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:
Aug. 06, 2002
Filed:
Jan. 03, 2001
Suvankar Sengupta, Upper Arlington, OH (US);
Superconductive Components, Inc., Columbus, OH (US);
Abstract
A process which relies on a joining technique between two individual strongly linked superconductors is disclosed. Specifically, this invention relates to fabrication of single domains of YBa Cu O or YBa Cu O with the addition of Y BaCuO and/or other secondary phases such as Pt/PtO , CeO , SnO , Ag, Y O and other rare earth oxides, by using a top-seeded, melt processing technique. Beginning with a single crystal seed such as Nd Ba Cu O or SmBa Cu O crystals, a melt-textured YBCO domain with crystallographic orientation nearly similar to that of the seed crystal can be fabricated. The samples are next machined to desired geometrical shapes. A bonding material is then applied to the ac plane. Low solidification or recrystalization point, similar crystal structure to that of YBa Cu O , and capability of growing epitaxially on YBCO domains are critical parameters of the bonding material. The pre-bonded samples are then heat treated such that the bonding material grows epitaxially on the ac plane of YBCO domains resulting in a strongly linked joint. A small amount of pressure may be used to keep neighboring domains together.