[1]王自敏 邓志刚.Ca永磁铁氧体的组成及微观结构与磁性研究[J].中国材料进展,2016,(09):046-50.[doi:10.7502/j.issn.1674-3962.2016.09.10]
　Wang Zimin,Deng Zhigang. Components of Ca Permanent Magnets and their Microstructures and Magnetic Properties[J].MATERIALS CHINA,2016,(09):046-50.[doi:10.7502/j.issn.1674-3962.2016.09.10]
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Ca永磁铁氧体的组成及微观结构与磁性研究
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中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
期数:
2016年第09期
页码:
046-50
栏目:
研究报告
出版日期:
2016-09-30

文章信息/Info

Title:
 Components of Ca Permanent Magnets and their Microstructures and Magnetic Properties
作者:
 王自敏1; 2 邓志刚2
 （1宜宾职业技术学院，四川 宜宾 644003
2自贡江阳磁材有限责任公司，四川 自贡643200）
Author(s):
 Wang Zimin 1 ;Deng Zhigang 2
 1.Yibin Vocational and Technical College, Yibin, Sichuan 644003
2.Zigong Joint-Mag Co., Ltd
关键词:
 ; Ca系永磁铁氧体; 矩形比; 磁性能; 固相反应
DOI:
10.7502/j.issn.1674-3962.2016.09.10
文献标志码:
A
摘要:
 用陶瓷工艺制备了Ca永磁铁氧体，用永磁铁氧体测量仪、振动样品磁强计、X射线衍射仪型、EDS以及扫描电子显微镜等设备仪器对Ca永磁铁氧体的物相、磁性能及断面形貌等进行了分析，探讨了Ca永磁铁氧体微观结构、主、辅配方及取向磁场等对磁性能的影响。实验表明：微量Ba元素的添加在一定程度上抑制晶粒生长的同时更有利于Ca铁氧体晶粒的均匀生长及取向度f的改善，从而明显改善了产品的磁性能，矩形比（Hk /HCJ）从89%提高到96%，M*值提高2.6%，达到6200以上；对Ca0.98-xLaxBa0.02Fe10.6-xCoxO19-δ，x=0.3时的预烧料细粉碎时添加0.2%的H3BO3、0.4%的SiO2，研磨之后的料浆在1150kA/m，即约3倍HCJ的磁场下成型更有利于Ca系永磁铁氧体磁参数的改善，Ca永磁铁氧体产品的典型磁参数：Br为452mT，HCJ为402kA/m。
Abstract:
The researchers prepared Ca permanent magnets by ceramics. Then they tested the products by the permanent ferrite meters and the vibrating sample magnetometer, etc. and observed the sample fracture surface by X-ray diffraction devices, EDS and SEM (scanning electron microscope).Finally, they analyzed the phase of the samples, magnetic properties and fracture morphology and also discussed the effects on the magnetic properties of the products concerning the microstructure, the main and auxiliary recipe and the orientation of the magnetic field. Experimental results show that the addition of Ba inhabits the grain growth and benefits the uniform grains of Ca ferrite and the orientation f. Hence the magnetic properties are significantly improved. The squareness ratio (Hk/HCJ) increases from 89% to 96%, and M* by 2.6%,reaching more than 6200. For Ca0.98-xLaxBa0.02Fe10.6-xCoxO19-δ，when 0.2% H3BO3 and 0.4% SiO2 ( x=0.3)are added into the grinding materials at1150kA/m, i.e. molded at 3 times HCJ magnetic field, it is more conducive to the parameter improvement of the Ca permanent magnets. The typical parameters of Ca permanent magnets are 452mT for Br and 402kA / m for HCJ.
更新日期/Last Update: 2016-09-21