SmCo5/Fe7Co3高温永磁复合材料的纳米相结构与磁性能

项目名称： SmCo5/Fe7Co3高温永磁复合材料的纳米相结构与磁性能

项目编号： No.51271070

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 一般工业技术

项目作者： 崔春翔

作者单位： 河北工业大学

项目金额： 80万元

中文摘要： 以不同纳米尺寸孔径的AAO膜为模板，采用电化学软硬相交替沉积法制备取向性好的高居里点的SmCo5/ Fe7Co3多层纳米线，脱去AAO模板，制成软硬两相层厚皆为10纳米左右，双相界面原子直接接触的纳米线，然后将SmCo5/ Fe7Co3多层双相纳米线制成趋近理论模型的复合磁粉。通过研究软硬双相的交替形核长大机制，从理论上阐明软硬磁双相纳米晶体实现理想平行取向、均匀、规则的生长机理；通过优化这种新型永磁材料的纳米相结构和界面微结构，使其符合双相纳米永磁材料的理论模型；通过研究变温条件下复合永磁体的磁晶各向异性随软硬磁双相纳米晶层厚度不同而变化的机理，揭示其纳米相结构与界面交换耦合作用的关系与规律，从而阐明新型纳米双相永磁体微结构优化对高温下硬磁相的各向异性常数和复合磁粉磁性能的影响机理，以解决目前双相纳米复合永磁体的高温磁性能普遍偏低的瓶颈科学问题，为研制新型高磁性能高温永磁体提供理论依据。

中文关键词： 纳米阵列模板；交替沉积；纳米线；高温磁性能；界面弹性交换耦合

英文摘要： Using the AAO membrane with different nanometer-sized aperture as a template, electrochemical alternating deposition with hard and soft phase is used to fabricate SmCo5 / Fe7Co3 multilayered nanowires with a high curie point and a good crystal orientation on the template, and then AAO template is taken off, so the nanowires with two-phase layer in about 10 nm thickness of each layer and direct atom contact on the duplex interfaces are carried out. Finally, the magnetic composite powders being close to theoretical model are prepared by SmCo5 / Fe7Co3 multi-layer duplex nanowires. Through the study on the alternating nucleation and growth mechanism of the hard and soft two-phase, we want to theoretically clarify the growth mechanism of hard and soft magnetic two-phase nanocrystalline with an ideal parallel orientation, uniform and formal features; by optimizing the nano-phase structure and interface microstructure of this new type of permanent magnet materials, it results in that the microstructure of SmCo5 / Fe7Co3 multi-layer duplex nanowires is closer to the theoretical model of two-phase nano-permanent magnetic materials. Through the study on the variation mechanism on the magneto-crystalline anisotropy of composite permanent magnet corresponding to thickness changes of the hard and soft magnetic two-phase nan

英文关键词： nanoarray AAO template；alternatively deposition；nanowires；magnetic properties at high temperature；interfacial elastic exchange coupling