Title:
Tantalum powder
Document Type and Number:
Japanese Patent JP6147200
Kind Code:
B2
Abstract:
For the production of valve metal powders they are deoxidized using reducing metals under an inert carrier gas. Deoxidation is performed with liquid reducing metals/metal hydrides without contact with the valve metal powders. The deoxidizing apparatus has a reactor (1) with two reactor chambers linked by a channel (6). One reactor chamber (2) contains a crucible (4) for the primary powder and the other reactor chamber (3) has a crucible (5) for the reducing metal/metal hydride to be evaporated, and it has an inert gas feed (10) of helium, neon or argon. Separate heating units (7-9) set the required temperatures (T1-T3).
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Inventors:
Helmut Haas
Ulrich Baltmann
Christoph Schnitter
Elisabeth Droste
Ulrich Baltmann
Christoph Schnitter
Elisabeth Droste
Application Number:
JP2014011157A
Publication Date:
June 14, 2017
Filing Date:
January 24, 2014
Export Citation:
Assignee:
H.C. Starck GmbH
International Classes:
B22F9/22; B22F1/00; B22F5/00; C22B5/04; C22B9/10; C22B9/14; C22B34/12; C22B34/14; C22B34/22; C22B34/24; C22B34/34; C22B34/36; C22C27/02
Domestic Patent References:
| JP2002206105A | ||||
| JP2000226602A | ||||
| JP200313115A |
Attorney, Agent or Firm:
Einzel Felix-Reinhard
Ohta Kengaku
Hiroyasu Ninomiya
Ohta Kengaku
Hiroyasu Ninomiya