Abstract
Influence of the grain size of the YBa 2Cu 3O 7− y phase prior to melt processing on the particle size of Y 2BaCuO 5 was investigated in melt-processed Y-Ba-Cu oxides. The YBa 2Cu 3O 7− y , powder compacts with various grain sizes were prepared by sintering at 880, 910 and 930°C. When the YBa 2Cu 3O 7− y , sample of fine grain size was melt-processed, fine Y 2BaCuO 3 particles were produced in the Ba-Cu-O liquid phase while coarse Y 2BaCuO 5 particles were present when the coarse-grained YBa 2Cu 3O 7− y , sample was used. After the peritectic reaction, the trapped Y 2BaCuO 5 particles within the YBa 2CuO 3 7− y , domains are finer. The production of fine Y 2BaCuO 5 particles appears to be due to the increased grain boundary area associated with small grain size of the 1-2-3 phase, which then provides more decomposition sites for YBa 2Cu 3O 7− y , grains and nucleation sites for the formation of Y 2BaCuO 5 particles.
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.
