Superconductor technology: apparatus – material – process – High temperature – per se – Free metal containing
Reexamination Certificate
2005-10-11
2005-10-11
Cooke, Colleen P. (Department: 1754)
Superconductor technology: apparatus, material, process
High temperature , per se
Free metal containing
C428S930000, C420S402000, C420S901000, C423S289000
Reexamination Certificate
active
06953770
ABSTRACT:
The present invention relates to an MgB2-based superconductor that is easy to manufacture and well suited to mass production, and that exhibits excellent superconducting characteristics (such as a high critical current density) while still retaining the high critical temperature characteristics of MgB2. A powder mixture of magnesium, boron, and titanium is pressed into a pellet, and this product is sintered under an atmospheric pressure and other conditions (preferably at 600° C. or higher) to manufacture an MgB2-based superconductor in which titanium and/or a titanium compound are dispersed in polycrystalline MgB2. The composition of the MgB2-based superconductor is preferably adjusted to have an atomic ratio of Mg:B:Ti=x:2:y, 0.7<x<1.2 and 0.05<y<0.3, and more preferably 0.07<y<0.2, by adjusting the amounts in which the raw materials are added.
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Feng Yong
Fudamoto Yasunori
Koshizuka Naoki
Machi Takato
Murakami Masato
Cooke Colleen P.
Flynn ,Thiel, Boutell & Tanis, P.C.
International Superconductivity Technology Center, The Juridical
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