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Full-Text Articles in Engineering
Microstructural Variations With Uranium Compound Doping Of Bi-Sr-Ca-Cu-O/Ag Superconducting Tapes, D. A. Milliken, J. H. Ahn, S X. Dou
Microstructural Variations With Uranium Compound Doping Of Bi-Sr-Ca-Cu-O/Ag Superconducting Tapes, D. A. Milliken, J. H. Ahn, S X. Dou
Faculty of Engineering - Papers (Archive)
Doping of Bi-Sr-Ca-Cu-O based silver sheathed superconducting tapes (BSCCO/Ag) with various uranium compounds was carried out. This work was aimed at minimising the detrimental effects of doping to allow for later irradiation and fission to create columnar defects for strong flux pinning. The effects on the transport current density of BSCCO/Ag of doping with a variety of uranium compounds up to 2 at% was determined. Microstructural changes due to the doping were investigated. Removal of elements from the BSCCO matrix by uranium compound dopants was studied by energy dispersive spectroscopy. It was found that UCa1.5Sr1.5O6 least degraded electrical performance and …
Effect Of The Sinter-Forging Deformation Rate On Properties Of Bi-2223 Current Leads, X. K. Fu, Y. C. Guo, W. M. Chen, Hua-Kun Liu, S. X. Dou
Effect Of The Sinter-Forging Deformation Rate On Properties Of Bi-2223 Current Leads, X. K. Fu, Y. C. Guo, W. M. Chen, Hua-Kun Liu, S. X. Dou
Faculty of Engineering - Papers (Archive)
The influence of the sinter-forging rate on the critical current density (Jc) behaviour in an external field and on the contact resistance Rc for Bi-2223 current leads has been investigated. The current leads were fabricated by a combination of cold isostatic pressing (CIP) and sinter-forging methods with the thickness reduction rate ranging from 0% to 90%. The two silver contact terminals of each sample were also prepared during the sinter-forging. The results revealed that Jc was strongly affected by the deformation rate of sinter-forging and reached a maximum of 725 A/cm2 at a deformation rate of 80%. From the measurements …