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:
Oct. 11, 2005
Filed:
May. 10, 2002
Yong Zhao, Urayasu, JP;
Yong Feng, Tokyo, JP;
Yuan Wu, Urayasu, JP;
Takato Machi, Tokyo, JP;
Yasunori Fudamoto, Tokyo, JP;
Naoki Koshizuka, Narashino, JP;
Masato Murakami, Tokyo, JP;
Yong Zhao, Urayasu, JP;
Yong Feng, Tokyo, JP;
Yuan Wu, Urayasu, JP;
Takato Machi, Tokyo, JP;
Yasunori Fudamoto, Tokyo, JP;
Naoki Koshizuka, Narashino, JP;
Masato Murakami, Tokyo, JP;
Abstract
The present invention relates to an MgB-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 MgB. 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 MgB-based superconductor in which titanium and/or a titanium compound are dispersed in polycrystalline MgB. The composition of the MgB-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.