发明名称 |
Residuum rare earth magnet |
摘要 |
A permanent magnet for an MRI scanner is made by removing extraneous elements from an ore containing rare earth elements to leave elements Pr and Nd therein, and then selectively stripping therefrom a portion of the element Nd as a byproduct to leave an ore residuum including both elements Pr and Nd therein. The residuum is alloyed with a transition metal to form an alloy therewith. The alloy is then formed into a rare earth permanent magnet configured for use in the MRI scanner.
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申请公布号 |
US6377049(B1) |
申请公布日期 |
2002.04.23 |
申请号 |
US19990248950 |
申请日期 |
1999.02.12 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
BENZ MARK GILBERT;SHEI JULIANA CHING |
分类号 |
A61B5/055;C22B59/00;C22C33/02;G01R33/20;G01R33/383;H01F1/053;H01F1/057;H01F41/00;H01F41/02;(IPC1-7):G01V3/00 |
主分类号 |
A61B5/055 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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