Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

您目前所在的位置:首页 - 期刊简介 - 详细页面

中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第18卷    第3期    总第108期    2008年3月

[PDF全文下载]        

    

文章编号:1004-0609(2008)03-0483-06
强磁场下烧结MnZn铁氧体
傅小明,钟云波,任忠鸣,王 江,邓 康

(上海大学 上海市现代冶金与材料制备重点实验室,上海 200072)

摘 要:

将Fe2O3、MnO和ZnO粉末按摩尔比为52.8׃24.2׃23.0混合后压制成30 mm×5 mm×5 mm的长方条,然后在无磁场和8 T强磁场下进行烧结,对两种情况下烧结的MnZn铁氧体进行XRD、SEM和VSM等检测。结果表明:与无磁场下烧结的MnZn铁氧体相比,8 T强磁场下烧结的MnZn铁氧体的(511)晶面沿平行于磁场方向发生明显取向,微观形貌也显示明显的取向织构,且致密化程度提高;其磁性能也明显提高,特别是其相对磁导率提高约130%;对于强磁场下烧结的MnZn铁氧体,平行磁场方向上的饱和磁化强度较垂直磁场方向上的饱和磁化强度提高7.56%,而剩余磁化强度降低48.19%。

 

关键词: MnZn铁氧体;强磁场;烧结;取向

Sintering of MnZn ferrite in high static magnetic field
FU Xiao-ming, ZHONG Yun-bo, REN Zhong-ming, WANG Jiang, DENG Kang

Shanghai Key Laboratory of Modern Metallurgy and Material Processing, Shanghai University, Shanghai 200072, China

Abstract:The mixtures of Fe2O3, MnO and ZnO were sintered without or with 8 T static magnetic field, respectively. The sintered MnZn ferrite (MZF) samples in these two cases were characterized by XRD, SEM, VSM and etc. The results show that compared with MZF sintered without magnetic field, (511) plane of MZF sintered in 8 T static magnetic field is strongly oriented along the magnetic field direction. The oriented crystal texture appears in the sample sintered in 8 T static magnetic field, whose density is enhanced remarkably. The magnetic properties are increased. Especially, its relative magnetic permeability along the magnetic field direction is evaluated by about 130%. For MZF sintered in 8 T static magnetic field, the saturation magnetization along the magnetic field direction is increased by 7.56% compared with that along the vertical magnetic field direction, while its residual magnetization is reduced by 48.19%.

 

Key words: MnZn ferrite; high static magnetic field; sintering; orientation

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

主管:中国科学技术协会 主办:中国有色金属学会 承办:中南大学
湘ICP备09001153号 版权所有:《中国有色金属学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市岳麓山中南大学内 邮编:410083
电 话:0731-88876765,88877197,88830410   传真:0731-88877197   电子邮箱:f_ysxb@163.com