powder is provided.

1 cl, 4 dwg, 1 tbl, 3 ex

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RU 2 674 526 C1

Authors

Nikolaenko Irina Vladimirovna

Shvejkin Gennadij Petrovich

Dates

2018-12-11—Published

2017-10-09—Filed