Process for increasing the pinning force of superconducting Bi-Sr-Ca-Cu-O ceramic moldings

US5716909A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Peter Majewski · Welzheim, DE
• Guenter Petzow · Echterdingen, DE
• Fritz Aldinger · Rodenbach, DE
• Bernhard Hettich · Hofheim, DE
• Steffen Elschner · Heidelberg, DE

Key dates

• Filing date: Oct 1, 1996
• Grant date: Feb 10, 1998
• Expiry date: Oct 1, 2016

Classification

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

Abstract

Process for increasing the pinning force of superconducting Bi-Sr-Ca-Cu-O ceramic moldings, which comprises heating the pure-phase 2212 phase of a Bi-Sr-Ca-Cu-O ceramic molding under pure oxygen or an oxygen-containing gas for from 1 to 40 minutes to a temperature of from 825.degree. to 900.degree. C. and generating secondary-phase precipitates in the process.