Temperature Compensation of Bonded Rare-Earth Magnets By Blending of Alloy Powders

提出了温度补偿磁性材料的研究方向。第二阶段通过采用铸造、烧结和热处理等先进加工技术，寻求具有适当高矫顽力和能量产品的改进基合金和补偿合金。这些合金的混合物被粘结成具有特定磁化温度系数的磁体。利用计算机模型预测共混物的性能。在第一阶段，提出了一种结合稀土永磁体内部温度补偿的方法。这是基于Nd-Fe-B的粘结磁体的兴趣，其自发磁化在典型使用范围为0℃至+150℃的强烈温度依赖性在许多应用中是一个问题，因为磁化可以随着温度的升高而迅速降低。

Proposed is research on temperature-compensated magnetic materials. Phase II seeks improved base and compensation alloys with suitably high coercivities and energy products by advanced processing techniques employing casting, sintering and thermal treatments. Blends of these alloys are bonded into magnets with specific temperature coefficients of magnetization. A computer model is used to predict properties of blends. In Phase I a method of internal temperature compensation for bonded rare-earth permanent magnets was demonstrated. This is of interest for bonded magnets based on Nd-Fe-B, whose strong temperature dependence of spontaneous magnetization in the typical use range of 0 degrees C to +150 degrees C is a problem in many applications since magnetization can decrease rapidly as temperature increases.