The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 1983
Filed:
Oct. 20, 1981
Kabushiki Kaisha Kobe Seiko Sho, Kobe, JP;
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 metals can occur easily. The two metals may for example be Nb and Sn or V and Ga.