发明授权
US06953770B2 MgB2—based superconductor with high critical current density, and method for manufacturing the same
失效
具有高临界电流密度的MgB2基超导体及其制造方法
- 专利标题： MgB2—based superconductor with high critical current density, and method for manufacturing the same
- 专利标题（中）： 具有高临界电流密度的MgB2基超导体及其制造方法
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申请号： US10333770申请日： 2002-05-10
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公开(公告)号： US06953770B2公开(公告)日： 2005-10-11
- 发明人: Yong Zhao , Yong Feng , Yuan Wu , Takato Machi , Yasunori Fudamoto , Naoki Koshizuka , Masato Murakami
- 申请人： Yong Zhao , Yong Feng , Yuan Wu , Takato Machi , Yasunori Fudamoto , Naoki Koshizuka , Masato Murakami
- 申请人地址： JP Tokyo
- 专利权人： International Superconductivity Technology Center, The Juridical Foundation
- 当前专利权人： International Superconductivity Technology Center, The Juridical Foundation
- 当前专利权人地址： JP Tokyo
- 代理机构： Flynn, Thiel, Boutell & Tanis, P.C.
- 优先权： JP2001-167389 20010601
- 国际申请： PCT/JP02/04568 WO 20020510
- 国际公布： WO02/09879 WO 20021212
- 主分类号： H01L39/12
- IPC分类号： H01L39/12 ; H01L39/00 ; H01B1/02 ; H01B12/00
摘要：
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
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