Temperature Compensation of Bonded Rare-Earth Magnets by Blending of Alloy Powders (Materials Research)

这项提案将研究粘结稀土永磁体的内部温度补偿方法。重点将放在Nb-Fe-B磁体上，它在0到+150℃的范围内具有强烈的自发磁化强度的温度依赖性，主要磁性成分的粗粉将与表现出相反磁化温度系数的第二种硬磁材料混合。将确定合适的合金成分，开发模型，并在第一阶段测试混合物。

This proposal will examine a method of internal temperature compensation in bonded rare-earth permanent magnets. Emphasis will be on neodymium-iron-boron magnets, which have a strong temperature dependence of the spontaneous magnetization in the range of 0 to +150 C. Coarse powders of the main magnetic constituent will be blended with a second hard magnetic material that displays an opposite temperature coefficient of magnetization. Suitable alloy compositions will be identified, a model developed, and blends tested in Phase I.