Chemically prepared precursor powder for the fabrication of melt processed YBCO
| Autor: | David A. Cardwell, Wai Lo, S. L. Dung, R. G. Barter |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
Materials science
Scanning electron microscope Condensed Matter Physics Microstructure Electronic Optical and Magnetic Materials law.invention Chemical engineering law Spray drying visual_art X-ray crystallography Particle-size distribution visual_art.visual_art_medium Calcination Ceramic Electrical and Electronic Engineering Thermal analysis |
| Zdroj: | IEEE Transactions on Appiled Superconductivity. 5:1619-1622 |
| ISSN: | 1051-8223 |
| DOI: | 10.1109/77.402884 |
| Popis: | YBaCuO precursor powder specifically for the fabrication of melt processed ceramic has been prepared by spray drying and subsequent calcination. The formation processes of YBa/sub 2/Cu/sub 3/O/sub 7/(-/spl delta/) and Y/sub 2/BaCuO/sub 5/ have been studied in detail using thermal analysis and powder X-ray diffractometry. The morphology, microstructure and size distribution of the particles in the calcined powder have been investigated using high resolution SEM and particle size analysis and found to contain a significant proportion of sub-micron sized particles of Y/sub 2/BaCuO/sub 5/. Melt processed samples prepared using spray dried powder have been observed to exhibit a fine distribution of 211 particles which is desirable for high J/sub c/ applications. > |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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