不同基体粘结NdFeB磁体的磁性能及稳定性研究  

Research of the Magnetic Properties and the Stability of the Bonded NdFeB Magnets Based on Different Matrix

作　　者：史新伟[1] 李杏瑞[1] 黄金亮[2] 杨留栓[2] 

机构地区：[1]郑州大学物理工程学院 材料物理教育部重点实验室,河南郑州450052 [2]河南科技大学材料科学与工程学院,河南洛阳471003

出　　处：《稀有金属材料与工程》2007年第A03期427-430,共4页Rare Metal Materials and Engineering

基　　金：河南省自然科学基金资助(004041300)

摘　　要：通过磁粉表面处理及在NdFeB磁粉中添加不同比例的粘结剂,制备了金属基和塑料基两种粘结磁体,研究了不同基体磁体的稳定性和磁性能,从断口SEM照片及结合理论分析可得出结论:磁粉的表面处理可以改善磁体的稳定性及磁性能,通过磁性能测试及对比和退磁率的测量可以看出塑料基磁体的磁性能低于金属基磁体,但其稳定性却显著提高,塑料基磁体的使用温度可达150～180℃。Two kinds of bonded magnets based on metal and plastic matrix respectively are prepared by the method of surface treatment and adding different ratio of binding admixture into the NdFeB magnetic powders. The magnetic properties and stability of the magnets are studied. From SEM fractograph of the magnets＇ and coherent theory, we can draw the following conclusions： the magnetic properties and the stability of the magnets can be enhanced by surface treatment. The magnetic properties of the plastic based magnets are lower than those of the metal based magnets, but their stability are improved greatly. The service temperature of the plastic based magnets can reach about 150-180℃.

关 键 词：NDFEB磁体 表面处理 稳定性 磁性能 

分 类 号：TM27[一般工业技术—材料科学与工程]