Progress in development of high temperature superconducting wire for electric power applications
- Oak Ridge National Lab., TN (United States)
- Intermagnetics General Corp., Latham, NY (United States)
- IGC Advanced Superconductors, Waterbury, CT (United States)
The technology of high temperature superconductivity has gone beyond mere scientific curiosity and into the manufacturing environment. Single lengths of multifilamentary wire are now produced that are over 200 meters long and that carry over 13 amperes at 77 K. Short-sample critical current densities approach 5 x 10{sup 4} A/cm{sup 2} at 77 K. Conductor requirements such as high critical current density in a magnetic field, strain-tolerant sheathing materials, and other engineering properties are addressed. A new process for fabricating round BSCCO-2212 wire has produced wires with critical current densities as high as 165,000 A/cm{sup 2} at 4.2 K and 53,000 A/cm{sup 2} at 40 K. This process eliminates the costly, multiple pressing and rolling steps that are commonly used to develop texture in the wires. New multifilamentary wires with strengthened sheathing materials have shown improved yield strengths up to a factor of five better than those made with pure silver. Many electric power devices require the wire to be formed into coils for production of strong magnetic fields. Requirements for coils and magnets for electric power applications are described.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 230397
- Report Number(s):
- CONF-940812-27; ON: DE96009998; TRN: 96:003034
- Resource Relation:
- Conference: 29. intersociety energy conversion engineering conference, Monterey, CA (United States), 7-12 Aug 1994; Other Information: PBD: 1994
- Country of Publication:
- United States
- Language:
- English
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