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

本提案将研究一种测量内部温度的方法 粘结稀土永磁体的补偿。 重点 将在钕铁硼磁铁，其中有一个强大的 的自发磁化的温度依赖性 温度范围为0至+150 ℃。 主要磁性材料的粗粉 成分将与第二硬磁材料混合 显示出相反的温度系数 磁化 将确定合适的合金组成， 开发了一个模型，并在第一阶段测试了混合物。

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.