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水基流延成型制備ni-cu-zn軟磁鐵氧體薄磁片及其磁學性.doc


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添加Bi2O3对水基流延成型制备NiCuZn软磁铁氧体薄磁片磁学性能的影响
马腾,熊兆贤收稿日期:2015-03-26 录用日期:2015-05-08
* 通信作者:******@xmu.
,翁章钊,徐文浩,冯瑶
(厦门大学材料学院,福建厦门 361005)
摘要:-xO4(x = 0,,,,,,)的铁氧体坯片。研究了不同Bi含量的NiCuZn铁氧体样品在1~ 200 MHz频率范围内的磁谱和频率在100 kHz下磁导率温度系数αμ,;结果表明,随着Bi含量的增多, MHz下的磁导率先升后降,截止频率先降后升;在x=,截止频率最小;且随着Bi含量增大,磁导率温度系数由正值转为负值,磁导率温度系数绝对值〡αμ〡先减小后增大;~,在960 °C的低温环境下烧结,保温3 h即可获得高磁导率和磁导率温度系数较小的NiCuZn铁氧体,可用做NFC铁氧体隔磁片。
关键词:水基流延成型;NFC铁氧体;温度稳定性;磁导率;低温烧结
中图分类号:TM 277+ 文献标志码: A
Influence of Bi2O3 Additive on ic Properties of NiCuZn Ferrite Films Prepared via Aqueous Tape casting Technology
MA Teng, XIONG Zhao-xian*, WENG Zhang-zhao, XU Wen-hao,
FENG Yao
(College of Materials ,Xiamen University, Xiamen 361005,China)
Abstract: Ferrite films with different Bi contents of -xO4(x=0, , , , , )were prepared via aqueous technology of tape casting . plex permeability spectra with different Bi contents were investigated under 1-200 MHz and the temperature coefficient of permeability under 100 kHz was studied. The results revealed that the initial permeability increased first and then decreased with the increasing of x under the frequency of MHz, which showed the contrary trend of the cut-off frequency; and the initial permeability reached the maximum value of ,but the cut-off frequency attained the minimum value of MHz when x was . The coefficient of initial permeability changed
from positive to negative, nevertheless, the absolute value of αμ decreased firstly and then increased. The low permeability temperature-coefficient and high permeability of -xO4 ferrite films were obtained with x ranging to and when being sintered at low temperature of 960 °C for 3 h, which turned out to be suitable for the application of NFC.
Key words: aqueous tape casting technology; NFC ferrite; temperature

水基流延成型制備ni-cu-zn軟磁鐵氧體薄磁片及其磁學性 来自淘豆网www.taodocs.com转载请标明出处.

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