Optimization of texturing process by hot pressing of Bi-Pb-Sr-Ca-Cu-O (2223) ceramics

✍ Scribed by J.G. Noudem; J. Beille; D. Bourgault; A. Sulpice; R. Tournier

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 748 KB
• Volume: 230
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(94)90444-8

✦ Synopsis

We have optimized a texturing process of Bi-Pb-Sr-Ca-C'u-O (2223) superconducting ceramics by hot pressing. The Hoechst precursor powder has been first pressurized at 1 GPa and then heated under uniaxial stress up to 35 MPa, just below the melting temperature between 850°C and 857°C. We have obtained large textured samples having critical transport current densities Jc as large as 2500 A/cm 2. In this work, we have optimized the stress value as well as the temperature treatment on the basis of characterizations such as magnetization and electrical-transport measurements.