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

通过合金粉末混合对粘结稀土磁体进行温度补偿

• 批准号: 8903370
• 负责人: Reinhold Strnat
• 金额: $ 22.52万
• 依托单位: KJS Associates, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-10-01 至 1993-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8903370&HistoricalAwards=false
• 关键词: Temperature; Compensation; Bonded; Rare; Earth

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.

提出了一种温度补偿磁流变液的研究方法， 材料. 第二阶段寻求改进的基础和补偿合金 具有适当的高结晶度和能量产品， 采用铸造、烧结和热处理的加工技术 治疗。 这些合金的混合物被粘合成磁铁， 磁化的特定温度系数。 计算机 模型用于预测共混物的性能。 在第一阶段，内部温度补偿方法， 展示了粘结稀土永磁体。 这一点 对Nd-Fe-B基粘结磁体的兴趣， 自发磁化的温度依赖性 0摄氏度到+150摄氏度的典型使用范围是一个问题 在许多应用中，由于磁化会随着 温度上升。