首页 | 本学科首页   官方微博 | 高级检索  
     

添加润滑剂对烧结钕铁硼磁体性能的影响
引用本文:王标,高汝伟,陈蓓新,刘汉强.添加润滑剂对烧结钕铁硼磁体性能的影响[J].材料研究学报,2004,18(6):577-581.
作者姓名:王标  高汝伟  陈蓓新  刘汉强
作者单位:1. 山东大学;烟台首钢磁性材料股份有限公司
2. 山东大学
3. 烟台首钢磁性材料股份有限公司
基金项目:国家高技术研究发展计划(863计划) , 国家自然科学基金
摘    要:研究了烧结钕铁硼永磁材料的粉末流动性及添加润滑剂对粉末流动性与磁体取向度和磁性能的影响.结果表明:影响松装状态磁粉流动性的主要因素是粉末颗粒团聚,影响密实磁粉流动性的主要因素是颗粒间的摩擦力.添加适量的润滑剂可以防止粉末颗粒团聚、明显地减小摩擦力,改善粉末流动性,提高磁体的取向度、剩磁与磁能积.采用添加润滑剂和橡皮模等静压制成型工艺,批量生产的烧结钕铁硼磁体性能达到:Br=1.457 T,jHc=1148 kA/m(14.43 kOe),(BH)max=408 kJ/m3(51.3 MGOe).

关 键 词:凝聚态物理  烧结钕铁硼磁体  粉末流动性  取向度  润滑剂  剩磁
文章编号:1005-3093(2004)06-0577-05
收稿时间:2004-12-29
修稿时间:2004年2月11日

Effects of the addition of lubricant on the magnetic properties of NdFeB sintered magnets
WANG Biao GAO Ruwei CHEN Beixin LIU Hanqiang.Effects of the addition of lubricant on the magnetic properties of NdFeB sintered magnets[J].Chinese Journal of Materials Research,2004,18(6):577-581.
Authors:WANG Biao GAO Ruwei CHEN Beixin LIU Hanqiang
Abstract:Powder flowability and effects of adding lubricant on the powder flowability, the alignment degree and the magnetic properties of sintered NdFeB magnet have been studied. The results show that the main factor affecting powder flowability is the aggregation of powder particles while the powders are in incompact state and the friction between the powder particles while the powders are in compact state. The addition of lubricant with suitable dose can slightly prevent the aggregation of powders, obviously decrease the friction between the powder particles, improve the powder flowability, and increase the alignment degree, remanent magnetization and energy product density of sintered magnets. By adding suitable lubricant dose and adopting rubber isostatic pressing (RIP), we have succeeded in mass producing the sintered NdFeB magnet with high hard magnetic properties of Br=1.457 T, iHc=1148 kA/m(14.43 kOe), (bH)max=408 kJ/m3(51.3 MGOe).
Keywords:condensed state physics  sintered NdFeB magnet  powder flowability  alignment degree  lubricant  remanent magnetization
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《材料研究学报》浏览原始摘要信息
点击此处可从《材料研究学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号