High-T.sub.c superconductor or precursor material for the oxide-powder-in-tube method (OPIT)

US6043198A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Marc Neubacher · Frankfurt am Main, DE
• Joachim Bock · Lechenich, DE
• Christoph Lang · Palo Alto, US
• Eberhard Preisler · Lechenich, DE
• Helga Weis · Frankfurt am Main, DE

Key dates

• Filing date: Aug 15, 1997
• Grant date: Mar 28, 2000
• Expiry date: Aug 15, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S505/782
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing a high-T.sub.c superconductor as a precursor material for the oxide-powder-in-tube method, which involves mixing the oxides of the elements Bi, Sr, Ca and Cu and completely melting them at temperatures of .gtoreq.1000.degree. C., then casting the melt onto a substrate which is kept at room temperature, and disintegrating the cooled melt block and grinding it into a powder.