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Effects of quenching speed and Joule heating on the magnetic properties of Nd_9Fe_(86)B_5 ribbons

查看全文 作　　者：[1]ANKang;[1]HUJifan;[2]WANGDongling;[1]QINHongwei;[3]SUNGuangfei;[3]CHENJufang;[2]YUXiaojun;[2]LIBo 高影响力作者 机构地区：[1]SchoolofPhysicsandMicroelectronics,StateKeylaboratoryforCrystalMaterials,ShandongUniversity,Jinan250100,China;[2]AT&MTechnologyCo.Ltd.,CentralIronandSteelResearchInstitute,Beijing100081,China;[3]SchoolofMaterialsScienceandEngineering,UniversityofScienceandTechnologyBeijing,Beijing100083,China高影响力机构 出　　处：《Rare Metals》索引2005年第24卷第2期,共4页高影响力期刊 基　　金：This work was financially supported by the Hi-Tech Research and Development Program (863 Program) of China (No. 2002AA302602 and No. 2001AA324010). 摘　　要：The influences of quenching speed and current annealing on the magnetic properties of Nd9Fe86B5 ribbons were investigated. There is an optimum quenching speed (v ≈ 15 m/s) for preparing hard magnetic ribbons, where the remanence of 1.22 T, the intrinsic coercivity of 521 kA?m?1 and the energy products of 150 kJ?m?3 are obtained. After annealing ribbons prepared with v = 20 m/s at a dc current of 0.85 A, the remanence reaches a quite large value of 1.47 T, which attributes to the strong exchange coupling interactions between the fine grains of Nd2Fe14B and α-Fe. 关 键 词：铌铁硼合金 熔化旋转带状物 交换耦合 淬火速度 焦耳加热 磁性 纳米两相磁体
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