Production method of compound-type superconducting wire
US4386970A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1981 |
| Grant date | Jun 7, 1983 |
| Priority date | — |
| Expiry date | Oct 20, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49014
Abstract
The specification describes a method for producing compound-type superconducting wire of excellent mechanical and electrical properties. A green compact is first formed with copper powder and one of two metals which form a superconducting compound through a reaction therebetween. The latter metal is in a very fine hydrogenated form. The green compact is then heated in vacuo so as to dehydrogenate the hydride of the latter metal and sinter the green compact into a sintered mass. Before or after drawing the sintered mass into a wire, it is composited with the other metal of the two metals, thereby forming a composite wire. It is then subjected to a further heat treatment to cause the reaction to occur between the two metals. To improve its properties, it may be held in a high temperature, high pressure gaseous atmosphere to cause plastic deformation to occur. Since the dehydrogenation and annealing are performed in a single step, the overall process has been simplified. Since the latter metal is dispersed uniformly in the form of highly pure and ultra-fine particles in the Cu-matrix of the sintered mass, it can be drawn very smoothly into a wire and the reaction between the two metal…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.