Formation of the liquid phase in the system Bi-Pb-Sr-Ca-Cu-O
Abstract
Differential thermal analysis, powder X-ray diffraction, and scanning electron microscopy were carried out to investigate the origin of the partial melting which is closely related to the formation of the 110 K superconducting phase in the Bi-Pb-Sr-Ca-Cu-O system. The occurrence of a liquid phase in the presence of the Bi2Sr2CaCu2O(y), Ca2PbO4, and CuO phases was demonstrated. Large grain growth and promotion of the 2223 phase formation resulting from the reactive liquid-phase-aided sintering were also observed.
- Publication:
-
American Ceramic Society Communications
- Pub Date:
- November 1990
- Bibcode:
- 1990ACSC...73.3507H
- Keywords:
-
- Electron Microscopy;
- High Temperature Superconductors;
- Liquid Phases;
- Melting;
- Mixed Oxides;
- Thermal Analysis;
- X Ray Diffraction;
- Bismuth Oxides;
- Calcium Oxides;
- Copper Oxides;
- Grain Size;
- Lead Oxides;
- Phase Transformations;
- Strontium Compounds;
- Solid-State Physics