Powdered niobium, sintered body thereof, capacitor using the sintered body and production method of the capacitor
AssigneeShowa Denko K.K.
InventorKazumi Naito
Life of this patent
Estimating the term…
Abstract
The present invention relates to a powdered niobium for a capacitor, characterized in that the content of each of the elements such as iron, nickel, cobalt, silicon, sodium, potassium and magnesium is about 100 ppm by weight or less or that the total content thereof is about 350 ppm by weight or less is used, a sintered body thereof, a sintered body comprising niobium monoxide crystal and/or diniobium mononitride crystal, a capacitor using the sintered body and the production method of the capacitor. A capacitor using the above described niobium sintered body has a large capacity per the unit weight, a good specific leakage current value and excellent high temperature property.
Claims16
A sintered body for a capacitor comprising a powdered niobium comprising at least one element selected from the group consisting of iron, nickel, cobalt, silicon, sodium, potassium and magnesium, wherein an amount of each element is about 100 ppm by weight or less.
A niobium sintered body for a capacitor, comprising at least one of niobium monoxide crystal and a diniobium mononitride crystal.
A sintered body for a capacitor comprising a powdered niobium comprising at least one element selected from the group consisting of iron, nickel, cobalt, silicon, sodium, potassium and magnesium, wherein the total amount of the elements is about 350 ppm by weight or less.
A sintered body for a capacitor comprising a powdered niobium comprising at least one element selected from the group consisting of iron, nickel, cobalt, silicon, sodium, potassium and magnesium, wherein an amount of each element is about 100 ppm by weight or less and the total amount of the elements is about 350 ppm by weight or less.
Dependencies are inferred from the claim text.