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2 649 099

(13)

(51)

IPC

C22B34/24(2006-01-01)

B22F9/22(2006-01-01)

C22B5/12(2006-01-01)

(21) (22)

Application

2016125617, 2016-06-27

(24)

Start date

2016-06-27

(22)

Actual filing date

2016-06-27

(45)

Published

2018-03-29

(72)

Inventor

Orlov Veniamin MoiseevichProkhorova Tatyana Yurevna

(73)

Holder

Federalnoe Gosudarstvennoe Byudzhetnoe Uchrezhdenie Nauki Federalnyj Issledovatelskij Tsentr Nauchnyj Tsentr Rossijskoj Akademii Nauk" Knts Ran)

METHOD FOR PRODUCING VALVE METAL POWDER Russian patent published in 2018 - IPC C22B34/24 B22F9/22 C22B5/12

Abstract RU 2649099 C2

FIELD: metallurgy.

SUBSTANCE: method involves reduction of oxide compound powder of valve metal with pairs of magnesium or calcium by heating in inert atmosphere, heat treatment of reduction products is carried out at temperature of 1000-1500°C for 0.5-2 hours, acid leaching of magnesium or calcium oxide from reduction products. Production of valve metal powder, in particular, tantalum or niobium with oxygen content not more than 2.8 mg/m² with specific surface area value 0.94-5.42 m²/g.

EFFECT: possibility for using the powder as a capacitor.

6 cl, 1 tbl, 8 ex

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RU 2 649 099 C2

Authors

Orlov Veniamin Moiseevich

Prokhorova Tatyana Yurevna

Dates

2018-03-29—Published

2016-06-27—Filed