Abstract
The effects of precursor powder calcination conditions on the phase formation, microstructure evolution and critical current density of the Bi-2223/Ag tapes have been studied. The precursor powders and tapes were characterized by XRD and SEM with EDX analysis. It has been found that both the microstructure and critical current density depend strongly on the powder calcination condition. Different calcination conditions resulted in different phase assemblages in the precursors, which determined the reactivity of the precursor and the final properties of the Bi-2223 tape. Increasing the calcination temperature, extending the calcination time and applying intermediate grinding resulted in the decrease in the relative amounts of and CuO, and the increase of in the precursor powder. The presence of aids liquid phase formation, enhancing diffusion and healing of microcracks.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
