Inorganic compounds

US8187567B2 · kind B2 · utility

Assignee

• H.C. STARCK INC. · US

Inventors

• Christoph Schnitter · Ottersberg, DE
• Holger Brumm · Goslar, DE
• Christine Rawohl · Hildesheim, DE
• Colin McCracken · Lock Haven, US

Key dates

• Filing date: May 31, 2006
• Grant date: May 29, 2012
• Expiry date: Jul 7, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2982
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Disclosed is a niobium suboxide powder for the manufacture of capacitors with higher break down voltages, higher temperatures of operation and elongated lifetimes. The powder is doped with nitrogen which is at least partly present in the form homogeneously distributed, x-ray detectable Nb2N-crystal domains. The niobium suboxide powder contains niobium suboxide particles having a bulk nitrogen content of between 500 to 20,000 ppm.