Niobium powder, sintered body thereof and capacitor using...

Details Niobium powder, sintered body thereof and capacitor using... Niobium powder, sintered body thereof and capacitor using...

2005-02-15

2005-02-15

Mai, Ngoclan T. (Department: 1742)

Specialized metallurgical processes, compositions for use therei

Compositions

Loose particulate mixture containing metal particles

C075S245000, C361S528000

Reexamination Certificate

active

06855184

ABSTRACT:
The present invention relates to a niobium powder for a capacitor having Mg and Zr contents each of 50 to 400 mass ppm, a W content of 20 to 200 mass ppm and a Ta content of 300 to 3,000 mass ppm, with the contents of elements other than oxygen, nitrogen, hydrogen, Mg, Zr, W and Ta, each being 50 mass ppm or less, a sintered body using the powder and the capacitor using the sintered body. The capacitor using the sintered body made of the niobium powder of the present invention has a large capacitance per unit mass and good heat resistance property.

REFERENCES:
patent: 6540810 (2003-04-01), Naito et al.
patent: WO 9838660 (1998-09-01), None
patent: WO 0067936 (2000-11-01), None
patent: WO 0245106 (2002-06-01), None
International Search Report for PCT/JP03/05351 dated Jul. 22, 2003.

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