钕铁硼－铝镍钴粘结永磁的复合效应

The Compound Effects of NdFeB-AlNiCo Bonded Permanent Magnet

本文比较系统地研究了钕铁硼－铝镍钴复合粘结永磁的复合效应，结果表明在塑料含量一定时ＮｄＦｅＢ－ＡｌＮｉＣｏ＿５复合永磁的剩余磁感应强度Ｂｒ随ＮｄＦｅＢ含量变化基本不变；剩用温度系数α＿（Ｂｒ）随ＮｄＦｅＢ含量增加而线性增大；内禀矫顽力＿ｊＨ＿ｃ，矫顽力＿ｂＨ＿ｃ，最大磁能积（ＢＨ）＿ｍ均随ＮｄＦｅＢ含量Ｘ增加呈指数函数增大，并具有下列数学关系式：＿ｊＨ＿ｃ＝１５０ｅ￣（４．１５ｘ）＋４４０，＿ｂＨ＿ｃ＝１４９ｅ￣（３．３７ｘ）＋４００，（ＢＨ）＿ｍ＝０．１７２ｅ￣（３．６１ｘ）＋０．

The compound effects of NdFeB-AlNiCo Compound bonded magnet have been studiedsystematically. It shows residual induction Br willalmost be constant with the various amount ofNdFeB when the amount of plaxtic is constant,Temperature coefficient of α_(Br),will increase linearlywith the increasing amount of NdFeB。Intrinsiccoercive force _jH_c coercive force _bH_c,and energyproduct(BH )_m will increase exponentially with theincreasing amount of NdFeB(x),the expressions are: _jH_c=150e￣(4.15x)+440,_bH_c=149e￣(3.37x)+400,(BH)_m=0.172e￣(3.61x)+0.4