Ag. Mamalis et al., FABRICATION OF MULTILAYERED STEEL SUPERCONDUCTIVE CERAMIC (Y-BA-K-CU-O) SILVER RODS BY EXPLOSIVE POWDER COMPACTION AND EXTRUSION, Journal of materials processing technology, 57(1-2), 1996, pp. 155-163
Axisymmetric explosive powder compaction and subsequent direct extrusi
on are employed to fabricate a multi-layered metal/high-T-c ceramic ro
d consisting of a silver mandrel, a potassium doped YBa2Cu3O7 core and
a steel sheath. Experimental investigations regarding the 'soundness'
and the superconducting properties of the component at the various st
ages of the fabrication are reported. Microstructural/crystallographic
changes, macro- and micro-defects of the 'green' compacted billet and
the extruded rod are also indicated and discussed.