摘要
首次将电场烧结方法引入烧结NdFeB永磁材料的制备中,通过分析压坯的温度场特征发现,在较高的预设升温速度下,压坯的实际升温过程存在延迟情况。对烧结磁体的SEM观察表明,随预设升温速度的提高,磁体的致密度逐步提高。当NdFeB合金以2000℃/s的预设升温速度在1000℃烧结8min后,磁体的微观组织明显优于传统烧结磁体。
The method of electric field sinter was first introduced to the sintering of NdFeB permanent magent material. It is found by thermal field characteristic of compact, the actual heating-up velocity presences delaying behaviour. The sintered magnets were observed by SEM.It is comfirmed that, as the prejudged speed increasing,the tightness of magnet enhances accordly. While the prejudged speed getting to 2 000℃/s and sintering 8 minutes at 1 000℃, the microstructure of magnet surpasses the tradition sintering ones.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2007年第3期29-32,共4页
Electronic Components And Materials
基金
成都市高新技术资助项目(05HJGX099)
关键词
金属材料
NDFEB
电场烧结
升温速度
metallic material
NdFeB
electric field sinter
heating-up velocity
