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Fabrication and Microstructure of Composite Metal‐Clad Ceramic Superconducting Wire
Author(s) -
Oh MinSeok,
Liu Qin Fang,
Misiolek Wojciech,
Rodrigues Alex,
Avitzur Betzalel,
Notis Michael R.
Publication year - 1989
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1989.tb06046.x
Subject(s) - materials science , ceramic , sintering , microstructure , fabrication , composite material , superconducting wire , composite number , superconductivity , wire drawing , shrinkage , cladding (metalworking) , metal , metallurgy , medicine , alternative medicine , physics , pathology , quantum mechanics
Sheathed high‐ T c superconducting ceramic wire composites have been fabricated by wire drawing. Superconducting powders of YBa 2 Cu 3 O 7‐x (Y‐123) and Bi 4 (Sr, Ca) 6 Cu 4 O 16+x (Bi‐464) have both been prepared and successfully fabricated into continuous wire form. Under certain circumstances, a displacement reaction occurs at the interface between the ceramic superconductor and the containment tube; the nature of this displacement reaction and its prevention are discussed. Microcracking of the ceramic core is attributable predominantly to relative shrinkage effects during sintering. Failure of the metal wall during wire fabrication is attributed to drawing conditions and the mechanical properties of core and cladding.