Title:
MAGNESIUM REMOVAL FROM MAGNESIUM REDUCED METAL POWDERS
Document Type and Number:
WIPO Patent Application WO2006039126
Kind Code:
A3
Abstract:
A method of producing a refractory metal powder that includes providing a metal powder containing magnesium tantalate or magnesium niobate; and heating the powder in an inert atmosphere in the presence of magnesium, calcium and/or aluminum to a temperature sufficient to remove magnesium tantalate or magnesium niobate from the powder and/or heating the powder under vacuum to a temperature sufficient to remove magnesium tantalate or magnesium niobate from the powder, the heating steps being performed in any order. The metal powder can be formed into pellets at an appropriate sintering temperature, which can be formed into electrolytic capacitors.
Inventors:
LEONID NATAN SHEKHTER (US)
LEONID LANIN (US)
CONLON ANASTASIA M (US)
LEONID LANIN (US)
CONLON ANASTASIA M (US)
Application Number:
PCT/US2005/033291
Publication Date:
July 20, 2006
Filing Date:
September 19, 2005
Export Citation:
Assignee:
STARCK H C INC (US)
LEONID NATAN SHEKHTER (US)
LEONID LANIN (US)
CONLON ANASTASIA M (US)
LEONID NATAN SHEKHTER (US)
LEONID LANIN (US)
CONLON ANASTASIA M (US)
International Classes:
B22F9/22; B22F9/20; C22C1/04
Foreign References:
| US6558447B1 | 2003-05-06 | |||
| US3647420A | 1972-03-07 | |||
| US20020152842A1 | 2002-10-24 | |||
| US6171363B1 | 2001-01-09 |
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