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.

提出的是对温度补偿磁性材料的研究。 第二阶段通过采用铸造，烧结和热处理的高级加工技术寻求具有适当高的可雄性和能量产品的基础和补偿合金。 这些合金的混合物与磁化的特定温度系数粘合到磁铁中。 计算机模型用于预测混合的属性。 在I期中，证明了一种内部温度补偿方法对粘合的稀土永久磁体进行了补偿。 这是基于ND-FE-B的键合磁体的感兴趣，在典型使用范围内，自发性磁化的强度依赖于0度至+150摄氏度的典型使用范围内是许多应用的问题，因为磁化值随温度的升高会迅速降低。