各向同性双相纳米晶粘结磁体制备工艺的改进对矫顽力影响  

Dual phase Nanocrystalline Isotropy Bonded Magnets was Ameliorated by Preparation Technology for Influence of Coercivity

作　　者：朱明刚[1] 李岫梅[1] 董生智[1] 李卫[1] 

机构地区：[1]北京钢铁研究总院功能材料所

出　　处：《河北师范大学学报（自然科学版）》2000年第4期462-464,共3页Journal of Hebei Normal University：Natural Science

基　　金：国家自然科学基金资助项目! (5 0 0 710 5 1)

摘　　要：对影响各向同性双相纳米晶 Nd4.5 Fe76 .5 - x Gax Co1 .0 B1 8粘结磁体矫顽力的工艺条件进行了研究 ,给出了矫顽力随晶化温度以及 Ga含量变化的关系 ,发现当晶化温度从 660℃增加到 72 0℃时 ,矫顽力的峰值先上升 ,达到一个最大值 ,然后下降 ,690℃晶化的效果最好 ,最高矫顽力达到 34 3k A/ m.The effect of technological condition on coercivity of Dual phase nanocrystalline Nd 4.5 Fe 76.5- x 1 Ga x 1 Co 0.1 B 18 isotropy bonded magnets is studied in detail,the dependence of coercivity on crystallization temperature and Ga content is showed,with the increase of crystallization temperature from 660℃ to 720℃ the peak value of coercive force H cj increases at first,then reaches the maximum at about 690℃ and finally decreases,the value of ( H cj ) max for optimum state can reach 343kA/m.

关 键 词：粘结磁体 交换耦合 矫顽力 各向同性纳米晶 制备工艺 晶化温度 永磁材料 磁能积 

分 类 号：TM273.051[一般工业技术—材料科学与工程]