Thermomechanical processing of YBa2Cu3O(x)/Ag sheathed wires
Abstract
Silver-sheathed YBa2Cu3O(x) (YBCO) powder was thermomechanically processed by rolling wire into flat tapes from sealed 6.3 mm diameter, 76 mm long billets. Transport J(sub c) values at 77 K in zero applied magnetic filed reached about 600 A/sq cm. Mechanical processing of powder-in-tube specimens involves fracture, densification, and sliding of powder particles as well as deformation and work hardening of the metallic sheath. A model of these effects was developed and the experimental results suggest that the deformation properties of the powder dominate the stresses to fabricate the tapes.
- Publication:
-
Presented at the 2nd International Ceramic Science and Technology Congress
- Pub Date:
- November 1990
- Bibcode:
- 1990icst.congQ..12M
- Keywords:
-
- Barium Oxides;
- Copper Oxides;
- Fabrication;
- High Temperature Superconductors;
- Thermomechanical Treatment;
- Wire;
- Yttrium Oxides;
- Current Density;
- Magnetic Fields;
- Powder Metallurgy;
- Rolling;
- Silver;
- Solid-State Physics