铸造-热变形Nd-Fe-B永磁合金显微组织及性能的研究  

Study on microstructure and magnetic properties of casting hot-deforming Nd-Fe-B permanent magnet

作　　者：张鑫[1] 闫俊萍[1] 孙昊[1] 王玉峰[1] 

机构地区：[1]内蒙古科技大学材料科学与工程学院,内蒙古包头014010

出　　处：《包头钢铁学院学报》2004年第3期250-253,共4页Journal of Baotou University of Iron and Steel Technology

基　　金：内蒙古科技攻关项目(20020202);教育部科学技术研究重点项目(地方02031)

摘　　要：对铸造NdFeB磁体进行了不同变形温度、不同变形量的热压及压后热处理的实验.Experiment on the Nd-Fe-B permanent magnets with the changes of hot-pressing temperature and strain rate was carryed out in heat treatment after hot-deforming.The relation between the magnetic properties and microstructures was investigated,which shows that magnetic properties of hot-pressed Nd-Fe-B permanent magnets are sensitive to the microstructures.The microstructure of Nd-Fe-B ingot has great effects on producing hot-deformed Nd-Fe-B permanent magnetic materials.The standard of optimum microstructures is very fine and even with highly preferred C-axies orientation and straight boundary,and with the rich-Nd phase on the boundaries surrounding the grains.

关 键 词：ND-FE-B 稀土永磁 热变形 

分 类 号：TG132.27[一般工业技术—材料科学与工程]