Niobium-titanium superconductors produced by powder metallurgy having artificial flux pinning centers

Patent · Tue Jul 13 04:00:00 EDT 1993

OSTI ID:6312322

Jablonski, P D; Larbalestier, D C

A superconducting wire structure is described comprising: a matrix comprising body centered cubic niobium-titanium alloy with a second phase of discrete metal inclusions compatible with niobium-titanium providing artificial pinning centers distributed therein, at least some second phase inclusions having sizes in the range of 1 to 10 nm, the second phase comprising between 5 to 50% by volume of the total matrix and second phase, wherein the second phase is selected from the group consisting of niobium, vanadium, tantalum, hafnium, zirconium, titanium, tungsten, molybdenum, chromium, copper, silver, gold and alloys thereof, and wherein the wire structure is formed by deforming and drawing a billet comprising a mixture of a first phase powder comprising the body centered cubic niobium-titanium alloy with a second phase powder of the metal compatible with niobium-titanium, the second phase comprising from 5% to 50% by volume of the mixture, the mixture pressed and sintered to provide a bond between the powder particles without significant diffusion of the second phase into the first phase or significant diffusion of the first phase into the second phase.

• Assignee: Wisconsin Alumni Research Foundation, Madison, WI (United States)
• Patent Number(s): A; US 5226947
• Application Number: PPN: US 7-837038
• OSTI ID: 6312322
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
ALLOYS
BCC LATTICES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
FABRICATION
INCLUSIONS
MAGNETIC FLUX
MATERIALS WORKING
METALLURGY
MICROSTRUCTURE
NIOBIUM ALLOYS
POWDER METALLURGY
SUPERCONDUCTING WIRES
TITANIUM ALLOYS
WIRES