基本信息:
- 专利标题：
- 申请号：DE69116723 申请日：1991-05-07
- 公开(公告)号：DE69116723T2 公开(公告)日：1996-06-27
- 发明人： SAKAI TAKENOBU , NISHIO KOJI , OGAWA NAOYUKI , HIRABAYASHI IZUMI , TANAKA SHOJI
- 申请人： INT SUPERCONDUCTIVITY TECH , TOYOTA MOTOR CO LTD , KAWASAKI HEAVY IND LTD , NGK INSULATORS LTD
- 专利权人： INT SUPERCONDUCTIVITY TECH,TOYOTA MOTOR CO LTD,KAWASAKI HEAVY IND LTD,NGK INSULATORS LTD
- 当前专利权人： INT SUPERCONDUCTIVITY TECH,TOYOTA MOTOR CO LTD,KAWASAKI HEAVY IND LTD,NGK INSULATORS LTD
- 优先权： JP11836390 1990-05-08
- 主分类号： C04B35/00
- IPC分类号： C04B35/00 ; C01G1/00 ; C01G3/00 ; C04B35/45 ; C04B35/653 ; H01B12/10 ; H01B13/00 ; H01L39/12 ; H01L39/24 ; C04B35/50
摘要：
Disclosed are an oxide superconductor, and an optimum process for producing the same. The oxide superconductor comprises a base material phase including an oxide superconducting material, the oxide superconducting material including barium (Ba) at least and being free from grain boundaries, and precipitation phases contained in an amount of 1 to 50% by volume in the base material phase and dotted therein in a manner like islands, the precipitation phases being oxides of a metal selected from the group consisting of silicon (Si), aluminum (Al), zirconium (Zr), magnesium (Mg), titanium (Ti), strontium (Sr), tungsten (W), cobalt (Co) and vanadium (V), and being products of decomposition reaction of the base material phase. In the production process, the constituent materials are treated thermally at a partially melting temperature in order to give the above-described novel structure to the oxide superconductor. Thus, the precipitation phases are dotted in a manner like islands in a sea of the base material phase being free from the grain boundaries, and the precipitation phases work as the pinning centers. Therefore, the oxide superconductor exhibits a high "Jc" value.
公开/授权文献:
- DE69116723D1 公开/授权日：1996-03-14