影响永磁铁氧体磁性能原因探讨[一].pdfVIP

工艺·技术·应用 影响永磁铁氧体磁性能原因探讨 1 1 2 3 吴建民 ，李和兴 ，金鸣林 ，万 遥 (1. 上海师范大学 生命与环境科学学院，上海 200234 ； 2. 上海应用技术学院，上海 200235 ； 3. 上海龙磁电子科技有限公司，上海 201100 ） 摘 要：锶铁氧体的磁性能与原材料成分、晶体粒径、取向度及烧结温度等因素有关。通过对不同厂家生 产的磁瓦进行剖析，发现日本磁瓦之所以磁性能优良，主要原因是日本样品晶粒的均匀性很好，烧结温度适中， γ -Fe O 杂相含量低。由此可知我们通过优化生产工艺，控制好γ -Fe O 杂相含量，获得合理的晶体结构，以生产 2 3 2 3 出高性能磁瓦。 关键词：锶铁氧体；晶粒取向度；磁性能 中图分类号：TM277+.5 文献标识码：B 文章编号：1001-3830(2008)05-0036-03 Discussion on Factors Affecting the Magnetic Properties of the Permanent Sr-Ferrites 1 1 2 3 WU Jian-min ，LI He-xing ，JIN Ming-lin ，WAN Yao 1. Life Environment Science College, Shanghai Normal University, Shanghai 200234, China; 2. Shanghai Institute of Technology, Shanghai 200235, China； 3. Shanghai Sinomag Electronic Tech.Co.,Ltd, Shanghai 201100, China Abstract ：The magnetic properties of hard Sr ferrite are closely related to the composition of raw materials, crystal size and the sintering temperature and so on. By analyzing the magnetic tiles made by different manufacturers, it is found that the better properties of Japanese tile, is mainly attributed to the high uniformity of the grain size, moderate temperature of sintering, and low content of γ -Fe O miscellaneous. So, high performance ferrite tile may be produced 2 3 by optimizing production technology and controlling low content of γ -Fe O miscellaneous and a reasonable crystal