Niobium powder, sintered body thereof, chemically modified...

Details Niobium powder, sintered body thereof, chemically modified... Niobium powder, sintered body thereof, chemically modified...

2005-03-08

2005-03-08

Dinkins, Anthony (Department: 2831)

Electricity: electrical systems and devices

Electrolytic systems or devices

Liquid electrolytic capacitor

C361S504000

Reexamination Certificate

active

06865069

ABSTRACT:
The invention relates to a niobium powder capable of providing a capacitor having small amounts of leakage current, wherein the average nitrogen concentration in the layer of 50 to 200 nm from the surface to 0.29 to 4% by mass and preferably controlling that in the depth within 50 nm from the surface to 0.19 to 1% by mass, the sintered body, the formed body and the capacitor using the same.

REFERENCES:
patent: 3847658 (1974-11-01), Kumagai
patent: 5128289 (1992-07-01), Wilson
patent: 6115235 (2000-09-01), Naito
patent: 6409796 (2002-06-01), Surpin
patent: 10-242004 (1998-09-01), None
International Search Report for PCT/JP02/10231.

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