Method of decoupling an HTC superconductive multifilament strand having a silver-based matrix, and a multifilament strand made thereby
US6272731A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1998 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Mar 19, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49014
Abstract
The invention relates a powder in tube type method of making an HTc superconductive multifilament strand having a silver-based matrix, in which: PA1 a first envelope is filled with powder reagents for an HTc superconductor; PA1 the resulting billet is drawn down into a monofilament strand; PA1 the monofilament strand is cut up into lengths and a secondary envelope is filled with the resulting lengths, thereby making a multifilament billet which is drawn down into a multifilament strand; PA1 the multifilament strand is cut up into lengths and a new envelope is filled with the resulting lengths, thereby making a new multifilament billet which is drawn down into a new multifilament strand; and PA1 it is shaped and subjected to heat treatment; PA1 according to the invention, at least one face of the monofilament strand is electrically insulated; and PA1 during the first multifilament step the secondary envelope is filled with the resulting insulated lengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.