Ceramic/metal and A15/metal superconducting composite materials exploiting the superconducting proximity effect and method of making the same

Patent · Fri Jan 01 00:00:00 EST 1999

OSTI ID:872732

Holcomb, Matthew J ^[1]

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1. Manhattan Beach, CA

A composite superconducting material made of coated particles of ceramic superconducting material and a metal matrix material. The metal matrix material fills the regions between the coated particles. The coating material is a material that is chemically nonreactive with the ceramic. Preferably, it is silver. The coating serves to chemically insulate the ceramic from the metal matrix material. The metal matrix material is a metal that is susceptible to the superconducting proximity effect. Preferably, it is a NbTi alloy. The metal matrix material is induced to become superconducting by the superconducting proximity effect when the temperature of the material goes below the critical temperature of the ceramic. The material has the improved mechanical properties of the metal matrix material. Preferably, the material consists of approximately 10% NbTi, 90% coated ceramic particles (by volume). Certain aspects of the material and method will depend upon the particular ceramic superconductor employed. An alternative embodiment of the invention utilizes A15 compound superconducting particles in a metal matrix material which is preferably a NbTi alloy.

• Research Organization: Stanford Univ., CA (United States)
• DOE Contract Number: FG03-86ER45245
• Assignee: Board of Trustees of Leland Stanford Junior University (Palo Alto, CA)
• Patent Number(s): US 5998336
• OSTI ID: 872732
• Country of Publication: United States
• Language: English

Related Subjects

ceramic
metal
a15
superconducting
composite
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exploiting
proximity
effect
method
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coated
particles
matrix
fills
regions
coating
chemically
nonreactive
preferably
silver
serves
insulate
susceptible
nbti
alloy
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below
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improved
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consists
approximately
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90
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compound
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conducting particles
coating material
conducting material
improved mechanical
composite materials
metal matrix
matrix material
ceramic particles
critical temperature
mechanical properties
composite material
superconducting material
alternative embodiment
coated particles
ceramic particle
coated ceramic
composite mat
omposite materials
ceramic superco
/505/29/174/252/428/