发明名称 Rare earth magnets and method of producing same
摘要 Rare earth magnets comprising 12 to 20 at % R (where R denotes rare earth elements including at least one selected from neodymium and praseodymium) and 2 to 10 at % boron, with the remainder being TM (where TM=Fe1-xCox (0</=x</=0.4)) and unavoidable impurities, wherein 50 to 100 vol % of the magnet is formed of recrystallization grains of R2Fe14B intermetallic compound having a tetragonal crystal structure with an average grain size of 1 to 100 mu m and an induced anisotropy P of 0.1 or more (where P=(Br( PARALLEL )-Br( ORTHOGONAL ))/(Br( PARALLEL )+Br( ORTHOGONAL )), Br( PARALLEL ) being residual magnetic flux density along the easy magnetization axis and Br( ORTHOGONAL ) being residual magnetic flux density perpendicular to the easy magnetization axis), and the method of producing the rare earth magnets.
申请公布号 US5201963(A) 申请公布日期 1993.04.13
申请号 US19910800712 申请日期 1991.12.04
申请人 NIPPON STEEL CORPORATION 发明人 MUKAI, TOSHIO;FUJIMOTO, TATSUO;INAGUMA, TORU
分类号 B22F3/14;H01F1/057 主分类号 B22F3/14
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