Browse Prior Art Database

Fabrication of High Field Superconducting Alloys

IP.com Disclosure Number: IPCOM000097435D
Original Publication Date: 1962-Dec-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Reich, HA: AUTHOR

Abstract

Several materials, such as Nb(3)Sn, Nb(3)Zr and MoRe, are superconductors having high critical temperatures and magnetic fields. Due to the large difference in melting points of the constituents, alloys of the above and similar metals have been difficult to fabricate. In order to overcome the disadvantage of the large difference in melting points of the elements in an alloy, a procedure for the fabrication of alloys is as follows: 1. The starting elements or materials are prepared in the form of foils of at least two different materials, each of a thickness, of the order of 0.001 - 0.005 inches, so that when alternate foils are stacked the desired stoichiometry results. 2.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 68% of the total text.

Page 1 of 1

Fabrication of High Field Superconducting Alloys

Several materials, such as Nb(3)Sn, Nb(3)Zr and MoRe, are superconductors having high critical temperatures and magnetic fields. Due to the large difference in melting points of the constituents, alloys of the above and similar metals have been difficult to fabricate. In order to overcome the disadvantage of the large difference in melting points of the elements in an alloy, a procedure for the fabrication of alloys is as follows:
1. The starting elements or materials are prepared in the form

of foils of at least two different materials, each of a

thickness, of the order of 0.001 - 0.005 inches, so that when

alternate foils are stacked the desired stoichiometry results.
2. The foils are placed in intimate contact and are then rolled

up on themselves so as to form a composite bar having many

alternate layers of the two or more kinds of foils.
3. The composite bar is reduced in cross-section by successive

swaging and drawing operations.
4. The resultant elongated bar is divided into a number of

sections, the sections are stacked and successive swaging

and drawing operations are performed on the stack to further

reduce the thickness of the original foils.
5. The procedure in Step 4 is repeated as often as necessary to

provide the desired reduction in thickness of the original

foils and the desired final wire size.
6. The wire of final size, which now consists of an intimate

mixture of the two or more constituents, is...