Patent · US Expired

Making a super conductor

US4181543A · kind A · utility

1Cited by

9References

5Claims

0Family size

Assignee

Kabel- und Metallwerke Gutehoffnungshutte AG · DE

Inventors

Friedrich Schatz
Karl-Heinz Marx · Garbsen, DE
Peter Rohner · Lüneburg, DE

Key dates

Filing date	Jan 18, 1979
Grant date	Jan 1, 1980
Priority date	—
Expiry date	Jan 18, 1999

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49014
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A super conductor is made by first shaping a copper strip carrying a niobium layer into a corrugated tube; thereafter tin is deposited on the tube which is coiled, hung from a ceramic rod and placed into an annealing furnace being evacuated thereafter, the interior of the tube is sealed off from the interior of the furnace. After, e.g. two hours of heating for causing the tin to diffuse into the niobium, a sufficiently thick layer of Nb.sub.3 Sn has developed and a cold inert gas is flushed through the tube to rapidly cool the tube while retaining it in the evacuated but no longer heated furnace.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.