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:
Dec. 18, 2007
Filed:
May. 20, 2005
Masahiro Kojima, Tokyo, JP;
Masakazu Kawahara, Tokyo, JP;
Michiharu Ichikawa, Yokosuka, JP;
Hiroyuki Kado, Yokosuka, JP;
Masatoyo Shibuya, Yokosuka, JP;
Masahiro Kojima, Tokyo, JP;
Masakazu Kawahara, Tokyo, JP;
Michiharu Ichikawa, Yokosuka, JP;
Hiroyuki Kado, Yokosuka, JP;
Masatoyo Shibuya, Yokosuka, JP;
Dowa Electronics Materials Co., Ltd, Tokyo, JP;
Central Research Institute of Electric Power Industry, Yokosuka, JP;
Abstract
The present invention provides an oxide superconductor thick film which is formed on a substrate or a board and has a high Jc and Ic and a method for manufacturing the same. Predetermined amounts of materials containing elements of Bi, Pb, Sr, Ca and Cu are weighed, mixed and subjected to steps of calcining, milling, and drying, and thereafter an organic binder and an organic vehicle are added thereto to prepare a (Bi, Pb)SrCaCuOsuperconductive paste, which is applied to the surface of a substrate or a board in a thickness of 260 μm or more and dried. Thereafter, the paste is first subjected to burning at temperatures of 835° C. to 840° C. for 100 hours, then pressurization, and further burning at temperatures of 835° C. to 840° C. for 100 hours, thereby preparing an oxide superconductor thick film having a film thickness of 130 μm or more having a high Jc and Ic.